-
Question 1
Incorrect
-
A 70-year-old man is experiencing excessive breast tissue growth and is worried about it. He has a medical history of dyspepsia, hypertension, and left ventricular systolic dysfunction, and has recently undergone treatment for prostate cancer. Which medication from his prescription list is the most likely cause of his symptoms?
Your Answer: Metoclopramide
Correct Answer: Goserelin
Explanation:The use of GnRH agonists (such as goserelin) for treating prostate cancer can lead to the development of gynaecomastia. This medication can also cause loss of libido and erectile dysfunction due to its mode of action. Bisoprolol does not have any known association with gynaecomastia. While metoclopramide can cause nipple discharge and hyperprolactinaemia, it is not linked to gynaecomastia. On the other hand, cimetidine (not omeprazole) is known to cause gynaecomastia.
Understanding Gynaecomastia: Causes and Drug Triggers
Gynaecomastia is a medical condition that occurs when males develop an abnormal amount of breast tissue. This condition is usually caused by an increased ratio of oestrogen to androgen. It is important to differentiate the causes of galactorrhoea, which is due to the actions of prolactin on breast tissue, from those of gynaecomastia.
There are several causes of gynaecomastia, including physiological changes that occur during puberty, syndromes with androgen deficiency such as Kallman’s and Klinefelter’s, testicular failure, liver disease, testicular cancer, ectopic tumour secretion, hyperthyroidism, and haemodialysis. Additionally, certain drugs can trigger gynaecomastia, with spironolactone being the most common drug cause. Other drugs that can cause gynaecomastia include cimetidine, digoxin, cannabis, finasteride, GnRH agonists like goserelin and buserelin, oestrogens, and anabolic steroids.
It is important to note that while drug-induced gynaecomastia is rare, there are still some drugs that can trigger this condition. Some of the very rare drug causes of gynaecomastia include tricyclics, isoniazid, calcium channel blockers, heroin, busulfan, and methyldopa. Understanding the causes and drug triggers of gynaecomastia can help individuals seek appropriate medical attention and treatment.
-
This question is part of the following fields:
- Pharmacology/Therapeutics
-
-
Question 2
Correct
-
A 76-year-old man comes to his General Practitioner with one-sided visual loss. During the examination, a relative afferent pupillary defect is observed. Fundoscopy reveals a 'cherry-red spot' with a red centre of the macula and a pale surrounding of the retina.
What is the most suitable next step in managing this patient, considering the probable diagnosis?Your Answer: Send patient to the Eye Hospital for immediate review by an Ophthalmologist
Explanation:Central Retinal-Artery Occlusion: An Ocular Emergency
Central retinal-artery occlusion (CRAO) is a serious condition that requires immediate attention from an ophthalmologist. It is diagnosed through a dilated eye examination that reveals a cherry-red spot in the center of the macula, surrounded by pale retina due to lack of blood flow. Other signs include segmentation of the blood column in the arteries and cattle-trucking.
CRAO is an ocular emergency because the retinal damage becomes irreversible with time, and urgent management is necessary to protect the other eye and the cardiovascular and cerebrovascular systems. The primary goal of management is to re-perfuse ischaemic tissue as quickly as possible and to institute secondary prevention early.
If giant-cell arteritis is suspected, immediate treatment is necessary, including intravenous steroids followed by oral steroids.
Referral under the 2-week-wait rule is necessary when there is a suspicion of cancer, but no signs of a tumor from history or fundoscopy findings.
It is crucial to refer the patient for urgent brain imaging and immediate review by an eye specialist. Starting the patient on topical antibiotics and anti-inflammatories would be inappropriate since there are no signs of an infection process.
-
This question is part of the following fields:
- Ophthalmology
-
-
Question 3
Correct
-
A 70-year-old man arrives at the emergency department with abrupt onset of numbness on the right side of his body, without any other accompanying symptoms. He has a medical history of uncontrolled hypertension and diabetes mellitus. A CT scan of his head was conducted, which revealed no signs of bleeding or tumors. The diagnosis is a lacunar stroke. Which area of the brain is impacted by a lacunar stroke?
Your Answer: The basal ganglia, thalamus and internal capsule
Explanation:The basal ganglia, thalamus, and internal capsule are common sites for lacunar strokes. Amaurosis fugax affects (1), ‘locked-in’ syndrome affects (2), Wallenberg syndrome affects (4), and lateral pontine syndrome affects (5).
When a stroke occurs, the location of the lesion in the brain can determine the specific effects on the body. Depending on which artery is affected, different symptoms may arise. For example, a stroke in the anterior cerebral artery can lead to contralateral hemiparesis and sensory loss, with the lower extremity being more affected than the upper. On the other hand, a stroke in the middle cerebral artery can cause contralateral hemiparesis and sensory loss, with the upper extremity being more affected than the lower, as well as contralateral homonymous hemianopia and aphasia.
If the stroke occurs in the posterior cerebral artery, the individual may experience contralateral homonymous hemianopia with macular sparing and visual agnosia. In the case of Weber’s syndrome, which involves branches of the posterior cerebral artery that supply the midbrain, the person may have an ipsilateral CN III palsy and contralateral weakness of the upper and lower extremities.
Other types of strokes include those affecting the posterior inferior cerebellar artery, which can lead to ipsilateral facial pain and temperature loss and contralateral limb/torso pain and temperature loss, as well as ataxia and nystagmus. A stroke in the anterior inferior cerebellar artery can cause similar symptoms to Wallenberg’s syndrome, but with the addition of ipsilateral facial paralysis and deafness.
Finally, lacunar strokes are small, localized strokes that often occur in individuals with hypertension. They typically present with isolated hemiparesis, hemisensory loss, or hemiparesis with limb ataxia, and commonly affect the basal ganglia, thalamus, and internal capsule.
-
This question is part of the following fields:
- Neurology
-
-
Question 4
Correct
-
A 28-year-old man with Crohn's disease visits his primary care physician complaining of discomfort in the area around his anus. He mentions the presence of malodorous pus when he cleans himself. During the examination, a draining opening is observed on his perineum. A digital rectal exam confirms the diagnosis of a perianal fistula. What imaging modality is the best option for this condition?
Your Answer: MRI pelvis
Explanation:When investigating suspected perianal fistulae in patients with Crohn’s disease, MRI is the preferred imaging modality. This is because an MRI can accurately map out the extent and track of the fistula, as well as identify any associated abscesses or other fistulas. As perianal fistulas are a soft tissue pathology, an MRI pelvis is the most effective way to visualize them. Barium enema is not reliable for imaging small structures like fistulas, while CT pelvis may potentially identify fistulas but is less sensitive and accurate than MRI. Endo-anal ultrasound may be used for some perianal fistulas, but given the likelihood of complex fistulas in Crohn’s disease, MRI is the preferred option. Additionally, MRI is preferable in adults of reproductive age to avoid unnecessary radiation exposure to the reproductive organs.
Managing Crohn’s Disease: Guidelines and Treatment Options
Crohn’s disease is a type of inflammatory bowel disease that can affect any part of the digestive tract. To manage this condition, the National Institute for Health and Care Excellence (NICE) has published guidelines that provide recommendations for inducing and maintaining remission, as well as treating complications. One of the most important steps in managing Crohn’s disease is to advise patients to quit smoking, as this can worsen the condition. Additionally, some medications, such as nonsteroidal anti-inflammatory drugs (NSAIDs) and the combined oral contraceptive pill, may increase the risk of relapse, although the evidence is not conclusive.
To induce remission, glucocorticoids are often used, either orally, topically, or intravenously. Budesonide is an alternative for some patients. Enteral feeding with an elemental diet may also be used, especially in young children or when there are concerns about the side effects of steroids. Second-line treatments for inducing remission include 5-ASA drugs like mesalazine, as well as azathioprine or mercaptopurine, which may be used in combination with other medications. Methotrexate is another option. Infliximab is useful for refractory disease and fistulating Crohn’s, and patients may continue on azathioprine or methotrexate.
To maintain remission, stopping smoking is a priority, and azathioprine or mercaptopurine is used first-line. TPMT activity should be assessed before starting these medications. Methotrexate is used second-line. Surgery may be necessary for around 80% of patients with Crohn’s disease, depending on the location and severity of the disease. Complications of Crohn’s disease include small bowel cancer, colorectal cancer, and osteoporosis. Perianal fistulae and abscesses require specific treatments, such as oral metronidazole, anti-TNF agents like infliximab, or a draining seton. By following these guidelines and treatment options, patients with Crohn’s disease can better manage their condition and improve their quality of life.
-
This question is part of the following fields:
- Gastroenterology/Nutrition
-
-
Question 5
Correct
-
A 35-year-old man who is generally healthy visits his doctor to discuss planning a second child. His main concern is that his first child has sickle cell anemia. Both he and his partner have had genetic testing and are both carriers of the sickle cell trait.
Which of the following best describes the likelihood of his next child having sickle cell anemia?Your Answer: 25%
Explanation:Understanding the Inheritance of Cystic Fibrosis
Cystic fibrosis (CF) is an autosomal-recessive condition that affects many individuals worldwide. To understand the inheritance of CF, it is important to know that a child inherits one copy of the gene from each parent. If both parents are carriers of the faulty gene, there is a 1 in 4 chance of their child being affected by the condition.
If the child inherits one normal and one abnormal gene, they become a carrier of CF. The chance of this happening is 50%. If the child inherits two normal genes, they will not be affected nor be a carrier of CF, and the chance of this happening is 25%. However, if the child inherits two copies of the faulty gene, they will be affected by the condition, and the chance of this happening is also 25%.
It is important to note that the fact that the first child has CF does not affect the risk to subsequent children. The risk remains the same for each child, as each child inherits a copy of the gene from each parent. Understanding the inheritance of CF can help individuals make informed decisions about family planning and genetic testing.
-
This question is part of the following fields:
- Genetics
-
-
Question 6
Correct
-
A patient with a history of depression at the age of 50 presents for review. What indicates an elevated risk of suicide?
Your Answer: History of arm cutting
Explanation:Arm cutting may be seen as attention-seeking or a way to release pain, but studies indicate that it increases the risk of suicide for those with a history of deliberate self harm. Employment is a protective factor.
Suicide Risk Factors and Protective Factors
Suicide risk assessment is a common practice in psychiatric care, with patients being stratified into high, medium, or low risk categories. However, there is a lack of evidence on the positive predictive value of individual risk factors. A review in the BMJ concluded that such assessments may not be useful in guiding decision-making, as 50% of suicides occur in patients deemed low risk. Nevertheless, certain factors have been associated with an increased risk of suicide, including male sex, history of deliberate self-harm, alcohol or drug misuse, mental illness, depression, schizophrenia, chronic disease, advancing age, unemployment or social isolation, and being unmarried, divorced, or widowed.
If a patient has attempted suicide, there are additional risk factors to consider, such as efforts to avoid discovery, planning, leaving a written note, final acts such as sorting out finances, and using a violent method. On the other hand, there are protective factors that can reduce the risk of suicide, such as family support, having children at home, and religious belief. It is important to consider both risk and protective factors when assessing suicide risk and developing a treatment plan.
-
This question is part of the following fields:
- Psychiatry
-
-
Question 7
Incorrect
-
A 28-year-old woman presents with a history of headache every day for the past three months. She describes that it is worse in the evening. There are no associated symptoms.
Which of the following is the most likely diagnosis?Your Answer: Brain tumour
Correct Answer: Tension headache
Explanation:Understanding Different Types of Headaches
Headaches are a common ailment that can be caused by a variety of factors. Here are some of the different types of headaches and their distinguishing characteristics:
1. Tension headache: This type of headache is often described as a tight, band-like pain across the forehead and is more common in females. It typically worsens towards the end of the day but does not interfere with daily activities. Chronic tension headaches occur at least 15 days of the month for at least three months.
2. Brain tumour: Headaches caused by space-occupying lesions tend to be worse in the morning and when bending forward. They may also be associated with vomiting.
3. Cluster headache: This type of headache is more common in men and presents with intense pain localized around one eye, which can last for a few minutes up to three hours. There may also be simultaneous lacrimation and nasal congestion. Symptoms occur every day or multiple times every day for a number of weeks, followed by a symptom-free period lasting months or even years.
4. Giant cell arteritis: This type of headache typically occurs in those aged over 50 years and is characterized by an abrupt onset and recurrent daily headache. Common symptoms include scalp pain/tenderness, jaw claudication, visual disturbances, fever, weight loss, and lethargy. A diagnosis of GCA requires three out of five specific criteria.
5. Migraine: Migraines can occur daily but are typically accompanied by associated features such as nausea or vomiting, photophobia, or phonophobia. The International Headache Society criteria for migraine without aura include at least five attacks fulfilling specific criteria.
Understanding the different types of headaches and their characteristics can help in proper diagnosis and treatment.
-
This question is part of the following fields:
- Neurology
-
-
Question 8
Correct
-
A 3-year-old boy is brought to the paediatric urology clinic due to recurrent urinary tract infections. A renal ultrasound revealed dilatation of the ureters. The boy's father remembers having a similar issue with a valve in his ureters during childhood, resulting in urine flowing back towards the kidneys. What is the most suitable test to assess the severity of the probable underlying cause?
Your Answer: Micturating cystography
Explanation:Vesicoureteral reflux (VUR) is a likely cause of recurrent urinary tract infections (UTIs) in children under 6 years old. The family history, age of the patient, and abnormal ultrasound findings suggest VUR as the underlying issue. To determine the severity of VUR, a voiding cystourethrogram (micturating cystography) is necessary. This test involves injecting dye into the bladder via a catheter and taking x-ray images while the child urinates. Early detection of VUR is crucial to prevent kidney scarring (reflux nephropathy).
Bladder ultrasound is not an appropriate method for grading VUR severity. While ultrasound imaging of the urinary tract, including the kidneys, can be useful, it cannot grade VUR severity.
A CT abdomen is not necessary and would expose the child to unnecessary radiation.
A dimercaptosuccinic acid (DMSA) scan can assess renal parenchymal defects resulting from VUR and is typically performed within six months of an acute infection in children with recurrent UTIs. However, it cannot grade the severity of VUR.
Understanding Vesicoureteric Reflux
Vesicoureteric reflux (VUR) is a condition where urine flows back from the bladder into the ureter and kidney. This is a common urinary tract abnormality in children and can lead to urinary tract infections (UTIs). In fact, around 30% of children who present with a UTI have VUR. It is important to investigate for VUR in children following a UTI as around 35% of children develop renal scarring.
The pathophysiology of VUR involves the ureters being displaced laterally, which causes a shortened intramural course of the ureter. This means that the vesicoureteric junction cannot function properly. VUR can present in different ways, such as hydronephrosis on ultrasound during the antenatal period, recurrent childhood UTIs, and reflux nephropathy, which is chronic pyelonephritis secondary to VUR. Renal scarring can also produce increased quantities of renin, which can cause hypertension.
To diagnose VUR, a micturating cystourethrogram is usually performed. A DMSA scan may also be done to check for renal scarring. VUR is graded based on the severity of the condition, with Grade I being the mildest and Grade V being the most severe.
Overall, understanding VUR is important in preventing complications such as UTIs and renal scarring. Early diagnosis and management can help improve outcomes for children with this condition.
-
This question is part of the following fields:
- Paediatrics
-
-
Question 9
Incorrect
-
A 45-year-old woman, who is a non-smoker, presents with back pain. A bone scan shows multiple lesions highly suggestive of metastases. Clinical examination is normal apart from unilateral axillary lymphadenopathy. Excision biopsy of an affected lymph node shows adenocarcinoma. Which of the following investigations should be prioritised to find the site of the primary?
Your Answer: Gastroscopy
Correct Answer: Mammography
Explanation:When a patient presents with metastatic bone disease from an unknown primary, it is important to identify the primary source in order to guide treatment and determine prognosis. Tumours that commonly metastasize to bone include those of the lungs, prostate, breast, kidney, and thyroid.
In cases where the patient has unilateral axillary lymphadenopathy, metastatic breast carcinoma is highly likely. Other potential causes of unilateral axillary lymphadenopathy include lymphoma, primary malignancy, melanoma, or metastases from non-breast primary malignancy.
While there are various investigations that can be performed, mammography should be the first examination of choice. If the mammogram is negative, other investigations may be pursued to identify alternative occult sites.
It is important to note that identifying the primary source is useful even in cases of metastatic disease, as it can guide treatment and provide insight into prognosis. Therefore, mammography plays a crucial role in the diagnosis of metastatic breast cancer.
-
This question is part of the following fields:
- Haematology/Oncology
-
-
Question 10
Incorrect
-
At what point in the childhood immunisation schedule is the Meningitis B vaccine administered?
Your Answer: 3 and 12 months, and 12-13 years
Correct Answer: 2, 4, and 12 months
Explanation:The most prevalent cause of meningococcal disease in children in the UK is currently Meningitis B. In 2015, the Meningitis B vaccination was added to the NHS routine childhood immunisation schedule. It is administered at 2, 4, and 12 months of age, in conjunction with other immunisations in the schedule. If given at a different time, doses must be spaced at least 2 months apart. For children over one year old, only two doses are necessary.
Meningitis B Vaccine Now Part of Routine NHS Immunisation
Children in the UK have been vaccinated against meningococcus serotypes A and C for many years, leaving meningococcal B as the most common cause of bacterial meningitis in the country. However, a new vaccine called Bexsero has been developed to combat this strain. Initially, the Joint Committee on Vaccination and Immunisation (JCVI) rejected the use of Bexsero due to a cost-benefit analysis. However, the decision was eventually reversed, and the vaccine has been added to the routine NHS immunisation schedule.
The vaccine is administered in three doses at 2 months, 4 months, and 12-13 months. Additionally, Bexsero will be available on the NHS for individuals at high risk of meningococcal disease, such as those with asplenia, splenic dysfunction, or complement disorder. This new vaccine is a significant step in protecting children and vulnerable individuals from meningitis B.
-
This question is part of the following fields:
- Paediatrics
-
-
Question 11
Correct
-
A 6-week-old baby is observed to have rocker-bottom feet, microcephaly and a small retracted chin. The mother is a refugee from Syria who gave birth recently but could not attend antenatal screening. What is the probable syndrome?
Your Answer: Edwards' syndrome
Explanation:Understanding Genetic Conditions: Trisomy 18 (Edwards’ Syndrome)
Trisomy 18, also known as Edwards’ syndrome, is a genetic condition that results in a range of physical and developmental abnormalities. Neonates with trisomy 18 often present with neonatal hypotonia, apnoea, and seizures, as well as severe psychomotor and growth retardation. Other common features include microcephaly, microphthalmia, microstomia, micrognathia, clenched fingers, and rocker-bottom feet. Over 90% of individuals with trisomy 18 have cardiac defects, commonly ventricular septal defect (VSD), as well as anomalies in most organ systems. Unfortunately, many fetuses will die in utero, and neonates born with trisomy 18 have a 40% chance of survival to 1 month.
It is important to note that an Edwards’ syndrome diagnosis should be made in the prenatal period. Low levels of AFP (α-fetoprotein), estradiol, and hCG (human chorionic gonadotrophin) on triple test biochemistry are suggestive, and the diagnosis can be confirmed on ultrasonography.
Other genetic conditions, such as Pierre-Robin syndrome, Down’s syndrome, Fragile X syndrome, and Noonan’s syndrome, have their own distinct features and should be differentiated from trisomy 18. Understanding these conditions and their unique characteristics can aid in early diagnosis and appropriate management.
-
This question is part of the following fields:
- Paediatrics
-
-
Question 12
Correct
-
As a doctor in the emergency department, you encounter a 42-year-old man who complains of new left leg tingling and weakness. He reports that three days ago he was independent and walking normally. The patient has a medical history of type 2 diabetes mellitus and takes insulin.
Upon examination, the patient has a heart rate of 121 beats per minute, a blood pressure of 101/72 mmHg, and a temperature of 38.3ºC. The right leg has 4/5 power throughout, while sensation is altered over the right anterior thigh and knee. The left leg has 4/5 power in hip flexion and extension, 3/5 power in knee flexion, knee extension, and ankle dorsiflexion, and 0/5 power in great toe extension and plantarflexion. Sensation is altered on the left over the thigh and knee, but absent to both light touch and pin prick in the left foot.
What is the most likely diagnosis for this patient?Your Answer: Lumbar epidural abscess
Explanation:The patient is displaying signs of sepsis and a developing neurological deficit in their lower limbs, which could indicate the presence of an epidural abscess. This is particularly likely given the patient’s history of diabetes, which is a known risk factor for this condition. While a diabetic foot can also cause neurological deficits and sepsis, the distribution of symptoms would be different and not affect the proximal limb on the opposite side. Discitis with a pathological fracture is also a possibility, but the absence of pain makes this less likely. Intracranial pathology is unlikely as the neurological deficit is confined to the lower limbs and there are no other systemic neurological symptoms present.
Understanding Discitis: Causes, Symptoms, Diagnosis, and Treatment
Discitis is a condition characterized by an infection in the intervertebral disc space, which can lead to serious complications such as sepsis or an epidural abscess. The most common cause of discitis is bacterial, with Staphylococcus aureus being the most frequent culprit. However, it can also be caused by viral or aseptic factors. The symptoms of discitis include back pain, pyrexia, rigors, and sepsis. In some cases, neurological features such as changing lower limb neurology may occur if an epidural abscess develops.
To diagnose discitis, imaging tests such as MRI are used due to their high sensitivity. A CT-guided biopsy may also be required to guide antimicrobial treatment. The standard therapy for discitis involves six to eight weeks of intravenous antibiotic therapy. The choice of antibiotic depends on various factors, with the most important being the identification of the organism through a positive culture, such as a blood culture or CT-guided biopsy.
Complications of discitis include sepsis and epidural abscess. Therefore, it is essential to assess the patient for endocarditis, which can be done through transthoracic echo or transesophageal echo. Discitis is usually due to haematogenous seeding of the vertebrae, which implies that the patient has had a bacteraemia, and seeding could have occurred elsewhere. Understanding the causes, symptoms, diagnosis, and treatment of discitis is crucial in managing this condition and preventing its complications.
-
This question is part of the following fields:
- Musculoskeletal
-
-
Question 13
Correct
-
A 50-year-old known alcoholic presents to the Emergency Department with disorientation. Upon examination, there is gross distension of the abdomen, shifting dullness, pitting edema to the mid-thigh, and a temperature of 38ºC. What is the probable diagnosis?
Your Answer: Spontaneous bacterial peritonitis
Explanation:The probable diagnosis in this case is spontaneous bacterial peritonitis, as indicated by the presence of fever and absence of diarrhoea. The patient’s history of chronic alcohol abuse and diffuse oedema also suggests liver failure, which increases the risk of developing spontaneous bacterial peritonitis.
Understanding Spontaneous Bacterial Peritonitis
Spontaneous bacterial peritonitis (SBP) is a type of peritonitis that typically affects individuals with ascites caused by liver cirrhosis. The condition is characterized by symptoms such as abdominal pain, fever, and ascites. Diagnosis is usually made through paracentesis, which involves analyzing the ascitic fluid for a neutrophil count of over 250 cells/ul. The most common organism found on ascitic fluid culture is E. coli.
Management of SBP typically involves the administration of intravenous cefotaxime. Antibiotic prophylaxis is also recommended for patients with ascites who have previously experienced an episode of SBP or have a fluid protein level of less than 15 g/l and a Child-Pugh score of at least 9 or hepatorenal syndrome. NICE recommends prophylactic oral ciprofloxacin or norfloxacin until the ascites has resolved.
Alcoholic liver disease is a significant predictor of poor prognosis in SBP. Understanding the symptoms, diagnosis, and management of SBP is crucial for healthcare professionals to provide appropriate care and improve patient outcomes.
-
This question is part of the following fields:
- Gastroenterology/Nutrition
-
-
Question 14
Incorrect
-
A 5-year-old girl is brought to the emergency room by her father. She has been lethargic and feverish for the past 2 hours. While waiting to be seen, she becomes unconscious. A physician performs an urgent evaluation while the nurse contacts 911. The child is not breathing, so 5 rescue breaths are administered. As you enter the room, the physician cannot detect a pulse in the brachial or carotid artery. What is the best course of action?
Your Answer: Start chest compressions/ventilations at a ratio of 30:2
Correct Answer: Start chest compressions/ventilations at a ratio of 15:2
Explanation:The chest compressions to ventilations ratio should be 15:2 when two trained staff members are present.
Paediatric Basic Life Support Guidelines
Paediatric basic life support guidelines were updated in 2015 by the Resuscitation Council. Lay rescuers should use a compression:ventilation ratio of 30:2 for children under 1 year and between 1 year and puberty, a child is defined. If there are two or more rescuers, a ratio of 15:2 should be used.
The algorithm for paediatric basic life support starts with checking if the child is unresponsive and shouting for help. The airway should be opened, and breathing should be checked by looking, listening, and feeling for breaths. If the child is not breathing, five rescue breaths should be given, and signs of circulation should be checked.
For infants, the brachial or femoral pulse should be used, while children should use the femoral pulse. Chest compressions should be performed at a ratio of 15:2, with a rate of 100-120 compressions per minute for both infants and children. The depth of compressions should be at least one-third of the anterior-posterior dimension of the chest, which is approximately 4 cm for an infant and 5 cm for a child.
In children, the lower half of the sternum should be compressed, while in infants, a two-thumb encircling technique should be used for chest compressions. These guidelines are crucial for anyone who may need to perform basic life support on a child, and it is essential to follow them carefully to ensure the best possible outcome.
-
This question is part of the following fields:
- Paediatrics
-
-
Question 15
Incorrect
-
A 47-year-old woman presents with a lump in the upper anterior triangle of her neck. She reports that it has been present for a few weeks and only started to bother her after her friend pointed it out and asked what it was. She denies any other symptoms such as weight loss or fevers. She recalls her mother having a similar swelling removed, but does not remember the diagnosis.
Upon examination, there is a small, smooth, nontender, mobile lump. The skin overlying the lump appears normal in color and temperature. The lump does not move on swallowing or tongue protrusion, and the skin cannot be moved over the top of the lump. What is the most likely diagnosis?Your Answer: Lipoma
Correct Answer: Sebaceous cyst
Explanation:Differentiating between lumps and bumps: A guide to common masses
When it comes to lumps and bumps on the body, it can be difficult to determine what they are and whether they require medical attention. Here are some common types of masses and their characteristics to help differentiate between them:
Sebaceous cysts: These small, smooth lumps are caused by a blocked hair follicle and have a central punctum. They are attached to the skin and may develop a horn. If infected, they can become tender and erythematous.
Lipomas: These deep masses are typically soft, doughy, and mobile. An ultrasound or biopsy may be needed to rule out sarcoma or liposarcoma.
Sternocleidomastoid tumors: This congenital lump appears within the first few weeks of life and is located beneath the sternocleidomastoid muscle. It restricts contralateral head movement.
Thyroid carcinoma: A hard, firm, non-tender mass close to the midline that moves up with swallowing may indicate thyroid cancer.
Thyroid goitre: A smooth or multi-nodular enlargement close to the midline that moves up with swallowing may indicate a thyroid goitre. Symptoms associated with thyroid diseases may also be present.
Knowing the characteristics of these common masses can help individuals determine when to seek medical attention.
-
This question is part of the following fields:
- ENT
-
-
Question 16
Correct
-
A 35-year-old Jewish woman has been diagnosed with breast cancer and found to be BRCA1-positive. What type of cancer is she most susceptible to developing?
Your Answer: Ovarian cancer
Explanation:BRCA-1 and BRCA-2 Mutations and Their Association with Cancer
BRCA-1 and BRCA-2 are tumour suppressor genes that play a crucial role in repairing damaged DNA and preventing uncontrolled cell division. Mutations in these genes have been linked to an increased risk of developing various types of cancer, including breast, ovarian, prostate, pancreatic, and colorectal cancers. Ashkenazi Jews have a higher incidence of BRCA mutations, and women with a family history of breast cancer can be tested for these mutations. The risk of developing breast cancer is high for women with abnormal BRCA-1 or -2, but the risk for ovarian cancer is lower. There is currently no association between BRCA-1 mutations and cervical, endometrial, gastric, or lung cancer.
-
This question is part of the following fields:
- Genetics
-
-
Question 17
Correct
-
A 26-year-old woman presents with swelling and pain in one calf. Upon Doppler ultrasound scan, an unprovoked DVT is discovered. She expresses a strong desire to start a family with her partner within the next year. Which medication would be the most appropriate choice?
Your Answer: Low molecular weight heparin
Explanation:Warfarin is not recommended for treating VTE in pregnancy due to its teratogenic effects. LMWH is the first-line treatment with below-knee compression stockings as an adjunct. Aspirin is not a suitable treatment for VTE.
Warfarin is an oral anticoagulant used to manage venous thromboembolism and reduce stroke risk in patients with atrial fibrillation. It inhibits epoxide reductase, preventing the reduction of vitamin K and the carboxylation of clotting factors. Warfarin is monitored using the INR and may take several days to achieve a stable level. Factors that may potentiate warfarin include liver disease, P450 enzyme inhibitors, cranberry juice, and NSAIDs. Side effects include haemorrhage, teratogenicity, skin necrosis, and purple toes.
-
This question is part of the following fields:
- Haematology/Oncology
-
-
Question 18
Correct
-
An 85-year-old woman and her daughter visit your clinic to inquire about the need for bone protection medication. The patient has a medical history of a fractured neck of femur 12 months ago, chronic kidney disease stage IV, hypertension, and ischaemic heart disease. She was prescribed alendronic acid after her fracture, but it was discontinued six months ago due to reflux issues. Risedronate was also not tolerated due to the same reason. Her DEXA scan after the fracture revealed a T score of -4.2. What is the most appropriate course of action?
Your Answer: Refer for consideration of denosumab
Explanation:The situation is complex as the patient requires bone protection due to her low T score and previous hip fracture. However, bisphosphonates are not suitable for her as they are contraindicated in patients with an eGFR below 35 mL/minute/1.73m(2), which she has due to her stage IV chronic kidney disease. Therefore, reintroducing alendronate or using IV zoledronate infusion is not an option. Repeating her DEXA scan at this point would not provide any additional information. While calcium and vitamin D supplementation should continue, they are not sufficient for her bone protection needs. The best option is denosumab, which would require administration in a secondary care setting and close monitoring of her calcium levels due to her renal disease.
The NICE guidelines for managing osteoporosis in postmenopausal women include offering vitamin D and calcium supplementation, with alendronate being the first-line treatment. If a patient cannot tolerate alendronate, risedronate or etidronate may be given as second-line drugs, with strontium ranelate or raloxifene as options if those cannot be taken. Treatment criteria for patients not taking alendronate are based on age, T-score, and risk factors. Bisphosphonates have been shown to reduce the risk of fractures, with alendronate and risedronate being superior to etidronate in preventing hip fractures. Other treatments include selective estrogen receptor modulators, strontium ranelate, denosumab, teriparatide, and hormone replacement therapy. Hip protectors and falls risk assessment may also be considered in management.
-
This question is part of the following fields:
- Musculoskeletal
-
-
Question 19
Correct
-
A 30-year-old man presents with fatigue, joint pain, and abnormal liver function tests. After investigation, he is diagnosed with hereditary hemochromatosis. His wife undergoes genetic testing and is found to not carry the disease. What is the likelihood that their child will develop hemochromatosis?
Your Answer: 0%
Explanation:Understanding Haemochromatosis: Symptoms, Causes, and Complications
Haemochromatosis is a genetic disorder that affects iron absorption and metabolism, leading to the accumulation of iron in the body. It is caused by mutations in the HFE gene on both copies of chromosome 6. This disorder is more common in people of European descent, with a prevalence of 1 in 200.
In the early stages of haemochromatosis, symptoms are often non-specific, such as fatigue and joint pain. As the disease progresses, patients may develop bronze skin pigmentation, diabetes mellitus, liver disease, cardiac failure, hypogonadism, and arthritis.
Treatment for haemochromatosis involves regular phlebotomy to remove excess iron from the body. Reversible complications of haemochromatosis include cardiomyopathy, skin pigmentation, liver cirrhosis, diabetes mellitus, hypogonadotrophic hypogonadism, and arthropathy. However, irreversible complications include cirrhosis, which can lead to liver failure and other serious health problems.
In conclusion, haemochromatosis is a genetic disorder that affects iron metabolism and can lead to serious health complications if left untreated. Early diagnosis and treatment can help prevent irreversible damage and improve quality of life for affected individuals.
-
This question is part of the following fields:
- Haematology/Oncology
-
-
Question 20
Correct
-
You are conducting a medication review on an 80-year-old man who is taking aspirin, verapamil, allopurinol, and co-codamol. Which medication should be avoided if prescribed concurrently with the current medications?
Your Answer: Atenolol
Explanation:The combination of beta-blockers and verapamil has the potential to cause severe bradycardia and asystole.
Beta-blockers are a class of drugs that are primarily used to manage cardiovascular disorders. They have a wide range of indications, including angina, post-myocardial infarction, heart failure, arrhythmias, hypertension, thyrotoxicosis, migraine prophylaxis, and anxiety. Beta-blockers were previously avoided in heart failure, but recent evidence suggests that certain beta-blockers can improve both symptoms and mortality. They have also replaced digoxin as the rate-control drug of choice in atrial fibrillation. However, their role in reducing stroke and myocardial infarction has diminished in recent years due to a lack of evidence. Examples of beta-blockers include atenolol and propranolol, which was one of the first beta-blockers to be developed and is lipid soluble, allowing it to cross the blood-brain barrier.
Like all drugs, beta-blockers have side-effects, including bronchospasm, cold peripheries, fatigue, sleep disturbances (including nightmares), and erectile dysfunction. They are contraindicated in uncontrolled heart failure, asthma, sick sinus syndrome, and concurrent use with verapamil, which may precipitate severe bradycardia.
-
This question is part of the following fields:
- Pharmacology/Therapeutics
-
-
Question 21
Correct
-
An 80-year-old woman is admitted with acute confusion caused by a urinary tract infection. Despite treatment with antibiotics, environmental changes, and reassurance, she continues to be agitated. You are contemplating prescribing haloperidol. What is one condition that may be significantly exacerbated by the use of haloperidol?
Your Answer: Parkinson's disease
Explanation:If possible, antipsychotics should be avoided as they can exacerbate Parkinson’s disease symptoms. Instead, a low dose of oral lorazepam may be considered as an alternative.
Acute confusional state, also known as delirium or acute organic brain syndrome, is a condition that affects up to 30% of elderly patients admitted to hospital. It is more common in patients over the age of 65, those with a background of dementia, significant injury, frailty or multimorbidity, and those taking multiple medications. The condition is often triggered by a combination of factors, such as infection, metabolic imbalances, change of environment, and underlying medical conditions.
The symptoms of acute confusional state can vary widely, but may include memory disturbances, agitation or withdrawal, disorientation, mood changes, visual hallucinations, disturbed sleep, and poor attention. Treatment involves identifying and addressing the underlying cause, modifying the patient’s environment, and using sedatives such as haloperidol or olanzapine. However, managing the condition can be challenging in patients with Parkinson’s disease, as antipsychotics can worsen Parkinsonian symptoms. In such cases, careful reduction of Parkinson medication may be helpful, and atypical antipsychotics such as quetiapine and clozapine may be preferred for urgent treatment.
Overall, acute confusional state is a complex condition that requires careful management and individualized treatment. By addressing the underlying causes and providing appropriate sedation, healthcare professionals can help patients recover from this condition and improve their overall quality of life.
-
This question is part of the following fields:
- Neurology
-
-
Question 22
Incorrect
-
A 58-year-old individual is rushed to the Emergency Department via ambulance, experiencing intense chest pain, difficulty breathing, and excessive sweating. The paramedics conducted an ECG on the scene, revealing ST depression in V1-V3 with tall, wide R waves and upward T waves. What should be the next appropriate step to take?
Your Answer: Give calcium gluconate IV
Correct Answer: Record a posterior ECG
Explanation:To confirm posterior infarction, a posterior ECG should be recorded when ST elevation and Q waves are present in posterior leads (V7-9). In this case, the patient presented with symptoms suggestive of myocardial infarction and the ECG showed changes that indicated the need for a posterior ECG. This involves placing leads V4-V6 on the patient’s back to make leads V7-V9. ST-elevation and Q waves in these leads confirm posterior infarction, and the patient should be transferred for primary percutaneous coronary intervention as soon as possible. It is important to have a high index of suspicion for posterior MIs and a low threshold for getting a posterior ECG.
Giving IV potassium replacement or calcium gluconate IV would be incorrect in this case. These treatments are used for hypokalaemia and severe hyperkalaemia, respectively, and are not the most likely diagnoses. Ibuprofen and colchicine would be appropriate for pericarditis, which presents with chest pain that is worse on lying flat and has characteristic ECG changes. However, the clinical picture and ECG changes in this case are more consistent with ACS.
A CT aortogram is used to investigate for aortic dissection, which can present with severe chest pain, breathlessness, and sweating. However, it would be best to record a posterior ECG to investigate for posterior MI prior to investigating for an aortic dissection due to the classic features of ACS in the history.
Anteroseptal changes in V1-V4 indicate involvement of the left anterior descending artery. Inferior changes in II, III, and aVF suggest the right coronary artery is affected. Anterolateral changes in V1-6, I, and aVL indicate the proximal left anterior descending artery is involved. Lateral changes in I, aVL, and possibly V5-6 suggest the left circumflex artery is affected. Posterior changes in V1-3 may indicate a posterior infarction, which is confirmed by ST elevation and Q waves in posterior leads (V7-9). This type of infarction is usually caused by the left circumflex artery, but can also be caused by the right coronary artery. Reciprocal changes of STEMI are typically seen as horizontal ST depression, tall and broad R waves, upright T waves, and a dominant R wave in V2. It is important to note that a new left bundle branch block (LBBB) may indicate acute coronary syndrome.
Overall, understanding the correlation between ECG changes and coronary artery territories is crucial in diagnosing acute coronary syndrome. By identifying the specific changes in the ECG, medical professionals can determine which artery is affected and provide appropriate treatment. Additionally, recognizing the reciprocal changes of STEMI and the significance of a new LBBB can aid in making an accurate diagnosis.
-
This question is part of the following fields:
- Cardiovascular
-
-
Question 23
Correct
-
A 42-year-old female presents to her primary care physician with a 2-month history of progressive fatigue. She has a medical history of type-1 diabetes mellitus. Her doctor orders a full blood count, which reveals a low Hb and high mean cell volume. The platelet and WBC counts are within normal limits. Which antibody test should be performed to assist in the diagnosis?
Your Answer: Intrinsic-factor antibodies
Explanation:When investigating vitamin B12 deficiency, intrinsic factor antibodies are more useful than gastric parietal cell antibodies due to the low specificity of the latter. Megaloblastic anaemia, characterized by low haemoglobin and raised mean cell volume, can be caused by B12 or folate deficiency and may indicate pernicious anaemia, an autoimmune condition that impairs B12 uptake. Intrinsic factor antibodies are more specific for pernicious anaemia and are commonly used to confirm the diagnosis along with a blood test. Anti-histone antibodies are involved in drug-induced lupus caused by certain drugs. Anti-TTG antibodies are used to screen for coeliac disease, which can cause microcytic anaemia due to iron deficiency from malabsorption. While gastric parietal cell antibodies are linked to pernicious anaemia, their low specificity makes them less reliable for diagnosis compared to intrinsic factor antibodies.
Understanding Pernicious Anaemia
Pernicious anaemia is a condition that results in vitamin B12 deficiency due to an autoimmune disorder affecting the gastric mucosa. The term pernicious means causing harm in a gradual or subtle way, and this is reflected in the often subtle symptoms and delayed diagnosis of the condition. While pernicious anaemia is the most common cause of vitamin B12 deficiency, other causes include atrophic gastritis, gastrectomy, and malnutrition.
The pathophysiology of pernicious anaemia involves antibodies to intrinsic factor and/or gastric parietal cells. These antibodies can bind to intrinsic factor, blocking the vitamin B12 binding site, or reduce acid production and cause atrophic gastritis. This leads to reduced intrinsic factor production and reduced vitamin B12 absorption, which can result in megaloblastic anaemia and neuropathy.
Risk factors for pernicious anaemia include being female, middle to old age, and having other autoimmune disorders such as thyroid disease, type 1 diabetes mellitus, Addison’s, rheumatoid arthritis, and vitiligo. It is also more common in individuals with blood group A.
Symptoms of pernicious anaemia include anaemia features such as lethargy, pallor, and dyspnoea, as well as neurological features such as peripheral neuropathy and subacute combined degeneration of the spinal cord. Neuropsychiatric features such as memory loss, poor concentration, confusion, depression, and irritability may also be present, along with mild jaundice and glossitis.
Diagnosis of pernicious anaemia involves a full blood count, vitamin B12 and folate levels, and testing for antibodies such as anti intrinsic factor antibodies and anti gastric parietal cell antibodies. Treatment involves vitamin B12 replacement, usually given intramuscularly, and folic acid supplementation may also be required. Complications of pernicious anaemia include an increased risk of gastric cancer.
-
This question is part of the following fields:
- Haematology/Oncology
-
-
Question 24
Correct
-
A 50-year-old female with multiple sclerosis reports experiencing tingling in her hands when she flexes her neck. What type of symptom is this?
Your Answer: Lhermitte's sign
Explanation:Lhermitte’s sign is a well-known symptom that suggests the presence of an underlying condition in the cervical cord’s dorsal column nuclei. This sign is also observed in cases of subacute combined degeneration of the cord and cervical stenosis.
Multiple Sclerosis: Common Features and Diagnostic Criteria
Multiple sclerosis (MS) is a disease that can present with various non-specific features, such as significant lethargy in around 75% of patients. Diagnosis of MS can be made based on two or more relapses and either objective clinical evidence of two or more lesions or objective clinical evidence of one lesion together with reasonable historical evidence of a previous relapse.
MS can affect different parts of the body, leading to a range of symptoms. Visual symptoms are common, with optic neuritis being a frequent presenting feature. Other visual symptoms include optic atrophy, Uhthoff’s phenomenon (worsening of vision following a rise in body temperature), and internuclear ophthalmoplegia. Sensory symptoms may include pins and needles, numbness, trigeminal neuralgia, and Lhermitte’s syndrome (paraesthesiae in limbs on neck flexion). Motor symptoms may include spastic weakness, which is most commonly seen in the legs. Cerebellar symptoms such as ataxia and tremor may also occur.
In addition to these symptoms, MS can also cause urinary incontinence, sexual dysfunction, and intellectual deterioration. It is important to note that not all patients with MS will experience all of these symptoms, and the severity and frequency of symptoms can vary widely between individuals.
-
This question is part of the following fields:
- Neurology
-
-
Question 25
Correct
-
A 24-year-old man presents to his GP with right-sided facial weakness. He complains of weakness on the right side of his face, especially when smiling or chewing. He also reports occasional twitching of his right cheek, which started 3 days ago after a flu-like illness. However, he notes that it is already starting to improve.
During examination, the GP observes mild impairment of the facial muscles on the entire right side of the patient's face, including his forehead. Otoscopy is normal, and examination of the eye is unremarkable. The rest of the cranial nerve exam and upper limb neurological exam is normal.
What is the recommended management for this likely diagnosis?Your Answer: Oral prednisolone and artificial tears
Explanation:Patients with Bell’s palsy should receive oral prednisolone within 72 hours of onset, regardless of the severity of their symptoms or any improvement since onset. This is important to differentiate Bell’s palsy from other conditions such as cerebral events and Ramsay-Hunt syndrome. Eye protection with lid taping or lubricating eye drops should also be considered. Therefore, the correct answer is oral prednisolone and artificial tears. Oral aciclovir alone is not sufficient as it does not provide steroids or eye protection. Reassurance only and advice to return if symptoms persist after 2 weeks is not appropriate as treatment should be offered within the 72-hour window. Urgent referral to ENT is not necessary as the diagnosis can be made and managed in primary care, but non-urgent referral may be necessary in severe or prolonged cases or where the diagnosis is unclear.
Understanding Bell’s Palsy
Bell’s palsy is a sudden, one-sided facial nerve paralysis of unknown cause. It is more common in individuals aged 20-40 years and pregnant women. The condition is characterized by lower motor neuron facial nerve palsy, which affects the forehead. Unlike upper motor neuron lesions, the upper face is spared. Patients may also experience post-auricular pain, altered taste, dry eyes, and hyperacusis.
The management of Bell’s palsy has been a subject of debate. However, it is now widely accepted that all patients should receive oral prednisolone within 72 hours of onset. The addition of antiviral medications is still a matter of discussion, but it may be beneficial for severe facial palsy. Eye care is also crucial to prevent exposure keratopathy, and patients should be prescribed artificial tears and eye lubricants. If they are unable to close their eyes at bedtime, they should tape them closed using microporous tape.
If the paralysis shows no sign of improvement after three weeks, an urgent referral to ENT is necessary. Patients with long-standing weakness may require a referral to plastic surgery. The prognosis for Bell’s palsy is generally good, with most patients making a full recovery within 3-4 months. However, untreated patients may experience permanent moderate to severe weakness in around 15% of cases.
-
This question is part of the following fields:
- Neurology
-
-
Question 26
Correct
-
A 2-year-old girl is brought to the GP by her mother due to a new rash. The mother is worried as the rash appeared suddenly just 1 day ago. The child had a cold with a high fever 3 weeks ago, but has since recovered. Apart from that, the child is healthy and active.
During the examination, an erythematous rash is observed on the child's trunk and limbs. The rash does not seem to be causing any itching and disappears when pressure is applied.
What is the most probable diagnosis?Your Answer: Roseola infantum
Explanation:What is the classical history of roseola infantum and how does it differ from other childhood rashes?
Roseola infantum is a common viral illness that typically affects children between 6 months and 2 years of age. It is characterized by a high fever that is followed 1-2 weeks later by an erythematous rash across the trunk and limbs. Febrile seizures are also common with this illness.
Measles, on the other hand, presents with an erythematous rash that starts behind the ears and spreads to the rest of the body. It is associated with fever, conjunctivitis, coryzal symptoms, and white koplik spots on the inside of the mouth.
Parvovirus B19, also known as slapped cheek disease, is characterized by a rash that first appears on the cheeks before spreading to the trunk and arms. It is usually preceded by 2-5 days of mild fever and non-specific viral symptoms.
Rubella presents with an erythematous rash that starts on the face and spreads to the rest of the body. It is associated with mild fever, sore throat, and lymphadenopathy.
Understanding Roseola Infantum
Roseola infantum, also known as exanthem subitum or sixth disease, is a common illness that affects infants and is caused by the human herpes virus 6 (HHV6). This disease has an incubation period of 5-15 days and is typically seen in children aged 6 months to 2 years. The most common symptoms of roseola infantum include a high fever that lasts for a few days, followed by a maculopapular rash. Other symptoms may include Nagayama spots, which are papular enanthems on the uvula and soft palate, as well as cough and diarrhea.
In some cases, febrile convulsions may occur in around 10-15% of children with roseola infantum. While this can be concerning for parents, it is important to note that this is a common occurrence and typically resolves on its own. Additionally, HHV6 infection can lead to other possible consequences such as aseptic meningitis and hepatitis.
It is important to note that school exclusion is not necessary for children with roseola infantum. While this illness can be uncomfortable for infants, it is typically not serious and resolves on its own within a few days.
-
This question is part of the following fields:
- Paediatrics
-
-
Question 27
Correct
-
A 30-year-old woman attends a routine cervical smear test and is noted to have extensive scarring of her vulva. On further questioning, she reports several visits to the Sexual Health Clinic for recurrent episodes of painful vulval ulceration.
She has had several attendances at the dentist and General Practitioner with recurrent painful mouth ulcers. She has been referred to a dermatologist to investigate a painful nodular rash which developed on her shins several weeks ago but has since resolved. She was recently discharged from the Eye Clinic following treatment for an acutely painful red eye.
Which of the following is the most likely diagnosis?
Select ONE option only.Your Answer: Behçet’s disease
Explanation:Behçet’s disease is a rare autoimmune condition that causes painful recurrent mouth and genital ulcers leading to scarring. Diagnosis is often delayed due to the absence of a definitive diagnostic test. This patient has had a rash associated with Behçet’s disease and an episode of acute red eye, which may have been anterior uveitis, another symptom of the condition. Herpes simplex infection, Crohn’s disease, coeliac disease, and lichen planus are all conditions that can cause similar symptoms but can be ruled out based on the patient’s medical history and physical examination.
-
This question is part of the following fields:
- Musculoskeletal
-
-
Question 28
Correct
-
A 7-year-old girl is diagnosed with nephrotic syndrome and a presumptive diagnosis of minimal change glomerulonephritis is made. What would be the most suitable course of treatment?
Your Answer: Prednisolone
Explanation:A renal biopsy should only be considered if the response to steroids is inadequate.
Minimal change disease is a condition that typically presents as nephrotic syndrome, with children accounting for 75% of cases and adults accounting for 25%. While most cases are idiopathic, around 10-20% have a known cause, such as certain drugs, Hodgkin’s lymphoma, thymoma, or infectious mononucleosis. The pathophysiology of the disease involves T-cell and cytokine-mediated damage to the glomerular basement membrane, resulting in polyanion loss and reduced electrostatic charge, which increases glomerular permeability to serum albumin. The disease is characterized by nephrotic syndrome, normotension (hypertension is rare), and highly selective proteinuria, with only intermediate-sized proteins such as albumin and transferrin leaking through the glomerulus. Renal biopsy shows normal glomeruli on light microscopy, but electron microscopy reveals fusion of podocytes and effacement of foot processes.
Management of minimal change disease typically involves oral corticosteroids, which are effective in 80% of cases. For steroid-resistant cases, cyclophosphamide is the next step. The prognosis for the disease is generally good, although relapse is common. Approximately one-third of patients have just one episode, one-third have infrequent relapses, and one-third have frequent relapses that stop before adulthood.
-
This question is part of the following fields:
- Renal Medicine/Urology
-
-
Question 29
Correct
-
A 50-year-old man with end-stage renal failure is scheduled for a renal transplant and is concerned about the potential increased risk of cancer. Can you provide information on which type of cancer he may be most susceptible to after the transplant?
Your Answer: Squamous cell carcinoma of the skin
Explanation:After receiving a transplant, a significant number of patients develop cancer within 20 years. This is caused by the medication given to prevent rejection, which suppresses the immune system. Kidney transplant recipients are at a higher risk of developing skin cancer, particularly squamous cell carcinoma, as well as lymphoma and cervical cancer.
Immunosuppression in Renal Transplant: Medications and Monitoring
Renal transplant patients require immunosuppressive medications to prevent rejection of the transplanted kidney. The initial regime usually includes ciclosporin or tacrolimus with a monoclonal antibody. The maintenance regime involves the same medications with mycophenolate mofetil or sirolimus. Steroids may be added if the patient experiences more than one steroid-responsive acute rejection episode.
Ciclosporin inhibits calcineurin, a phosphatase involved in T cell activation. Tacrolimus has a lower incidence of acute rejection compared to ciclosporin and causes less hypertension and hyperlipidaemia. However, it has a high incidence of impaired glucose tolerance and diabetes. Mycophenolate mofetil blocks purine synthesis by inhibiting IMPDH, which inhibits the proliferation of B and T cells. Sirolimus blocks T cell proliferation by blocking the IL-2 receptor, but it can cause hyperlipidaemia. Monoclonal antibodies, such as daclizumab and basiliximab, are selective inhibitors of the IL-2 receptor.
Patients on long-term immunosuppression require regular monitoring for complications such as cardiovascular disease, renal failure, and malignancy. Tacrolimus and ciclosporin can cause hypertension, hyperglycaemia, and hyperlipidaemia, which can accelerate cardiovascular disease. Nephrotoxic effects of these medications, graft rejection, or recurrence of the original disease can cause renal failure. Patients should also be educated about minimizing sun exposure to reduce the risk of squamous cell carcinomas and basal cell carcinomas. Regular monitoring can help detect and manage these complications.
-
This question is part of the following fields:
- Renal Medicine/Urology
-
-
Question 30
Incorrect
-
A 59-year-old man comes to the hospital complaining of central chest pain that spreads to his left arm, accompanied by sweating and nausea. In the Emergency Department, an ECG reveals ST elevation in leads V1, V2, V3, and V4, and he is given 300mg of aspirin before undergoing primary percutaneous coronary intervention. After a successful procedure, he is admitted to the Coronary Care Unit and eventually discharged with secondary prevention medication and lifestyle modification advice, as well as a referral to a cardiac rehabilitation program.
During a check-up with his GP three weeks later, the patient reports feeling well but still experiences fatigue and shortness of breath during rehab activities. He has not had any further chest pain episodes. However, an ECG shows Q waves and convex ST elevation in leads V1, V2, V3, and V4.
What is the most likely diagnosis?Your Answer: Post-MI pericarditis (Dressler's syndrome)
Correct Answer: Left ventricular aneurysm
Explanation:Complications of Myocardial Infarction
Myocardial infarction (MI) can lead to various complications, which can occur immediately, early, or late after the event. Cardiac arrest is the most common cause of death following MI, usually due to ventricular fibrillation. Patients are treated with defibrillation as per the ALS protocol. Cardiogenic shock may occur if a significant portion of the ventricular myocardium is damaged, leading to a decrease in ejection fraction. This condition is challenging to treat and may require inotropic support and/or an intra-aortic balloon pump. Chronic heart failure may develop if the patient survives the acute phase, and loop diuretics such as furosemide can help decrease fluid overload. Tachyarrhythmias, such as ventricular fibrillation and ventricular tachycardia, are common complications of MI. Bradyarrhythmias, such as atrioventricular block, are more common following inferior MI.
Pericarditis is a common complication of MI in the first 48 hours, characterized by typical pericarditis pain, a pericardial rub, and a pericardial effusion. Dressler’s syndrome, which occurs 2-6 weeks after MI, is an autoimmune reaction against antigenic proteins formed during myocardial recovery. It is treated with NSAIDs. Left ventricular aneurysm may form due to weakened myocardium, leading to persistent ST elevation and left ventricular failure. Patients are anticoagulated due to the increased risk of thrombus formation and stroke. Left ventricular free wall rupture and ventricular septal defect are rare but serious complications that require urgent surgical correction. Acute mitral regurgitation may occur due to ischaemia or rupture of the papillary muscle, leading to acute hypotension and pulmonary oedema. Vasodilator therapy and emergency surgical repair may be necessary.
-
This question is part of the following fields:
- Cardiovascular
-
-
Question 31
Correct
-
You assess a 65-year-old man with chronic obstructive pulmonary disease (COPD) who receives approximately 7-8 rounds of oral prednisolone annually to manage infectious exacerbations of his condition. What is one of the potential negative consequences associated with prolonged steroid use?
Your Answer: Avascular necrosis
Explanation:Osteopaenia and osteoporosis are associated with prolonged use of corticosteroids, not osteomalacia.
Understanding Corticosteroids and Their Side-Effects
Corticosteroids are commonly prescribed therapies used to replace or augment the natural activity of endogenous steroids. They can be administered systemically or locally, depending on the condition being treated. However, the usage of corticosteroids is limited due to their numerous side-effects, which are more common with prolonged and systemic therapy.
Glucocorticoid side-effects include impaired glucose regulation, increased appetite and weight gain, hirsutism, hyperlipidaemia, Cushing’s syndrome, moon face, buffalo hump, striae, osteoporosis, proximal myopathy, avascular necrosis of the femoral head, immunosuppression, increased susceptibility to severe infection, reactivation of tuberculosis, insomnia, mania, depression, psychosis, peptic ulceration, acute pancreatitis, glaucoma, cataracts, suppression of growth in children, intracranial hypertension, and neutrophilia.
On the other hand, mineralocorticoid side-effects include fluid retention and hypertension. It is important to note that patients on long-term steroids should have their doses doubled during intercurrent illness. Longer-term systemic corticosteroids suppress the natural production of endogenous steroids, so they should not be withdrawn abruptly as this may precipitate an Addisonian crisis. The British National Formulary suggests gradual withdrawal of systemic corticosteroids if patients have received more than 40mg prednisolone daily for more than one week, received more than three weeks of treatment, or recently received repeated courses.
-
This question is part of the following fields:
- Endocrinology/Metabolic Disease
-
-
Question 32
Correct
-
A 25-year-old woman arrives at the Emergency Department accompanied by a colleague from work. She complains of experiencing a 'fluttering' sensation in her chest for the past 30 minutes. Although she admits to feeling 'a bit faint,' she denies any chest pain or difficulty breathing. Upon conducting an ECG, the results show a regular tachycardia of 166 bpm with a QRS duration of 110 ms. Her blood pressure is 102/68 mmHg, and her oxygen saturation levels are at 99% on room air. What is the most appropriate course of action?
Your Answer: Carotid sinus massage
Explanation:Vagal manoeuvres, such as carotid sinus massage or the Valsalva manoeuvre, are the initial treatment for supraventricular tachycardia. Adenosine should only be administered if these manoeuvres are ineffective. According to the ALS guidelines, direct current cardioversion is not recommended for this condition.
Understanding Supraventricular Tachycardia
Supraventricular tachycardia (SVT) is a type of tachycardia that originates above the ventricles. It is commonly associated with paroxysmal SVT, which is characterized by sudden onset of a narrow complex tachycardia, usually an atrioventricular nodal re-entry tachycardia (AVNRT). Other causes include atrioventricular re-entry tachycardias (AVRT) and junctional tachycardias.
When it comes to acute management, vagal maneuvers such as the Valsalva maneuver or carotid sinus massage can be used. Intravenous adenosine is also an option, with a rapid IV bolus of 6mg given initially, followed by 12mg and then 18mg if necessary. However, adenosine is contraindicated in asthmatics, and verapamil may be a better option for them. Electrical cardioversion is another option.
To prevent episodes of SVT, beta-blockers can be used. Radio-frequency ablation is also an option. It is important to work with a healthcare provider to determine the best course of treatment for each individual case.
Overall, understanding SVT and its management options can help individuals with this condition better manage their symptoms and improve their quality of life.
-
This question is part of the following fields:
- Cardiovascular
-
-
Question 33
Incorrect
-
A 55-year-old man is found to have an irregularly, irregular pulse during a routine check-up. An ECG reveals absent P waves and irregular R-R intervals. The patient has moderate renal impairment. What is the most appropriate treatment option?
Your Answer: Aspirin
Correct Answer: No treatment
Explanation:Understanding Anticoagulation Treatment for Atrial Fibrillation: A CHADS-VASc Scoring System Overview
Atrial fibrillation (AF) is a common rhythm disturbance that can increase the risk of stroke. To determine the appropriate treatment for primary prevention of stroke, healthcare professionals use the CHADS-VASc scoring system. This system assigns points based on various risk factors, including age, sex, hypertension, diabetes, previous stroke or transient ischemic attack, and vascular disease.
This score is based on a point system in which 2 points are assigned for a history of stroke or transient ischemic attack or age 75 years or more and 1 point each is assigned for age 65 to 74 years; a history of hypertension, diabetes, recent cardiac failure, vascular disease (myocardial infarction, complex aortic plaque, and peripheral arterial disease (PAD), including prior revascularization, amputation due to PAD, or angiographic evidence of PAD, etc.); and female gender, resulting in a maximum score of 9 points.
Score Risk Anticoagulation Therapy 0 (male) or 1 (female) Low No anticoagulant therapy 1 (male) Moderate Oral anticoagulant should be considered 2 or greater High Oral anticoagulant is recommended Aspirin is not recommended for primary prevention of stroke in patients with AF, but may be used for secondary prevention after a stroke. Clexane, a low-molecular-weight heparin, is not used for long-term treatment of AF. Dipyridamole may be used in combination with clopidogrel or aspirin for stroke treatment, but not for prevention in AF patients.
It is important to accurately identify AF and assess the patient’s risk using the CHADS-VASc scoring system to determine the appropriate anticoagulation treatment. NOACs are only licensed for non-valvular AF, so patients with valvular AF should be treated with warfarin or seek advice from a specialist.
-
This question is part of the following fields:
- Cardiovascular
-
-
Question 34
Correct
-
A 10-year-old boy presents to the General Practitioner with his father who reports that he has been falling behind at school. His teachers have noticed that multiple times during lessons he appears to be 'staring into space' for about ten seconds at a time, during which there is twitching of his arms. He does not remember these episodes. He is referred for an electroencephalography (EEG) which shows spike-and-wave complexes during an episode. He is started on a new medication.
Which of the following is the most likely treatment?Your Answer: Ethosuximide
Explanation:When it comes to treating absence seizures, ethosuximide is the preferred first-line option for women and girls who may become pregnant. Boys and men can be treated with either ethosuximide or sodium valproate. Absence seizures are most common in children and young people, and are characterized by brief episodes of fixed gaze and possible arm or leg movements. An EEG can confirm the presence of spike-and-wave complexes during an attack. Sodium valproate may be used for boys and men, but should be avoided in women of childbearing potential due to the risk of birth defects. Carbamazepine is not effective for absence seizures, but is the first-line treatment for focal seizures. Lamotrigine may be used as a second-line option if other treatments are not effective or well-tolerated. In cases of status epilepticus, intravenous lorazepam is the preferred treatment in a hospital setting, but buccal midazolam or rectal diazepam can be used if intravenous access is not available.
-
This question is part of the following fields:
- Neurology
-
-
Question 35
Correct
-
A 67-year-old male with a history of ischaemic heart disease is experiencing depression after a recent heart attack. Which antidepressant would be the most suitable to initiate?
Your Answer: Sertraline
Explanation:Selective serotonin reuptake inhibitors (SSRIs) are commonly used as the first-line treatment for depression. Citalopram and fluoxetine are the preferred SSRIs, while sertraline is recommended for patients who have had a myocardial infarction. However, caution should be exercised when prescribing SSRIs to children and adolescents. Gastrointestinal symptoms are the most common side-effect, and patients taking SSRIs are at an increased risk of gastrointestinal bleeding. Patients should also be aware of the possibility of increased anxiety and agitation after starting a SSRI. Fluoxetine and paroxetine have a higher propensity for drug interactions.
The Medicines and Healthcare products Regulatory Agency (MHRA) has issued a warning regarding the use of citalopram due to its association with dose-dependent QT interval prolongation. As a result, citalopram and escitalopram should not be used in patients with congenital long QT syndrome, known pre-existing QT interval prolongation, or in combination with other medicines that prolong the QT interval. The maximum daily dose of citalopram is now 40 mg for adults, 20 mg for patients older than 65 years, and 20 mg for those with hepatic impairment.
When initiating antidepressant therapy, patients should be reviewed by a doctor after 2 weeks. Patients under the age of 25 years or at an increased risk of suicide should be reviewed after 1 week. If a patient responds well to antidepressant therapy, they should continue treatment for at least 6 months after remission to reduce the risk of relapse. When stopping a SSRI, the dose should be gradually reduced over a 4 week period, except for fluoxetine. Paroxetine has a higher incidence of discontinuation symptoms, including mood changes, restlessness, difficulty sleeping, unsteadiness, sweating, gastrointestinal symptoms, and paraesthesia.
When considering the use of SSRIs during pregnancy, the benefits and risks should be weighed. Use during the first trimester may increase the risk of congenital heart defects, while use during the third trimester can result in persistent pulmonary hypertension of the newborn. Paroxetine has an increased risk of congenital malformations, particularly in the first trimester.
-
This question is part of the following fields:
- Psychiatry
-
-
Question 36
Incorrect
-
A 55-year-old woman complains of urine leakage issues for the past six months. She reports frequent urination and difficulty reaching the toilet in time. She denies experiencing urine loss during coughing or sneezing. What is the best initial treatment option?
Your Answer: Pelvic floor muscle training
Correct Answer: Bladder retraining
Explanation:The initial treatment for urinary incontinence differs depending on the type. For urge incontinence, bladder retraining is the recommended first-line approach. On the other hand, for stress incontinence, pelvic floor muscle training is the preferred initial treatment.
Understanding Urinary Incontinence: Causes, Classification, and Management
Urinary incontinence (UI) is a common condition that affects around 4-5% of the population, with elderly females being more susceptible. Several risk factors contribute to UI, including advancing age, previous pregnancy and childbirth, high body mass index, hysterectomy, and family history. UI can be classified into different types, such as overactive bladder (OAB)/urge incontinence, stress incontinence, mixed incontinence, overflow incontinence, and functional incontinence.
Initial investigation of UI involves completing bladder diaries for at least three days, vaginal examination, urine dipstick and culture, and urodynamic studies. Management of UI depends on the predominant type of incontinence. For urge incontinence, bladder retraining and bladder stabilizing drugs such as antimuscarinics are recommended. For stress incontinence, pelvic floor muscle training and surgical procedures such as retropubic mid-urethral tape procedures may be offered. Duloxetine, a combined noradrenaline and serotonin reuptake inhibitor, may also be used as an alternative to surgery.
In summary, understanding the causes, classification, and management of UI is crucial in providing appropriate care for patients. Early diagnosis and intervention can significantly improve the quality of life for those affected by this condition.
-
This question is part of the following fields:
- Renal Medicine/Urology
-
-
Question 37
Correct
-
A 60-year-old woman complains of persistent bilateral shoulder and hip pain that has been bothering her for 4 weeks. The pain is more severe in the mornings, and she has been experiencing fatigue along with it. Her blood tests reveal an ESR of 55 mm/hr. What is the most suitable treatment option for her probable diagnosis?
Your Answer: Prednisolone
Explanation:The patient is exhibiting typical signs of polymyalgia rheumatica, which can be effectively treated with steroids. While ibuprofen and codeine may offer some relief, hydroxychloroquine is primarily used to treat systemic lupus erythematosus, and sulfasalazine is a DMARD used for rheumatoid arthritis and psoriasis.
Polymyalgia Rheumatica: A Condition of Muscle Stiffness in Older People
Polymyalgia rheumatica (PMR) is a common condition that affects older people. It is characterized by muscle stiffness and elevated inflammatory markers. Although it is closely related to temporal arteritis, the underlying cause is not fully understood, and it does not appear to be a vasculitic process. PMR typically affects patients over the age of 60 and has a rapid onset, usually within a month. Patients experience aching and morning stiffness in proximal limb muscles, along with mild polyarthralgia, lethargy, depression, low-grade fever, anorexia, and night sweats.
To diagnose PMR, doctors look for raised inflammatory markers, such as an ESR of over 40 mm/hr. Creatine kinase and EMG are normal. Treatment for PMR involves prednisolone, usually at a dose of 15mg/od. Patients typically respond dramatically to steroids, and failure to do so should prompt consideration of an alternative diagnosis.
-
This question is part of the following fields:
- Musculoskeletal
-
-
Question 38
Incorrect
-
A 32-year-old teacher presents with bloody diarrhoea; he says that he has been passing up to 10 motions a day for the past 3–4 weeks. He now presents to the Emergency Department, complaining of abdominal pain and bloating. On examination, he is dehydrated with a clearly distended, tender abdomen. There is anaemia with raised plasma viscosity; potassium level is mildly decreased at 3.3 mmol/l (reference range 3.5–5.1 mmol/l), and urea level is raised, in keeping with dehydration. Liver function testing reveals a decreased albumin level. Autoantibody screen is positive for c-ANCA (cytoplasmic anti-neutrophil cytoplasmic antibody). Colonoscopy shows friable mucosa with a uniform pattern of inflammation and loss of normal mucosa. Stool culture is negative.
Which one of these diagnoses fits best with this clinical picture?Your Answer: Crohn's disease
Correct Answer: Ulcerative colitis
Explanation:Ulcerative colitis is a type of inflammatory bowel disease that affects only the large bowel. Symptoms include rectal bleeding, frequent stools, and mucus discharge from the rectum. Diagnosis is confirmed through sigmoidoscopy, which reveals continuous inflammation with loss of normal mucosa and intense infiltration of the mucosa and submucosa with various immune cells. The presence of p-ANCA is highly associated with UC. Crohn’s disease, coeliac disease, ischaemic colitis, and diverticulitis have different clinical presentations and diagnostic criteria, which do not match the symptoms and test results of this patient.
-
This question is part of the following fields:
- Gastroenterology/Nutrition
-
-
Question 39
Correct
-
A 72-year-old man is admitted after a fall and a period of time on the floor. He has a long history of chronic illness and immobility, with medications for hypertension, cardiac failure and chronic chest disease.
On examination, he is obese, with a blood pressure of 110/75 mmHg, a pulse of 100 beats per minute and a temperature of 38.5°C. Respiratory examination reveals evidence of right lower lobe consolidation. He has no signs of traumatic bone injury.
Investigations reveal the following:
Investigation Result Normal value
Chest X-ray Right lower lobe pneumonia
Haemoglobin (Hb) 131 g/l 135–175 g/l
White cell count (WCC) 15.4 × 109/l 4.0–11.0 × 109/l
Platelets (PLT) 312 × 109/l 150–400 × 109/l
Sodium (Na+) 142 mmol/l 135–145 mmol/l
Potassium (K+) 6.7 mmol/l 3.5–5.0 mmol/l
Urea 15.1 mmol/l 2.5–6.5 mmol/l
Creatinine (Cr) 312 μmol/l 50–120 µmol/l
Creatine kinase (CK) 1524 IU/l 23–175 IU/l
Catheter specimen of urine: Red/brown in colour.
+++ for blood.
No red cells on microscopy
Which of the following diagnoses fits best with this clinical picture?Your Answer: Rhabdomyolysis
Explanation:The patient’s elevated CK levels and urine test indicating blood without cells strongly suggest rhabdomyolysis as the cause of their kidney failure, likely due to their fall and prolonged time on the floor. Treatment should focus on managing hyperkalemia and ensuring proper hydration. While acute myocardial infarction cannot be ruled out entirely, the absence of discolored urine and other symptoms make rhabdomyolysis a more likely diagnosis. Acute tubular necrosis is also unlikely, as there are no epithelial cells present on urinalysis. While sepsis should be considered, the presence of red-colored urine and a history of a fall make rhabdomyolysis the most probable cause. Polymyositis, a type of inflammatory myopathy, typically presents with proximal myopathy and is more commonly seen in middle-aged women.
-
This question is part of the following fields:
- Renal Medicine/Urology
-
-
Question 40
Correct
-
Which of the following characteristics is more prevalent in Crohn's disease compared to ulcerative colitis?
Your Answer: Abdominal mass palpable in the right iliac fossa
Explanation:Crohn’s disease and ulcerative colitis are the two main types of inflammatory bowel disease with many similarities in symptoms and management options. However, there are key differences such as non-bloody diarrhea and upper gastrointestinal symptoms being more common in Crohn’s disease, while bloody diarrhea and abdominal pain in the left lower quadrant are more common in ulcerative colitis. Complications and pathology also differ between the two diseases.
-
This question is part of the following fields:
- Gastroenterology/Nutrition
-
-
Question 41
Correct
-
A 28-year-old woman presents to her General Practitioner complaining of wrist pain and reduced grip strength for the past 3 weeks. She denies any history of trauma. During the examination, the patient experiences tenderness over the radial styloid and painful resisted abduction of the thumb.
Which of the following examination findings would most strongly suggest a diagnosis of de Quervain's tenosynovitis in this patient?Your Answer: Positive Finkelstein’s test
Explanation:Common Orthopedic Tests and Their Relevance to De Quervain’s Tenosynovitis
De Quervain’s tenosynovitis is a condition that affects the first extensor compartment of the wrist, causing inflammation of the sheath containing the extensor pollicis brevis and abductor pollicis longus tendons. Several orthopedic tests can help diagnose this condition, including Finkelstein’s test, Tinel’s sign, Froment’s sign, and Phalen’s test. However, the squeeze test is not relevant to the diagnosis of de Quervain’s tenosynovitis.
Finkelstein’s test involves flexing the thumb across the palm of the hand and moving the wrist into flexion and ulnar deviation. This action stresses the affected tendons and reproduces pain in a positive test. Tinel’s sign is used to diagnose compressive neuropathy, such as carpal tunnel syndrome, by tapping the site of the nerve and causing paraesthesia in the distribution of the nerve in a positive test. Froment’s sign tests for ulnar nerve palsy by assessing the action of the adductor pollicis, while Phalen’s test diagnoses carpal tunnel syndrome by flexing both wrists fully and pushing the dorsal surfaces of both hands together for 60 seconds.
Understanding the relevance of these orthopedic tests can aid in the diagnosis of de Quervain’s tenosynovitis and other related conditions.
-
This question is part of the following fields:
- Musculoskeletal
-
-
Question 42
Correct
-
A grandfather visits you as his grandson has been diagnosed with hypospadias. He wants to know what treatment options are available and if there are any measures he can take to prevent the condition from worsening.
Your Answer: Corrective surgery at around 12 months of age is required and children should not be circumcised
Explanation:The usual age for performing hypospadias surgery is approximately 12 months.
Understanding Hypospadias: A Congenital Abnormality of the Penis
Hypospadias is a condition that affects approximately 3 out of 1,000 male infants. It is a congenital abnormality of the penis that is usually identified during the newborn baby check. However, if missed, parents may notice an abnormal urine stream. This condition is characterized by a ventral urethral meatus, a hooded prepuce, and chordee in more severe forms. The urethral meatus may open more proximally in the more severe variants, but 75% of the openings are distally located. There appears to be a significant genetic element, with further male children having a risk of around 5-15%.
Hypospadias most commonly occurs as an isolated disorder, but it can also be associated with other conditions such as cryptorchidism (present in 10%) and inguinal hernia. Once hypospadias has been identified, infants should be referred to specialist services. Corrective surgery is typically performed when the child is around 12 months of age. It is essential that the child is not circumcised prior to the surgery as the foreskin may be used in the corrective procedure. In boys with very distal disease, no treatment may be needed. Understanding hypospadias is important for parents and healthcare providers to ensure proper management and treatment of this condition.
-
This question is part of the following fields:
- Paediatrics
-
-
Question 43
Correct
-
A 47-year-old woman visits the local clinic with her husband, who reports that his wife has been experiencing chills, night sweats, coughing up yellow phlegm, and is having difficulty answering basic questions.
Which of the following is NOT part of the scoring evaluation for community-acquired pneumonia (CAP)?Your Answer: Creatinine
Explanation:Understanding the CURB65 Score and its Criteria
The CURB65 score is a tool used to assess the severity of community-acquired pneumonia (CAP) in patients. It consists of five criteria, including confusion, respiratory rate, blood pressure, age, and urea levels. However, creatinine does not play a role in this score.
While the CURB65 score helps determine the appropriate level of care for patients with CAP, it is important to note that acute kidney injury and high creatinine levels may still be independent risk factors for morbidity and mortality.
The criteria for the CURB65 score are as follows: a score of 0-1 indicates that the patient can be managed at home, a score of 2-3 suggests hospital management with close monitoring, and a score of 4-5 indicates the need for admission and observation, potentially in an intensive therapy unit.
Age greater than 65 years old is one of the defining criteria of the CURB65 score, while confusion, respiratory rate > 30 breaths per minute, and blood pressure systolic < 90 mmHg or diastolic < 60 mmHg are also included. Additionally, a blood urea nitrogen level higher than 7 mmol/l is another criterion. In summary, understanding the CURB65 score and its criteria is essential in determining the appropriate level of care for patients with CAP. However, it is important to consider other risk factors, such as creatinine levels, in predicting morbidity and mortality.
-
This question is part of the following fields:
- Respiratory Medicine
-
-
Question 44
Incorrect
-
An 80-year-old man presents with right-sided facial droop, dysphasia, and right-sided hemianopia. He has a medical history of gout, recurrent UTIs, dementia, and diabetes mellitus. A CT head is unremarkable, and an MRI head reveals a left-sided infarct. Which of the patient's pre-existing conditions elevate his chances of experiencing an ischemic stroke?
Your Answer: Dementia
Correct Answer: Diabetes mellitus
Explanation:The following factors increase the risk of ischaemic stroke: age, hypertension, smoking, hyperlipidaemia, diabetes mellitus, and atrial fibrillation. However, gout, recurrent UTIs, and dementia do not have an impact on stroke risk. Taking aspirin can lower the risk of stroke.
Understanding Stroke: A Basic Overview
Stroke is a significant cause of morbidity and mortality, with over 150,000 cases reported annually in the UK alone. It is the fourth leading cause of death in the country, killing twice as many women as breast cancer each year. However, the prevention and treatment of strokes have undergone significant changes in the past decade. What was once considered an untreatable condition is now viewed as a brain attack that requires emergency assessment to determine if patients can benefit from new treatments such as thrombolysis.
A stroke, also known as a cerebrovascular accident (CVA), occurs when there is a sudden interruption in the vascular supply of the brain. This interruption can lead to irreversible damage as neural tissue is entirely dependent on aerobic metabolism. There are two main types of strokes: ischaemic and haemorrhagic. Ischaemic strokes occur when there is a blockage in the blood vessel that stops blood flow, while haemorrhagic strokes happen when a blood vessel bursts, leading to a reduction in blood flow.
Symptoms of a stroke include motor weakness, speech problems, swallowing difficulties, visual field defects, and balance problems. The Oxford Stroke Classification is a formal system used to classify strokes based on initial symptoms. Patients with suspected stroke require emergency neuroimaging to determine if they are suitable for thrombolytic therapy to treat early ischaemic strokes. If the stroke is haemorrhagic, neurosurgical consultation should be considered for advice on further management.
In conclusion, understanding the basics of stroke is crucial in identifying and managing the condition. Early intervention and treatment can significantly improve outcomes for patients.
-
This question is part of the following fields:
- Neurology
-
-
Question 45
Incorrect
-
A 49-year-old man goes for a routine medical check-up for his new job. He has no complaints and his physical examination is unremarkable. Blood tests are conducted and all results are normal except for:
Uric acid 0.66 mmol/l (0.18-0.48 mmol/l)
After reading online, the patient is concerned about his chances of developing gout. What treatment should be initiated based on this finding?Your Answer: Colchicine
Correct Answer: No treatment
Explanation:NICE does not recommend treating asymptomatic hyperuricaemia as a means of preventing gout. While high levels of serum uric acid are associated with gout, it is possible to have hyperuricaemia without experiencing any symptoms. NICE has found that attempting to prevent gout in this way is not cost-effective or beneficial for patients. Instead, lifestyle changes such as reducing consumption of red meat, alcohol, and sugar can help lower uric acid levels without the need for medication. The other options listed may be appropriate for treating gout, but are not recommended in the absence of symptoms.
Understanding Hyperuricaemia
Hyperuricaemia is a condition characterized by elevated levels of uric acid in the blood. This can be caused by either increased cell turnover or reduced renal excretion of uric acid. While some patients may not experience any symptoms, hyperuricaemia may be associated with hyperlipidaemia, hypertension, and the metabolic syndrome.
There are several factors that can contribute to increased uric acid synthesis, including Lesch-Nyhan disease, myeloproliferative disorders, a diet rich in purines, exercise, psoriasis, and cytotoxics. On the other hand, decreased excretion of uric acid can be caused by drugs such as low-dose aspirin, diuretics, and pyrazinamide, as well as pre-eclampsia, alcohol consumption, renal failure, and lead exposure.
It is important to understand the underlying causes of hyperuricaemia in order to properly manage and treat the condition. By identifying and addressing the contributing factors, healthcare professionals can help prevent complications such as gout and kidney stones.
-
This question is part of the following fields:
- Musculoskeletal
-
-
Question 46
Correct
-
A 58-year-old man complains of recurrent episodes of vertigo and dizziness. These episodes are usually triggered by a change in head position and usually last for about 30 seconds. The examination of the cranial nerves and ears shows no abnormalities. His blood pressure is 122/80 mmHg while sitting and 118/76 mmHg while standing. Assuming that the diagnosis is benign paroxysmal positional vertigo, what is the most suitable course of action to confirm the diagnosis?
Your Answer: Dix-Hallpike manoeuvre
Explanation:Understanding Benign Paroxysmal Positional Vertigo
Benign paroxysmal positional vertigo (BPPV) is a common condition that causes sudden dizziness and vertigo triggered by changes in head position. It typically affects individuals over the age of 55 and is less common in younger patients. Symptoms include vertigo triggered by movements such as rolling over in bed or looking upwards, and may be accompanied by nausea. Each episode usually lasts between 10-20 seconds and can be diagnosed through a positive Dix-Hallpike manoeuvre, which involves the patient experiencing vertigo and rotatory nystagmus.
Fortunately, BPPV has a good prognosis and often resolves on its own within a few weeks to months. Treatment options include the Epley manoeuvre, which is successful in around 80% of cases, and vestibular rehabilitation exercises such as the Brandt-Daroff exercises. While medication such as Betahistine may be prescribed, it tends to have limited value. However, it is important to note that around half of people with BPPV will experience a recurrence of symptoms 3-5 years after their initial diagnosis.
Overall, understanding BPPV and its symptoms can help individuals seek appropriate treatment and manage their condition effectively.
-
This question is part of the following fields:
- ENT
-
-
Question 47
Correct
-
A 68-year-old man with a history of uncontrolled hypertension and diabetes mellitus presents to the ED with acute onset of numbness on the right side of his body. He denies any other symptoms. A CT scan of the head was performed and revealed no evidence of hemorrhage or mass. What is the probable diagnosis?
Your Answer: Lacunar infarct
Explanation:If a patient has a lacunar stroke, they may experience a purely motor, purely sensory, or mixed motor and sensory deficit. A total anterior circulation infarct would cause unilateral weakness in the face, arm, and leg, as well as a homonymous hemianopia and symptoms of higher cerebral dysfunction. A posterior circulation infarct could result in a cerebellar or brainstem syndrome, loss of consciousness, or an isolated homonymous hemianopia. A partial anterior circulation infarct would lead to two of the following: unilateral weakness, homonymous hemianopia, and higher cerebral dysfunction. The absence of hemorrhage on a CT scan suggests that this is most likely a lacunar infarct, as there is only a purely sensory deficit.
Lacunar stroke is a type of ischaemic stroke that accounts for approximately 20-25% of all cases. It occurs when a single penetrating branch of a large cerebral artery becomes blocked, leading to damage in the internal capsule, thalamus, and basal ganglia. The symptoms of lacunar stroke can vary depending on the location of the blockage, but they typically involve either purely motor or purely sensory deficits. Other possible presentations include sensorimotor stroke, ataxic hemiparesis, and dysarthria-clumsy hand syndrome. Unlike other types of stroke, lacunar syndromes tend to lack cortical findings such as aphasia, agnosia, neglect, apraxia, or hemianopsia.
-
This question is part of the following fields:
- Neurology
-
-
Question 48
Incorrect
-
A 28-year-old woman returns home from hospital after the birth of her first child. Over the next week, she becomes increasingly irritable, feels low in mood and is very anxious that she is not taking good care of her baby.
Which of the following is the most likely diagnosis?Your Answer: Postpartum depression
Correct Answer: Postpartum blues
Explanation:Understanding Postpartum Blues: Symptoms and Differential Diagnosis
Postpartum blues, also known as baby blues, is a common condition that affects many new mothers. It typically occurs within the first week after delivery and is characterized by short-lived episodes of irritability, crying, emotional lability, and mildly low mood. Unlike postpartum psychosis or major depression, postpartum blues does not involve confusion, delusional beliefs, or frank major depressive symptoms.
While anxiety is a common feature of many affective disorders, it is not sufficient to warrant a diagnosis of a specific anxiety disorder in the case of postpartum blues. However, it is important to consider depression as a possible diagnosis when a patient presents with low mood, anxiety, and irritability.
It is essential to follow up with patients experiencing postpartum blues to ensure that their symptoms resolve within a few days. If symptoms persist or worsen, further evaluation may be necessary to rule out other conditions such as postpartum depression. By understanding the symptoms and differential diagnosis of postpartum blues, healthcare providers can provide appropriate reassurance and support to new mothers during this challenging time.
-
This question is part of the following fields:
- Psychiatry
-
-
Question 49
Incorrect
-
A 50-year-old man is brought to the Emergency Department by his wife after developing a severe cutaneous hypersensitivity reaction. He has a history of rheumatoid arthritis for which he was taking non-steroidal anti-inflammatory drugs (NSAIDs). Still, his symptoms did not improve, and his rheumatologist prescribed him methotrexate a few days ago.
On examination, Nikolsky’s sign is present and affects 45% of his body’s surface area.
What is the underlying condition?Your Answer: Erythema multiforme
Correct Answer: Toxic epidermal necrolysis
Explanation:Common Skin Hypersensitivity Reactions and their Causes
Skin hypersensitivity reactions can range from mild to life-threatening. Here are some common types and their causes:
Toxic Epidermal Necrolysis: This is the most serious skin hypersensitivity reaction, with a high mortality rate. It is usually caused by drugs such as NSAIDs, steroids, methotrexate, allopurinol and penicillins.
Erythema Multiforme: This is a target-like lesion that commonly occurs on the palms and soles. It is usually caused by drugs such as penicillins, phenytoin, NSAIDs and sulfa drugs. Mycoplasma and herpes simplex infections can also cause erythema multiforme.
Erythema Nodosum: This is an inflammatory condition of subcutaneous tissue. The most common causes are recent streptococcal infection, sarcoidosis, tuberculosis and inflammatory bowel disease.
Fixed Drug Reaction: This is a localised allergic drug reaction that recurs at the same anatomic site of the skin with repeated drug exposure. It is most commonly caused by aspirin, NSAIDs, tetracycline and barbiturate.
Morbilliform Rash: This is a mild hypersensitivity skin reaction that manifests as a generalised maculopapular eruption that blanches with pressure. The rash can be caused by penicillin, sulfa drugs, allopurinol and phenytoin.
-
This question is part of the following fields:
- Dermatology
-
-
Question 50
Correct
-
During your FY2 rotation in General Practice, you saw a 76-year-old man in your GP clinic who had been experiencing blurring of vision in his right eye for the past 5 months. He finally decided to seek medical attention because he felt his vision was becoming increasingly distorted. Upon examination, there were no signs of inflammation in either eye, and both corneas were clear with no fluorescein uptake. However, on dilated fundoscopy, you noticed yellowish deposits in the center of the macula in his right eye. What is the curative treatment for this condition?
Your Answer: None
Explanation:Dry age-related macular degeneration, characterized by yellowish drusen deposits, currently has no cure. However, high doses of beta-carotene, vitamins C and E, and zinc can be administered to slow down the progression of visual loss. On the other hand, wet AMD can be treated with intravitreal anti-VEGF injections, laser photocoagulation, and photodynamic therapy.
Age-related macular degeneration (ARMD) is a common cause of blindness in the UK, characterized by the degeneration of the central retina (macula) and the formation of drusen. It is more prevalent in females and is strongly associated with advancing age, smoking, family history, and conditions that increase the risk of ischaemic cardiovascular disease. ARMD can be classified into two forms: dry and wet. Dry ARMD is more common and is characterized by drusen, while wet ARMD is characterized by choroidal neovascularisation and carries a worse prognosis. Clinical features of ARMD include subacute onset of visual loss, difficulties in dark adaptation, and visual disturbances such as photopsia and glare.
To diagnose ARMD, slit-lamp microscopy and color fundus photography are used to identify any pigmentary, exudative, or haemorrhagic changes affecting the retina. Fluorescein angiography and indocyanine green angiography may also be used to visualize changes in the choroidal circulation. Treatment for dry ARMD involves a combination of zinc with anti-oxidant vitamins A, C, and E, which has been shown to reduce disease progression by around one third. For wet ARMD, anti-VEGF agents such as ranibizumab, bevacizumab, and pegaptanib are used to limit disease progression and stabilize or reverse visual loss. Laser photocoagulation may also be used to slow progression, but anti-VEGF therapies are usually preferred due to the risk of acute visual loss after treatment.
In summary, ARMD is a common cause of blindness in the UK that is strongly associated with advancing age, smoking, and family history. It can be classified into dry and wet forms, with wet ARMD carrying a worse prognosis. Diagnosis involves the use of various imaging techniques, and treatment options include a combination of zinc and anti-oxidant vitamins for dry ARMD and anti-VEGF agents or laser photocoagulation for wet ARMD.
-
This question is part of the following fields:
- Ophthalmology
-
-
Question 51
Correct
-
A 50-year-old man describes intermittent unilateral pain above and behind his left eye, which has woken him from sleep every night for the previous 7 days. The pain is described as severe and stabbing, lasting about 30 minutes and making him restless and agitated. It is associated with tearing from his left eye and nasal stuffiness. When he looked in the mirror during attacks, he had noted his left eyelid drooping. He remembers he had experienced similar symptoms for about a month last year, but that they had resolved spontaneously and he had not sought medical attention. Physical examination is normal. He is a lifelong smoker.
Which of the following is the most likely diagnosis?
Your Answer: Cluster headache
Explanation:Differentiating Headache Disorders: Cluster Headache, Trigeminal Neuralgia, Migraine, Temporal Arteritis, and Paroxysmal Hemicrania
Headache disorders can be challenging to diagnose due to overlapping symptoms. However, understanding the distinct characteristics of each disorder can aid in accurate diagnosis and appropriate treatment.
Cluster Headache: This disorder is more common in men and presents with intense pain localized around one eye, lasting from a few minutes up to 3 hours. It may be accompanied by lacrimation and nasal congestion and has a circadian pattern of occurring every day for a number of weeks, followed by a symptom-free period.
Trigeminal Neuralgia: This disorder is characterized by recurrent unilateral brief electric shock-like pains, limited to the distribution of one or more divisions of the trigeminal nerve. Pain is triggered by innocuous stimuli such as hair brushing and lasts from a fraction of a second to 2 minutes.
Migraine: This disorder typically lasts 4-72 hours and is associated with unilateral headache, nausea, vomiting, or photophobia/phonophobia. It may be preceded by an aura.
Temporal Arteritis: This disorder occurs in patients over 50 years old and presents with abrupt-onset headache, scalp pain/tenderness, jaw claudication, visual disturbances, and constitutional symptoms.
Paroxysmal Hemicrania: This disorder is related to cluster headache and presents with severe unilateral orbital pain, lacrimation, and nasal congestion. Episodes last only a few minutes and occur multiple times per day.
It is important to note that each disorder has specific diagnostic criteria, and a thorough evaluation by a healthcare professional is necessary for accurate diagnosis and treatment.
-
This question is part of the following fields:
- Neurology
-
-
Question 52
Correct
-
A 29-year-old woman arrives at the delivery ward for childbirth. She is 38 weeks pregnant and had an uncomplicated pregnancy. Her first child, who is now 2 years old, had neonatal sepsis due to Group B Streptococcus (GBS). She has no significant medical history. What is the best course of action for managing the risk of GBS?
Your Answer: Prescribe intrapartum intravenous benzylpenicillin
Explanation:Women who have had a previous baby affected by early- or late-onset GBS disease should be offered maternal intravenous antibiotic prophylaxis. The recommended option is to prescribe intrapartum intravenous benzylpenicillin or ampicillin to the mother. This is according to the Royal College of Obstetricians and Gynaecologists guidelines published in 2017. Administering intravenous benzylpenicillin to the child at birth is not appropriate unless they show signs of neonatal sepsis. Prescribing intrapartum intravenous ceftazidime is also not recommended. Monitoring the newborn for signs of sepsis for the next 72 hours is not sufficient in this case. The best approach is to administer antibiotics to the mother to prevent the development of neonatal sepsis.
Group B Streptococcus (GBS) is a common cause of severe infection in newborns. It is estimated that 20-40% of mothers carry GBS in their bowel flora, which can be passed on to their infants during labor and lead to serious infections. Prematurity, prolonged rupture of membranes, previous sibling GBS infection, and maternal pyrexia are all risk factors for GBS infection. The Royal College of Obstetricians and Gynaecologists (RCOG) has published guidelines on GBS management, which include not offering universal screening for GBS to all women and not offering screening based on maternal request. Women who have had GBS detected in a previous pregnancy should be offered intrapartum antibiotic prophylaxis (IAP) or testing in late pregnancy and antibiotics if still positive. IAP should also be offered to women with a previous baby with GBS disease, women in preterm labor, and women with a fever during labor. Benzylpenicillin is the preferred antibiotic for GBS prophylaxis.
-
This question is part of the following fields:
- Reproductive Medicine
-
-
Question 53
Correct
-
Which of the following is least likely to be associated with ankylosing spondylitis?
Your Answer: Achalasia
Explanation:Ankylosing spondylitis is associated with several features that can be remembered using the acronym ‘A’s. These include apical fibrosis, anterior uveitis, aortic regurgitation, Achilles tendonitis, AV node block, and amyloidosis. However, achalasia is not a known association with ankylosing spondylitis.
Ankylosing spondylitis is a type of spondyloarthropathy that is associated with HLA-B27. It is more commonly seen in young males, with a sex ratio of 3:1, and typically presents with lower back pain and stiffness that develops gradually. The stiffness is usually worse in the morning and improves with exercise, while pain at night may improve upon getting up. Clinical examination may reveal reduced lateral and forward flexion, as well as reduced chest expansion. Other features associated with ankylosing spondylitis include apical fibrosis, anterior uveitis, aortic regurgitation, Achilles tendonitis, AV node block, amyloidosis, cauda equina syndrome, and peripheral arthritis (more common in females).
-
This question is part of the following fields:
- Musculoskeletal
-
-
Question 54
Correct
-
A 35-year-old woman attends her first antenatal appointment at 10 weeks’ gestation. This is her second pregnancy. She has a history of hypertension and is taking medication for it. She is offered antenatal screening for chromosomal abnormalities, including Down syndrome.
Which of the following tests is used in antenatal screening for Down syndrome?Your Answer: Nuchal thickness
Explanation:Prenatal Screening Tests for Fetal Abnormalities
During pregnancy, various screening tests are conducted to detect any fetal abnormalities. One such test is the measurement of nuchal thickness, which is the fluid-filled sac between the back of the neck and the skin. An increase in thickness is associated with a decreased chance of normal birth and can detect 60-70% of Down syndrome cases. Other screening tests include measuring pregnancy-associated plasma protein-A (PAPP-A), b-human chorionic gonadotrophin (β-hCG), E3, and α-fetoprotein (AFP). Low PAPP-A, in combination with free β-hCG, is 65% accurate in diagnosing Down syndrome. The biparietal diameter (BPD) is the diameter across the skull and is associated with neurodevelopmental outcomes. Dehydroepiandrosterone sulfate is an adrenal androgen that is not influenced by pregnancy. Ultrasound assessment for herniation of the dural sac is used to screen for spina bifida. Utero-placental Doppler is used to identify at-risk women for pre-eclampsia and intrauterine growth restriction but is not useful in detecting Down syndrome.
-
This question is part of the following fields:
- Genetics
-
-
Question 55
Correct
-
A 70-year-old man comes to the clinic complaining of feeling tired and having palpitations for the last few days. Upon examination, his pulse is irregularly irregular and beats at a rate of 123 bpm. His blood pressure is 128/78 mmHg and his chest is clear. An ECG confirms that he has atrial fibrillation. What medication should be prescribed to manage his heart rate?
Your Answer: Bisoprolol
Explanation:When considering a rate control strategy for atrial fibrillation, factors such as age and symptoms should be taken into account. According to NICE guidelines, beta-blockers or rate limiting calcium channel blockers (excluding amlodipine) are preferable options.
Atrial fibrillation (AF) is a condition that requires careful management to prevent complications. The latest guidelines from NICE recommend that patients presenting with AF should be assessed for haemodynamic instability, and if present, electrically cardioverted. For haemodynamically stable patients, the management depends on how acute the AF is. If the AF has been present for less than 48 hours, rate or rhythm control may be considered. However, if it has been present for 48 hours or more, or the onset is uncertain, rate control is recommended. If long-term rhythm control is being considered, cardioversion should be delayed until the patient has been maintained on therapeutic anticoagulation for at least 3 weeks.
Rate control is the first-line treatment strategy for AF, except in certain cases. Medications such as beta-blockers, calcium channel blockers, and digoxin can be used to control the heart rate. However, digoxin is no longer considered first-line as it is less effective at controlling the heart rate during exercise. Rhythm control agents such as beta-blockers, dronedarone, and amiodarone can be used to maintain sinus rhythm in patients with a history of AF. Catheter ablation is recommended for those who have not responded to or wish to avoid antiarrhythmic medication.
The aim of catheter ablation is to ablate the faulty electrical pathways that are causing AF. The procedure is performed percutaneously, typically via the groin, and can use radiofrequency or cryotherapy to ablate the tissue. Anticoagulation should be used 4 weeks before and during the procedure. It is important to note that catheter ablation controls the rhythm but does not reduce the stroke risk, so patients still require anticoagulation as per their CHA2DS2-VASc score. Complications of catheter ablation can include cardiac tamponade, stroke, and pulmonary vein stenosis. The success rate of the procedure is around 50% for early recurrence within 3 months, and around 55% of patients who’ve had a single procedure remain in sinus rhythm after 3 years. Of patients who’ve undergone multiple procedures, around 80% are in sinus rhythm.
-
This question is part of the following fields:
- Cardiovascular
-
-
Question 56
Incorrect
-
A 28-year-old pregnant woman comes to the clinic complaining of severe vomiting. She is currently 10 weeks pregnant and this is her first pregnancy. According to RCOG guidelines, what are the diagnostic criteria for hyperemesis gravidarum?
Your Answer: Weight loss from pre-pregnancy baseline AND vomiting > 5 times per day
Correct Answer: 5% pre-pregnancy weight loss AND dehydration AND electrolyte imbalance
Explanation:Weight loss before pregnancy
Lack of proper hydration
Disruption in electrolyte balanceHyperemesis gravidarum is an extreme form of nausea and vomiting of pregnancy that occurs in around 1% of pregnancies and is most common between 8 and 12 weeks. It is associated with raised beta hCG levels and can be caused by multiple pregnancies, trophoblastic disease, hyperthyroidism, nulliparity, and obesity. Referral criteria for nausea and vomiting in pregnancy include continued symptoms with ketonuria and/or weight loss, a confirmed or suspected comorbidity, and inability to keep down liquids or oral antiemetics. The diagnosis of hyperemesis gravidarum requires the presence of 5% pre-pregnancy weight loss, dehydration, and electrolyte imbalance. Management includes first-line use of antihistamines and oral cyclizine or promethazine, with second-line options of ondansetron and metoclopramide. Admission may be needed for IV hydration. Complications can include Wernicke’s encephalopathy, Mallory-Weiss tear, central pontine myelinolysis, acute tubular necrosis, and fetal growth issues.
-
This question is part of the following fields:
- Reproductive Medicine
-
-
Question 57
Correct
-
A 68-year-old man presents to his GP with symptoms of urinary frequency, mild incontinence, and nocturia. Upon rectal examination, an enlarged and nontender prostate is noted, leading to a diagnosis of benign prostatic hyperplasia. The patient is prescribed finasteride. What is the mechanism of action of finasteride?
Your Answer: It is a 5-alpha reductase inhibitor
Explanation:Finasteride inhibits 5-alpha reductase, an enzyme that converts testosterone to DHT, and is prescribed for benign prostatic hyperplasia. This reduces the size of the prostate. Trimethoprim binds to dihydrofolate reductase, which interferes with bacterial DNA synthesis. Tamsulosin is an alpha blocker that selectively blocks alpha 1 receptors in the bladder neck and prostate, causing smooth muscle relaxation. Oxybutynin competitively antagonizes muscarinic receptors on the bladder, providing a direct spasmolytic effect on the bladder smooth muscle. Sildenafil inhibits cGMP specific phosphodiesterase type 5, improving blood flow to the penis and treating erectile dysfunction.
Understanding Finasteride: Its Uses and Side Effects
Finasteride is a medication that works by inhibiting the activity of 5 alpha-reductase, an enzyme responsible for converting testosterone into dihydrotestosterone. This drug is commonly used to treat benign prostatic hyperplasia and male-pattern baldness.
However, like any medication, finasteride has its own set of adverse effects. Some of the most common side effects include impotence, decreased libido, ejaculation disorders, gynaecomastia, and breast tenderness. It is important to note that finasteride can also cause decreased levels of serum prostate-specific antigen.
-
This question is part of the following fields:
- Pharmacology/Therapeutics
-
-
Question 58
Correct
-
A 56-year-old male patient presents to the emergency department with a 3-day history of severe right upper quadrant pain preceded by a 2-month history of intermittent ache in the right upper quadrant. His basic observations include heart rate 115 beats/minute, respiratory rate 28 breaths/minute, blood pressure 90/55 mmHg, temperature 38.9°C, oxygen saturation 93% on air. His past medical history includes hypertension and type 2 diabetes mellitus.
WCC 14 x 109cells/L
Bilirubin 80 mg/dL
Alkaline phosphatase 377 IU/L
Alanine aminotransferase 70 U/L
Amylase 300 U/L
What is the most likely diagnosis?Your Answer: Ascending cholangitis
Explanation:The three main symptoms of Charcot’s cholangitis are fever, jaundice, and pain in the upper right quadrant. This type of cholangitis is known for causing these three symptoms, which are collectively referred to as Charcot’s triad. When there is inflammation in the gastrointestinal tract, amylase levels may be slightly elevated. While cholecystitis can lead to jaundice, it is usually not severe. On the other hand, pancreatitis typically does not cause jaundice, and amylase levels are typically much higher.
Understanding Ascending Cholangitis
Ascending cholangitis is a bacterial infection that affects the biliary tree, with E. coli being the most common culprit. This condition is often associated with gallstones, which can predispose individuals to the infection. Patients with ascending cholangitis may present with Charcot’s triad, which includes fever, right upper quadrant pain, and jaundice. However, this triad is only present in 20-50% of cases. Other common symptoms include hypotension and confusion. In severe cases, Reynolds’ pentad may be observed, which includes the additional symptoms of hypotension and confusion.
To diagnose ascending cholangitis, ultrasound is typically used as a first-line investigation to look for bile duct dilation and stones. Raised inflammatory markers may also be observed. Treatment involves intravenous antibiotics and endoscopic retrograde cholangiopancreatography (ERCP) after 24-48 hours to relieve any obstruction.
Overall, ascending cholangitis is a serious condition that requires prompt diagnosis and treatment. Understanding the symptoms and risk factors associated with this condition can help individuals seek medical attention early and improve their chances of a successful recovery.
-
This question is part of the following fields:
- Gastroenterology/Nutrition
-
-
Question 59
Correct
-
A 15-year-old student presents with low back pain that radiates to the back of their legs. They have an elevated ESR and negative serum rheumatoid factor. A spine radiograph reveals anterior squaring of the vertebrae.
What is the most probable diagnosis?Your Answer: Ankylosing spondylitis (AS)
Explanation:Ankylosing spondylitis (AS) is a type of arthritis that is characterized by morning stiffness lasting more than 30 minutes, improvement of back pain with exercise but not rest, awakening due to back pain during the second half of the night, and alternating buttock pain. It is a seronegative spondyloarthropathy, meaning that the rheumatoid factor will be negative. Radiographically, sacroiliitis is often the first abnormality seen. ESR and CRP are usually raised, and HLA-B27 testing may provide supporting evidence. Lumbar disc prolapse with sciatica, rheumatoid arthritis, spinal stenosis, and Paget’s disease of bone are other conditions that may cause similar symptoms but have different characteristics and diagnostic criteria.
-
This question is part of the following fields:
- Musculoskeletal
-
-
Question 60
Correct
-
A 50-year-old woman presents with shiny, flat-topped papules on the palmar aspect of the wrists. She is mainly bothered by the troublesome and persistent itching.
Given the likely diagnosis, which of the following is the best management?Your Answer: Topical clobetasone butyrate
Explanation:Management of Lichen Planus: Topical Clobetasone Butyrate
Lichen planus is a skin condition that can be managed with daily potent topical steroids, such as clobetasone butyrate. As the lesions improve, the potency of the steroid can be decreased. It is important to advise patients to only treat the active, itchy lesions and not the post-inflammatory hyperpigmentation to minimize side effects. These treatments can also be used on the genital skin and scalp. Sedating antihistamines may help with itching at night, but should only be used periodically. Emollients and oral antihistamines are not first-line treatments for lichen planus. Referring for a punch biopsy is not necessary unless the presentation is atypical. The characteristic histological findings of lichen planus include irregular acanthosis of the epidermis, irregular thickening of the granular layer, and compact hyperkeratosis in the center of the papule. Topical clotrimazole and dapsone are not first-line treatments for lichen planus.
-
This question is part of the following fields:
- Dermatology
-
-
Question 61
Correct
-
A 28-year-old patient presents to you with an itchy rash on both elbows that has been getting worse over the past week. Upon examination, you observe multiple flat-topped papular lesions that are polygonal and measure 5mm in diameter on the flexural surface of her elbows bilaterally. There are no other rashes on the rest of her body. What is the most probable diagnosis?
Your Answer: Lichen planus
Explanation:Understanding Lichen Planus
Lichen planus is a skin condition that is believed to be caused by an immune response, although the exact cause is unknown. It is characterized by an itchy, papular rash that typically appears on the palms, soles, genitalia, and flexor surfaces of the arms. The rash often has a polygonal shape and a distinctive white-lines pattern on the surface, known as Wickham’s striae. In some cases, new skin lesions may appear at the site of trauma, a phenomenon known as the Koebner phenomenon.
Oral involvement is common in around 50% of patients, with a white-lace pattern often appearing on the buccal mucosa. Nail changes may also occur, including thinning of the nail plate and longitudinal ridging. Lichenoid drug eruptions can be caused by certain medications, such as gold, quinine, and thiazides.
The main treatment for lichen planus is potent topical steroids. For oral lichen planus, benzydamine mouthwash or spray is recommended. In more extensive cases, oral steroids or immunosuppression may be necessary.
-
This question is part of the following fields:
- Dermatology
-
-
Question 62
Incorrect
-
A 75-year-old patient presents for a follow-up appointment after undergoing private health screening. The patient has been advised to seek medical attention regarding her thyroid function tests (TFTs).
TSH levels are at 9.2 mU/L and free thyroxine levels are at 14 pmol/L. Despite her age, the patient is currently in good health and shows no symptoms. What is the best course of action for managing her condition?Your Answer: Start levothyroxine
Correct Answer: Repeat TFTs in a few months time
Explanation:According to the guidelines recommended by NICE Clinical Knowledge Summaries, this patient with subclinical hypothyroidism should be monitored at present based on both TSH and age criteria.
Understanding Subclinical Hypothyroidism
Subclinical hypothyroidism is a condition where the thyroid-stimulating hormone (TSH) is elevated, but the levels of T3 and T4 are normal, and there are no obvious symptoms. However, there is a risk of the condition progressing to overt hypothyroidism, especially in men, with a 2-5% chance per year. This risk is further increased if thyroid autoantibodies are present.
Not all patients with subclinical hypothyroidism require treatment, and guidelines have been produced by NICE Clinical Knowledge Summaries (CKS) to help determine when treatment is necessary. If the TSH level is above 10mU/L and the free thyroxine level is within the normal range, levothyroxine may be offered. If the TSH level is between 5.5 – 10mU/L and the free thyroxine level is within the normal range, a 6-month trial of levothyroxine may be considered if the patient is under 65 years old and experiencing symptoms of hypothyroidism. For older patients, a ‘watch and wait’ strategy is often used, and asymptomatic patients may simply have their thyroid function monitored every 6 months.
In summary, subclinical hypothyroidism is a condition that requires careful monitoring and consideration of treatment options based on individual patient factors.
-
This question is part of the following fields:
- Endocrinology/Metabolic Disease
-
-
Question 63
Correct
-
An 80-year-old man comes to the clinic with painless, symmetrical swellings in his neck. He reports no other symptoms. Laboratory tests show a haemoglobin level of 10.0 g/dl and a white cell count of 23 × 109/l. A blood film reveals smear cells, with more than 60% of the cells being small mature lymphocytes. What is the probable diagnosis?
Your Answer: Chronic lymphocytic leukaemia (CLL)
Explanation:Differentiating Leukaemia and Lymphoma: Characteristics and Symptoms
Leukaemia and lymphoma are both types of blood cancer, but they have distinct characteristics and symptoms. In this context, we will discuss the characteristics and symptoms of chronic lymphocytic leukaemia (CLL), acute lymphoblastic leukaemia (ALL), chronic myeloid leukaemia (CML), Hodgkin’s lymphoma (HL), and multiple myeloma (MM).
CLL is the most common leukaemia in adults, characterized by peripheral blood lymphocytosis and uncontrolled proliferation of B cell lymphocytes in the bone marrow, lymph nodes, and splenomegaly. Patients are often asymptomatic, and CLL is often picked up incidentally.
ALL is a common leukaemia of children aged 2–5 years and is very rare in adults.
CML tends to present with more systemic, B symptoms in a slightly younger age group. A classic symptom is a massive hepatosplenomegaly. Blood film would show PMNs, basophils, and myelocytes.
HL is a possibility in this age group; however, the question asks for the ‘most likely’ diagnosis, which would be CLL as it is more common in this age group and the western world. Further investigation would be used to confirm the diagnosis.
MM is the uncontrolled proliferation of plasma cells and does not present in the way described above. Bone pain, hypercalcaemia, renal failure, and neutropenia are common presentations.
-
This question is part of the following fields:
- Haematology/Oncology
-
-
Question 64
Correct
-
Which of the following side-effects is more prevalent with atypical rather than conventional antipsychotics?
Your Answer: Weight gain
Explanation:Weight gain is a common side effect of atypical antipsychotics.
Atypical antipsychotics are now recommended as the first-line treatment for patients with schizophrenia, as per the 2005 NICE guidelines. These medications have the advantage of significantly reducing extrapyramidal side-effects. However, they can also cause adverse effects such as weight gain, hyperprolactinaemia, and in the case of clozapine, agranulocytosis. The Medicines and Healthcare products Regulatory Agency has issued warnings about the increased risk of stroke and venous thromboembolism when antipsychotics are used in elderly patients. Examples of atypical antipsychotics include clozapine, olanzapine, risperidone, quetiapine, amisulpride, and aripiprazole.
Clozapine, one of the first atypical antipsychotics, carries a significant risk of agranulocytosis and requires full blood count monitoring during treatment. Therefore, it should only be used in patients who are resistant to other antipsychotic medication. The BNF recommends introducing clozapine if schizophrenia is not controlled despite the sequential use of two or more antipsychotic drugs, one of which should be a second-generation antipsychotic drug, each for at least 6-8 weeks. Adverse effects of clozapine include agranulocytosis, neutropaenia, reduced seizure threshold, constipation, myocarditis, and hypersalivation. Dose adjustment of clozapine may be necessary if smoking is started or stopped during treatment.
-
This question is part of the following fields:
- Psychiatry
-
-
Question 65
Correct
-
A 14-year-old girl is referred to haematology due to heavy and prolonged periods that have not responded well to tranexamic acid and the combined oral contraceptive pill. Her blood tests reveal Hb of 10.3 g/dl, Plt of 239 * 109/l, WBC of 6.5 * 109/l, PT of 12.9 secs, and APTT of 37 secs. What is the probable diagnosis?
Your Answer: Von Willebrand's disease
Explanation:Understanding Von Willebrand’s Disease
Von Willebrand’s disease is a common inherited bleeding disorder that is usually passed down in an autosomal dominant manner. It behaves like a platelet disorder, with symptoms such as nosebleeds and heavy menstrual bleeding being common, while joint and muscle bleeding are rare. The disease is caused by a deficiency or abnormality in von Willebrand factor, a large glycoprotein that promotes platelet adhesion to damaged endothelium and acts as a carrier molecule for factor VIII.
There are three types of Von Willebrand’s disease. Type 1 is the most common and is characterized by a partial reduction in von Willebrand factor. Type 2 is further divided into four subtypes, each with a different abnormality in the von Willebrand factor. Type 3 is the most severe form and is caused by a total lack of von Willebrand factor, inherited in an autosomal recessive manner.
Diagnosis of Von Willebrand’s disease involves tests such as a prolonged bleeding time, APTT, factor VIII levels, and platelet aggregation with ristocetin. Management options include tranexamic acid for mild bleeding, desmopressin to raise levels of von Willebrand factor, and factor VIII concentrate. While there is no clear correlation between symptomatic presentation and type of Von Willebrand’s disease, common themes among patients include excessive mucocutaneous bleeding, bruising in the absence of trauma, and menorrhagia in females.
-
This question is part of the following fields:
- Haematology/Oncology
-
-
Question 66
Correct
-
A 49-year-old woman receives a red blood cell transfusion in the emergency department after a car accident. She develops a fever and becomes anxious after 30 minutes. The transfusion is stopped and the following observations are made: respiratory rate 21 breaths per minute, heart rate 74 bpm, saturations 98% (room air), blood pressure 125/85 mmHg, temperature 39ºC. The patient is comfortable at rest and chest auscultation reveals no wheezing. What is the most appropriate treatment for this patient's reaction?
Your Answer: Paracetamol
Explanation:Complications of Blood Product Transfusion: Understanding the Risks
Blood product transfusion can lead to various complications that can be classified into different categories. Immunological complications include acute haemolytic reactions, non-haemolytic febrile reactions, and allergic/anaphylaxis reactions. Infective complications may also arise, including the transmission of vCJD. Other complications include transfusion-related acute lung injury (TRALI), transfusion-associated circulatory overload (TACO), hyperkalaemia, iron overload, and clotting.
Non-haemolytic febrile reactions are thought to be caused by antibodies reacting with white cell fragments in the blood product and cytokines that have leaked from the blood cell during storage. On the other hand, allergic reactions to blood transfusions are caused by hypersensitivity reactions to components within the transfusion. TRALI is a rare but potentially fatal complication of blood transfusion, while TACO is a relatively common reaction due to fluid overload resulting in pulmonary oedema.
It is important to understand the risks associated with blood product transfusion and to be aware of the different types of complications that may arise. Proper management and prompt treatment are crucial in preventing further harm to the patient.
-
This question is part of the following fields:
- Haematology/Oncology
-
-
Question 67
Correct
-
A 30-year-old male presents with a bilateral high-stepping gait. He is typically healthy, works as a personal trainer, and enjoys rock climbing in his free time. During the examination, there is bilateral weakness of dorsiflexion (3/5) and slightly decreased sensation over the dorsal aspect of his feet. The compression of which nerve do you suspect is responsible for his symptoms, possibly caused by his high rock climbing boots?
Your Answer: Common fibular nerve
Explanation:Damage to the common peroneal nerve can result in weakened dorsiflexion and eversion of the foot. The nerve runs laterally through the popliteal fossa and over the neck of the fibula before entering the medial compartment of the leg. This area is susceptible to compression or injury, leading to sensory and motor impairments. In this case, the individual’s tight abseiling boots have been compressing their common peroneal nerve.
Understanding Common Peroneal Nerve Lesion
A common peroneal nerve lesion is a type of nerve injury that often occurs at the neck of the fibula. This nerve is a branch of the sciatic nerve, which divides into the tibial and common peroneal nerves. The most notable symptom of this type of nerve damage is foot drop, which is characterized by weakness or paralysis of the muscles that lift the foot.
In addition to foot drop, other symptoms of a common peroneal nerve lesion may include weakness in foot dorsiflexion and eversion, as well as the extensor hallucis longus muscle. Sensory loss may also occur over the dorsum of the foot and the lower lateral part of the leg, and there may be wasting of the anterior tibial and peroneal muscles.
Overall, understanding the symptoms of a common peroneal nerve lesion can help individuals recognize and seek treatment for this type of nerve injury. With proper care and management, it may be possible to improve symptoms and prevent further damage to the affected nerve.
-
This question is part of the following fields:
- Neurology
-
-
Question 68
Correct
-
A 45-year-old woman has noticed progressive enlargement of her hands and feet over the past two years, resulting in increasing glove and shoe size. Six months ago, a deepening of her voice was noted. Her family has observed that she snores most of the time and she reports occasional episodes of daytime sleepiness. For three months, she has had progressive blurring of vision with associated headache and dizziness. Visual acuity examination shows 20/20-2. Visual field testing shows bitemporal hemianopias.
Which of the following is the most appropriate first line investigation to confirm a diagnosis in this woman?Your Answer: Insulin-like growth factor 1 (IGF-1) measurement
Explanation:The measurement of insulin-like growth factor 1 (IGF-1) is now the preferred method for screening and monitoring suspected cases of acromegaly, replacing the oral glucose tolerance test (OGTT). IGF-1, also known as somatomedin C, is produced by the liver and plays a crucial role in childhood growth and has anabolic effects in adults. OGTT with growth hormone assay is no longer the first-line investigation for acromegaly diagnosis, but can be used as a second-line test to confirm the diagnosis if IGF-1 levels are elevated. The insulin tolerance test is used to assess pituitary and adrenal function, as well as insulin sensitivity, and is not useful for diagnosing acromegaly. Random growth hormone assay is also not helpful in diagnosing acromegaly due to the pulsatile nature of GH secretion. Elevated serum prolactin levels may also be present in up to 20% of GH-secreting pituitary adenomas, but this is not diagnostic.
-
This question is part of the following fields:
- Endocrinology/Metabolic Disease
-
-
Question 69
Incorrect
-
A 27-year-old woman comes in for her 8th week of pregnancy and reports an uncomplicated pregnancy thus far. She is currently in good health and not experiencing any symptoms. However, she expresses concern about not being vaccinated against rubella as a child due to her parents' anti-vaccine beliefs. She is aware of the potential harm rubella can cause to her developing fetus and blood tests confirm that she is not immune to the virus.
What advice should be given to her?Your Answer: She can have the MMR vaccine at 20 weeks' pregnancy
Correct Answer: She can have the MMR vaccine postnatally
Explanation:In the case of a pregnant woman who is not immune to rubella, it is recommended to offer the MMR vaccination after giving birth. Rubella can cause severe harm to the developing foetus, especially during the first 8-10 weeks of pregnancy. Although congenital rubella syndrome is now rare due to widespread MMR vaccination, there has been a resurgence of measles, mumps, and rubella outbreaks in developed countries due to the anti-vaccination movement. The woman should avoid contact with individuals who may have rubella and cannot receive the vaccine while pregnant. Referral to an obstetrician is not necessary at this time since the woman is asymptomatic and in good health. The MMR vaccine should not be administered at 20 weeks of pregnancy, and if the woman is not immune, it should be offered postnatally. If there is a suspicion of rubella based on the woman’s clinical presentation, the local Health Protection Team should be notified, but this is not necessary in this case since there is no suspicion.
Rubella and Pregnancy: Risks, Features, Diagnosis, and Management
Rubella, also known as German measles, is a viral infection caused by the togavirus. Thanks to the introduction of the MMR vaccine, it is now rare. However, if contracted during pregnancy, there is a risk of congenital rubella syndrome, which can cause serious harm to the fetus. It is important to note that the incubation period is 14-21 days, and individuals are infectious from 7 days before symptoms appear to 4 days after the onset of the rash.
The risk of damage to the fetus is highest in the first 8-10 weeks of pregnancy, with a risk as high as 90%. However, damage is rare after 16 weeks. Features of congenital rubella syndrome include sensorineural deafness, congenital cataracts, congenital heart disease (e.g. patent ductus arteriosus), growth retardation, hepatosplenomegaly, purpuric skin lesions, ‘salt and pepper’ chorioretinitis, microphthalmia, and cerebral palsy.
If a suspected case of rubella in pregnancy arises, it should be discussed immediately with the local Health Protection Unit (HPU) as type/timing of investigations may vary. IgM antibodies are raised in women recently exposed to the virus. It should be noted that it is very difficult to distinguish rubella from parvovirus B19 clinically. Therefore, it is important to also check parvovirus B19 serology as there is a 30% risk of transplacental infection, with a 5-10% risk of fetal loss.
If a woman is tested at any point and no immunity is demonstrated, they should be advised to keep away from people who might have rubella. Non-immune mothers should be offered the MMR vaccination in the post-natal period. However, MMR vaccines should not be administered to women known to be pregnant or attempting to become pregnant.
-
This question is part of the following fields:
- Reproductive Medicine
-
-
Question 70
Incorrect
-
A 60-year-old man presents with a sudden onset of vision loss in his left eye upon waking up this morning. He reports no pain in his eye. His medical history includes diabetes mellitus and hypertension. Upon fundoscopic examination, the right eye appears normal, but the left eye shows multiple retinal haemorrhages. What is the most probable diagnosis?
Your Answer: Hypertensive retinopathy
Correct Answer: Central retinal vein occlusion
Explanation:The sudden painless loss of vision and severe retinal haemorrhages observed on fundoscopy in this patient are indicative of central retinal vein occlusion. Amaurosis fugax, which is caused by atheroembolism from the carotid arteries, results in temporary vision loss that resolves within a few minutes. In contrast, this patient’s vision loss is persistent. While central retinal artery occlusion also causes acute painless vision loss, it is characterized by a loss of relative afferent pupillary defect, a cherry-red macula, and a white/pale retina on fundoscopy. Hypertensive retinopathy may cause flame-shaped haemorrhages and cotton wool spots on the retina, but it does not result in sudden vision loss.
Understanding Central Retinal Vein Occlusion
Central retinal vein occlusion (CRVO) is a possible cause of sudden, painless loss of vision. It is more common in older individuals and those with hypertension, cardiovascular disease, glaucoma, or polycythemia. The condition is characterized by a sudden reduction or loss of visual acuity, usually affecting only one eye. Fundoscopy reveals widespread hyperemia and severe retinal hemorrhages, which are often described as a stormy sunset.
Branch retinal vein occlusion (BRVO) is a similar condition that affects a smaller area of the fundus. It occurs when a vein in the distal retinal venous system is blocked, usually at arteriovenous crossings.
Most patients with CRVO are managed conservatively, but treatment may be necessary in some cases. For instance, intravitreal anti-vascular endothelial growth factor (VEGF) agents may be used to manage macular edema, while laser photocoagulation may be necessary to treat retinal neovascularization.
Overall, understanding the risk factors, features, and management options for CRVO is essential for prompt diagnosis and appropriate treatment. Proper management can help prevent further vision loss and improve the patient’s quality of life.
-
This question is part of the following fields:
- Ophthalmology
-
-
Question 71
Correct
-
A 55-year-old man, who lives alone, complains of pain in his right knee. He finds it difficult to walk long distances. A recent knee radiograph showed signs of osteoarthritis (OA). Examination revealed mild medial joint line tenderness and stable ligaments. His body mass index (BMI) is 25.
What would be the treatment of choice for this patient?Your Answer: Paracetamol with topical NSAIDs
Explanation:Management Strategies for Osteoarthritis
Osteoarthritis (OA) is a common condition that affects the joints, causing pain and stiffness. There are various management strategies for OA, including pharmacological and non-pharmacological approaches.
Paracetamol with Topical NSAIDs
The first-line management strategy for knee and hand OA is to use paracetamol with topical NSAIDs, according to the National Institute for Health and Care Excellence (NICE) guidelines.Oral NSAIDs
Oral NSAIDs should be used with caution in the elderly and those with renal disease. Topical NSAIDs are preferred in the first instance. If they are ineffective, oral NSAIDs may be used at the lowest effective dose, for the shortest period of time, and with a protein pump inhibitor co-prescribed.Oral NSAIDs with Gastric Protection
Oral NSAIDs can be given with gastric protection if topical NSAIDs plus paracetamol provide insufficient analgesia. However, it is not the first-line recommendation for relief of pain in osteoarthritis.Arthrodesis of the Knee Joint
Surgical management of OA is typically with joint replacement. Surgery may only be considered in those patients in whom non-pharmacological and pharmacological measures have proved ineffective and there is severe pain with functional limitation.Weight Loss and Physiotherapy
Weight loss and physiotherapy are part of the non-pharmacological management for OA. However, weight loss is only appropriate in those with a BMI of over 25 (overweight or obese). Physiotherapy and gentle exercise should be recommended to all patients with OA, regardless of age, pain severity, co-morbidity, or disability.Management Strategies for Osteoarthritis
-
This question is part of the following fields:
- Musculoskeletal
-
-
Question 72
Correct
-
A 35-year-old woman is reviewed. She has been drinking alcohol heavily for over 15 years but now needs to drink more to feel satisfied as well as to avoid being anxious. She works as a teacher and gave up cycling five years ago at the insistence of her husband. There is no evidence of chronic liver disease on physical examination. Assessment of her mental state reveals episodes of anxiety. She no longer socialises with friends.
How is her behaviour best categorised?Your Answer: Alcohol dependence
Explanation:Understanding Alcohol Dependence: Symptoms and Screening Tools
Alcohol dependence is a serious condition characterized by a strong compulsion to drink, withdrawal symptoms, tolerance, and loss of control over alcohol use. This vignette illustrates a classic scenario of alcohol dependence, with features of tolerance, withdrawals, neglect of other pleasures, and low mood associated with heavy chronic alcohol consumption. While depression can be a symptom of alcohol dependence, it is not the primary diagnosis.
The term alcohol abuse is being replaced by alcohol-use disorder or harmful drinking to describe patterns of alcohol use that cause physical or mental health damage. In this vignette, the woman likely has harmful use of alcohol, but the overall picture points to a diagnosis of alcohol dependence.
Withdrawal symptoms are a common feature of alcohol dependence, and the woman in this vignette would likely experience them if she suddenly stopped drinking. Social withdrawal is also an indicator of alcohol dependence, but it does not explain the entire pattern of symptoms and behavior presented.
A useful screening test for alcohol-use disorders is the CAGE questionnaire, which asks about cutting down, annoyance from others, guilt, and needing a drink first thing in the morning. Answering yes to two or more questions may indicate the presence of an alcohol-use disorder. Other screening tools include the FAST and AUDIT tests, which can be administered quickly in busy medical settings.
Overall, understanding the symptoms and screening tools for alcohol dependence is crucial for early detection and intervention.
-
This question is part of the following fields:
- Psychiatry
-
-
Question 73
Correct
-
A 67-year-old woman presents with vomiting and diarrhoea. Blood tests reveal an AKI with the following results, which were normal during her last check-up with her GP 3 weeks ago. She is given intravenous fluids and a renal ultrasound scan is scheduled.
Creatinine 180 umol/l
Urea 10 mmol/l
eGFR 25 ml/min
Which medication should be discontinued until her renal function returns to normal?Your Answer: Ramipril
Explanation:This woman is experiencing an acute kidney injury, most likely caused by dehydration leading to pre-renal failure. The function of the kidneys is determined by the glomerulus’ ability to filter blood, which is dependent on the perfusion pressure of the glomerulus. This pressure is influenced by two factors: the overall blood flow to the kidney (which is reduced in cases of dehydration and hypovolemia) and the auto-regulation of the afferent and efferent arterioles, which fine-tunes the pressure.
Prostaglandin E2 mediates the dilation of the afferent arteriole to increase blood flow, while angiotensin II mediates the constriction of the efferent arteriole to increase pressure. Non-steroidal anti-inflammatory drugs can disrupt this auto-regulation by blocking prostaglandin E2, contributing to acute kidney injury. However, oral aspirin is an exception and does not harm the kidneys. Drugs that block angiotensin II, such as ACE inhibitors like Ramipril and angiotensin receptor blockers, should be avoided during an AKI as they also disrupt auto-regulation.
In contrast, ACE inhibitors and ARBs are beneficial in chronic kidney disease due to their antihypertensive and anti-inflammatory effects. In CKD, glomerular perfusion pressures are elevated, and reducing this pressure can help prevent glomerular damage and a decline in GFR.
Angiotensin-converting enzyme (ACE) inhibitors are commonly used as the first-line treatment for hypertension and heart failure in younger patients. However, they may not be as effective in treating hypertensive Afro-Caribbean patients. These inhibitors are also used to treat diabetic nephropathy and for secondary prevention of ischaemic heart disease. The mechanism of action of ACE inhibitors is to inhibit the conversion of angiotensin I to angiotensin II. They are metabolized in the liver through phase 1 metabolism.
ACE inhibitors may cause side effects such as cough, which occurs in around 15% of patients and may occur up to a year after starting treatment. This is thought to be due to increased bradykinin levels. Angioedema may also occur up to a year after starting treatment. Hyperkalaemia and first-dose hypotension are other potential side effects, especially in patients taking diuretics. ACE inhibitors should be avoided during pregnancy and breastfeeding, and caution should be exercised in patients with renovascular disease, aortic stenosis, or hereditary or idiopathic angioedema.
Patients receiving high-dose diuretic therapy (more than 80 mg of furosemide a day) are at an increased risk of hypotension when taking ACE inhibitors. Before initiating treatment, urea and electrolytes should be checked, and after increasing the dose, a rise in creatinine and potassium may be expected. Acceptable changes include an increase in serum creatinine up to 30% from baseline and an increase in potassium up to 5.5 mmol/l. Patients with undiagnosed bilateral renal artery stenosis may experience significant renal impairment. The current NICE guidelines provide a flow chart for the management of hypertension.
-
This question is part of the following fields:
- Renal Medicine/Urology
-
-
Question 74
Incorrect
-
A 58-year-old man has been treated for many years with amlodipine for hypertension. Now this is not adequately controlling his blood pressure, and angiotensin-converting enzyme (ACE) inhibitor treatment is planned. On routine baseline blood tests, prior to commencing treatment, the estimated glomerular filtration rate (eGFR) is 49 ml/min/1.73 m2 (reference range >90 ml/min/1.73 m2).
Which of the following is the most appropriate next step in his management?Your Answer: Commence the ACE inhibitor as planned
Correct Answer: Examine the patient, and perform urinalysis
Explanation:Managing a Patient with Suspected Chronic Kidney Disease
When a patient presents with suspected chronic kidney disease (CKD), it is important to perform a thorough examination and urinalysis to confirm the diagnosis. While patients with CKD stages 1-3 may not exhibit symptoms, those in stages 4-5 may experience endocrine/metabolic derangements or disturbances in water or electrolyte balance. Anaemia is often one of the first signs of CKD, but the lack of physical findings on examination does not exclude kidney disease. Initial screening for proteinuria can be done with a standard urine dipstick, and further testing may be necessary if the test is positive. Referral to a nephrology outpatient may be necessary, depending on the severity of the CKD. ACE inhibitors should only be started once the patient’s baseline renal function has been established, and blood tests should be rechecked in 2 weeks. Immediate admission is only necessary for patients with CKD stage 5 who present with acute indications for dialytic therapy.
-
This question is part of the following fields:
- Renal Medicine/Urology
-
-
Question 75
Correct
-
A 68-year-old male is prescribed colchicine to alleviate his gout symptoms that are not responding to diclofenac. What is the most crucial side effect to caution him about?
Your Answer: Diarrhoea
Explanation:Gout is caused by chronic hyperuricaemia and is managed acutely with NSAIDs or colchicine. Urate-lowering therapy (ULT) is recommended for patients with >= 2 attacks in 12 months, tophi, renal disease, uric acid renal stones, or prophylaxis if on cytotoxics or diuretics. Allopurinol is first-line ULT, with an initial dose of 100 mg od and titrated to aim for a serum uric acid of < 300 µmol/l. Lifestyle modifications include reducing alcohol intake, losing weight if obese, and avoiding high-purine foods. Consideration should be given to stopping precipitating drugs and losartan may be suitable for patients with coexistent hypertension.
-
This question is part of the following fields:
- Musculoskeletal
-
-
Question 76
Correct
-
A 54-year-old woman comes to the clinic complaining of dizziness when she changes position in bed for the past two weeks. She describes the sensation of the room spinning around her. Upon examination, there are no abnormalities found in her ears and cranial nerves. Assuming that she has benign paroxysmal positional vertigo, what is the best course of action for management?
Your Answer: Perform Epley manoeuvre
Explanation:BPPV can be diagnosed using the Dix-Hallpike manoeuvre, while the Epley manoeuvre is used for treatment.
Understanding Benign Paroxysmal Positional Vertigo
Benign paroxysmal positional vertigo (BPPV) is a common condition that causes sudden dizziness and vertigo triggered by changes in head position. It typically affects individuals over the age of 55 and is less common in younger patients. Symptoms include vertigo triggered by movements such as rolling over in bed or looking upwards, and may be accompanied by nausea. Each episode usually lasts between 10-20 seconds and can be diagnosed through a positive Dix-Hallpike manoeuvre, which involves the patient experiencing vertigo and rotatory nystagmus.
Fortunately, BPPV has a good prognosis and often resolves on its own within a few weeks to months. Treatment options include the Epley manoeuvre, which is successful in around 80% of cases, and vestibular rehabilitation exercises such as the Brandt-Daroff exercises. While medication such as Betahistine may be prescribed, it tends to have limited value. However, it is important to note that around half of people with BPPV will experience a recurrence of symptoms 3-5 years after their initial diagnosis.
Overall, understanding BPPV and its symptoms can help individuals seek appropriate treatment and manage their condition effectively.
-
This question is part of the following fields:
- ENT
-
-
Question 77
Correct
-
An 80-year-old man presents to you with a complaint of blurred vision that has been worsening over the past 3 months. He has a medical history of type 2 diabetes and takes metformin. During the examination, you observe a shadow in the red reflex. What is the most probable diagnosis?
Your Answer: Cataract
Explanation:Understanding Cataracts: Causes, Symptoms, and Management
A cataract is a common eye condition that affects the lens of the eye, causing it to become cloudy and reducing the amount of light that reaches the retina. This can lead to blurred or reduced vision, making it difficult to see clearly. Cataracts are more common in women and tend to increase in incidence with age. While the normal ageing process is the most common cause, other factors such as smoking, alcohol consumption, trauma, diabetes, and long-term corticosteroid use can also contribute to the development of cataracts.
Symptoms of cataracts include reduced vision, faded colour vision, glare, and halos around lights. A defect in the red reflex is also a sign of cataracts. Diagnosis is typically made through ophthalmoscopy and slit-lamp examination, which can reveal the presence of a visible cataract.
In the early stages, age-related cataracts can be managed conservatively with stronger glasses or contact lenses and brighter lighting. However, surgery is the only effective treatment for cataracts and involves removing the cloudy lens and replacing it with an artificial one. Referral for surgery should be based on the presence of visual impairment, impact on quality of life, and patient choice. Complications following surgery can include posterior capsule opacification, retinal detachment, posterior capsule rupture, and endophthalmitis.
Overall, cataracts are a common and treatable eye condition that can significantly impact a person’s vision. Understanding the causes, symptoms, and management options can help individuals make informed decisions about their eye health.
-
This question is part of the following fields:
- Ophthalmology
-
-
Question 78
Correct
-
A 35-year-old woman arrives at the emergency department worried about potential exposure to chickenpox. Earlier today, she had contact with a child who had a fever, sore throat, and itchy blisters on their face. The patient is currently 20 weeks pregnant and is uncertain if she has ever had chickenpox or received the vaccine.
What is the most appropriate next step in managing this patient?Your Answer: Check maternal blood for varicella zoster antibodies
Explanation:Chickenpox exposure in pregnancy can pose risks to both the mother and fetus, including fetal varicella syndrome. Post-exposure prophylaxis (PEP) with varicella-zoster immunoglobulin (VZIG) or antivirals should be given to non-immune pregnant women, with timing dependent on gestational age. If a pregnant woman develops chickenpox, specialist advice should be sought and oral aciclovir may be given if she is ≥ 20 weeks and presents within 24 hours of onset of the rash.
-
This question is part of the following fields:
- Reproductive Medicine
-
-
Question 79
Incorrect
-
A 7-year-old girl is referred to the Paediatric Emergency Department by her General Practitioner with a 4-day history of fever.
On examination, the patient has bilateral conjunctival injection, a maculopapular rash across her trunk, and erythematous extremities. Her chest is clear and heart sounds are normal. The abdomen is soft and nontender. Her lips look cracked, and her tongue looks erythematous. She has no palpable lymphadenopathy.
Which of the following blood test results would support the likely diagnosis for this patient?
Your Answer: Elevated ESR, normal CRP
Correct Answer: Thrombocytosis
Explanation:Understanding Kawasaki Disease: Diagnosis and Blood Test Results
Kawasaki disease is a clinical diagnosis that presents with a persistent fever and at least four of the following five criteria: bilateral conjunctival injection, polymorphous rash, oral changes, oedema and erythema in hands/feet, and cervical lymphadenopathy. Thrombocytosis is a common non-specific change seen in Kawasaki disease, and blood tests such as full blood count, urea and electrolytes, liver function, lipid profile, C-reactive protein (CRP), and erythrocyte sedimentation rate (ESR) can support the diagnosis, assess severity, and monitor disease and treatment. Neutropenia is not usually associated with Kawasaki disease, and a raised white cell count with a relative neutrophilia is commonly seen. An elevated CRP with a normal ESR or an elevated ESR with a normal CRP would not be expected in Kawasaki disease, as both markers reflect acute inflammation. Kawasaki disease is associated with normocytic anaemia, but not macrocytic anaemia. It is important to arrange an echocardiogram as soon as possible to look for any initial evidence of coronary artery aneurysm, a common complication of Kawasaki disease.
-
This question is part of the following fields:
- Musculoskeletal
-
-
Question 80
Correct
-
A 25-year-old student presents to the Emergency Department with confusion and recurring fevers. He describes a flu-like illness in recent days, with myalgia and rigours every two days. He has previously been well, other than an episode of suspected malaria on a gap year in Brazil three years ago, which was felt to be successfully treated. He has not been abroad since.
On examination, he has splenomegaly, scleral icterus and a temperature of 39.1°C.
Investigations reveal the following:
Investigation Result Normal value
Haemoglobin (Hb) 95 g/l 135–175 g/l
White Cell Count (WCC) 14 × 109/l 4.0–11.0 × 109/l
Platelets (PLT) 100 × 109 150–450× 109/l
Blood film Awaited
Which of the following is the most likely causative organism?Your Answer: Plasmodium vivax
Explanation:Differential Diagnosis for a Patient with Fluctuating Pyrexia: Malaria vs. Other Causes
The patient in question is experiencing fluctuating rigours of malaria, despite not having been in a malaria-affected zone for two years. This suggests a recurrence of pre-existing malaria, with the most likely subtype being P. vivax due to its ability to lie dormant in the liver for extended periods. While dengue fever is a possibility, the history of fluctuating pyrexia is more indicative of malaria, which also causes anaemia and thrombocytopenia. P. falciparum is a reasonable differential, but less likely given the patient’s travel history. P. malariae is rare and typically presents with fevers recurring every three days, making it less likely. Yellow fever is also unlikely due to the patient’s travel timeline and lack of jaundice. Overall, malaria is the most likely cause of the patient’s symptoms.
-
This question is part of the following fields:
- Infectious Diseases
-
-
Question 81
Correct
-
A 45-year-old man with known permanent AF (atrial fibrillation) on warfarin has a fast, irregularly irregular pulse. He has no other past medical history. The ECG confirms AF with a rate of 132 beats/min. He is haemodynamically stable and well. He denies any history of palpitations, shortness of breath or syncope.
Which of the following is the most appropriate intervention?Your Answer: Bisoprolol
Explanation:Treatment Options for Atrial Fibrillation: A Comprehensive Guide
Atrial fibrillation (AF) is a common cardiac arrhythmia that requires prompt and appropriate management to prevent complications. Here are some treatment options for AF:
Rate Control: This is recommended for patients who have had AF for more than 48 hours. Beta-blockers are the first-line treatment unless there is a contraindication such as asthma. Calcium channel blockers can also be used.
Digoxin: This drug can be used as rate control if the patient cannot have beta-blockers or calcium channel blockers. However, it should only be used as a third-line treatment or as an adjunct because it has been shown to increase mortality. It is also only effective in sedentary patients.
DC Cardioversion: This can be used to treat new-onset AF if the patient has had it for less than 48 hours. It can also be considered in patients who have had it for longer than that, once they have been on stable anticoagulation for at least 3 weeks.
Flecainide: This is a class Ic antiarrhythmic drug that can be used as chemical cardioversion in new AF (<48 hours) or if a patient has been anticoagulated for >3 weeks.
Rhythm Control: Nice guidelines advise that rhythm control can be used if AF onset was <48 hours ago, but should be avoided if longer ago because it can increase the risk of stroke from an atrial thrombus. In longer cases, rate control should be used, which is with beta-blockers or rate-limiting calcium channel blockers. Digoxin can be used third line or as an adjunct. In conclusion, the appropriate treatment for AF depends on the duration of the arrhythmia, the patient’s comorbidities, and other factors. It is important to consult with a healthcare professional to determine the best course of action.
-
This question is part of the following fields:
- Cardiovascular
-
-
Question 82
Incorrect
-
A 72-year-old man undergoing evaluation in the Medical Outpatient Department for complaints of joint pain is found to have weakly positive serum antinuclear antibodies (ANAs). All his other blood tests are within normal limits.
What is the most probable cause of this patient's ANA positivity?Your Answer: Ankylosing spondylitis (AS)
Correct Answer: Age related
Explanation:Understanding the Relationship Between ANAs and Various Medical Conditions
As individuals age, the level of anti-nuclear antibodies (ANAs) in their blood tends to increase, particularly in those over 65 years old. Therefore, a weakly positive ANA sample in an older patient with normal blood results is likely due to age-related factors.
Chronic fatigue syndrome (CFS) is not associated with ANA positivity. This diagnosis is made only after ruling out all other possibilities and finding no biochemical evidence to support it.
Ankylosing spondylitis (AS) is not linked to any known antibodies. While patients with AS may have elevated levels of non-specific inflammatory markers, such as C-reactive protein and erythrocyte sedimentation rate, genetic testing for human leukocyte antigen (HLA)-B27 may aid in diagnosis.
Primary antiphospholipid (APL) antibody syndrome does not typically involve ANA positivity. If ANAs are present in a patient with APL syndrome, it suggests a secondary form of the condition associated with a connective tissue disorder. APL syndrome is usually characterized by anti-cardiolipin antibodies and abnormal clotting studies.
Myasthenia gravis, a condition characterized by fatiguability and weakness induced by repeated actions, is not related to ANAs. Instead, it is caused by antibodies targeting the nicotinic acetylcholine receptor.
-
This question is part of the following fields:
- Immunology/Allergy
-
-
Question 83
Correct
-
A 27 year old pregnant woman is currently experiencing a prolonged second stage of labour due to cephalopelvic disproportion. The midwife is aware of the potential risks to both the mother and foetus and calls for an obstetrician. The obstetrician performs a perineal incision in a mediolateral direction. What is the name of this procedure?
Your Answer: Episiotomy
Explanation:The procedure being performed is called an episiotomy, which can be done using various techniques. In this case, the medio-lateral approach is being used, which involves making a cut at either the 7 o’clock or 5 o’clock positions. The main reasons for performing this procedure are twofold. Firstly, it helps to prevent the vagina from tearing during childbirth, particularly in cases where the baby’s head is too large for the mother’s pelvis. By making a controlled incision, the risk of the tear extending towards the anus and surrounding muscles is reduced, which could lead to long-term problems such as fecal incontinence. Secondly, the episiotomy creates more space for the baby to pass through, making delivery easier and safer for both the mother and child.
Understanding Episiotomy
Episiotomy is a surgical procedure that involves making an incision in the posterior wall of the vagina and perineum during the second stage of labor. This procedure is done to make it easier for the baby to pass through the birth canal. The incision is made in the area between the vagina and anus, and it can be either midline or mediolateral.
Episiotomy is usually performed when the baby is in distress, and there is a need to speed up the delivery process. It can also be done to prevent tearing of the perineum, which can be more difficult to repair than an episiotomy. However, the procedure is not without risks, and it can lead to complications such as pain, infection, and bleeding.
In recent years, there has been a decline in the use of episiotomy, as studies have shown that it does not necessarily reduce the risk of tearing or improve healing time. Many healthcare providers now only perform episiotomy when it is medically necessary. It is important for expectant mothers to discuss the use of episiotomy with their healthcare provider and understand the risks and benefits before making a decision.
-
This question is part of the following fields:
- Reproductive Medicine
-
-
Question 84
Correct
-
A 6-month-old girl has been brought in to the Emergency Department after an episode of rectal bleeding. Her parents tell you that she appears to be suffering from abdominal pain since this morning, drawing her legs up into the fetal position, and has eaten very little, which is unlike her. She vomited about three times and then passed bloody stools. When you ask for further details, the parents tell you that the stool was jelly-like red and very slimy. The parents started weaning the child one month ago and only give her baby food.
On examination, the child has right lower abdominal tenderness and her mucous membranes look dehydrated. Her capillary refill time is four seconds and you can vaguely feel some sort of mass in her right lower abdomen.
What is the most likely diagnosis?Your Answer: Intussusception
Explanation:Common Gastrointestinal Disorders in Toddlers
Intussusception is a common gastrointestinal disorder in toddlers, typically affecting those aged 9-12 months. Symptoms include slimy or jelly-like red stools, abdominal pain, and a palpable mass or fullness. Diagnosis is made through ultrasound imaging and treatment usually involves an enema, although surgery may be necessary in complicated cases.
Pyloric stenosis is another disorder that can occur in the first few weeks of a baby’s life. It causes forceful projectile vomiting immediately after feeds and is diagnosed through ultrasound imaging. Treatment involves surgery with a pyloromyotomy.
Campylobacter-related gastroenteritis is rare in toddlers, especially considering that they typically only consume baby food.
Colorectal cancer is almost unheard of in this age group.
Hirschsprung’s disease is a congenital disorder that causes bowel obstruction, resulting in vomiting and failure to pass stools. It is typically diagnosed through a rectal biopsy and treated with surgical removal of the affected part of the bowel.
-
This question is part of the following fields:
- Paediatrics
-
-
Question 85
Incorrect
-
A 32-year-old engineer attended a business trip in France last weekend and developed a fever of up to 39°C that lasted for three days. He had associated shortness of breath and dry cough. In addition, he had loose motions for a day. His blood results showed deranged LFTs and hyponatraemia. His WBC count was 10.2 × 109/l. Bibasal consolidation was seen on his radiograph.
Which of the following would be the most effective treatment for his condition?Your Answer: Amoxicillin
Correct Answer: Clarithromycin
Explanation:Treatment options for Legionnaires’ disease
Legionnaires’ disease is a common cause of community- and hospital-acquired pneumonia, caused by Legionella pneumophila. The bacterium contaminates water containers and distribution systems, including air-conditioning systems, and can infect individuals who inhale it. Symptoms include fever, cough, dyspnoea, and systemic symptoms such as myalgia, arthralgia, diarrhoea, nausea, vomiting and neurological signs. Diagnosis is usually confirmed by urinary antigen testing. Treatment options include macrolides, such as clarithromycin, which is the preferred choice, and quinolones, such as ciprofloxacin, which are used less frequently due to a less favourable side-effect profile. Amoxicillin, cefuroxime, and flucloxacillin are not effective against Legionella pneumophila. It is important to remember that the organism does not show up on Gram staining. Outbreaks are seen in previously fit individuals staying in hotels or institutions where the shower facilities and/or the cooling system is contaminated with the organism. The incubation period is 2–10 days. A clinical clue is the presence of otherwise unexplained hyponatraemia and deranged liver function tests in a patient with pneumonia. A chest radiograph can show bibasal consolidation, sometimes with a small pleural effusion.
Treatment options for Legionnaires’ disease
-
This question is part of the following fields:
- Respiratory Medicine
-
-
Question 86
Correct
-
A 56-year-old woman presents to the emergency department complaining of right upper quadrant pain and rigors that have been ongoing for 2 days. She had previously seen her GP 6 months ago for biliary colic and was referred for an elective cholecystectomy. Upon examination, her blood work reveals elevated levels of WCC, CRP, and bilirubin. Based on these findings, what is the most probable diagnosis?
Your Answer: Ascending cholangitis
Explanation:If a patient with a history of gallstones experiences RUQ pain along with elevated inflammatory markers, it is more likely to be acute cholecystitis or cholangitis rather than biliary colic. The presence of fever and abnormal LFTs suggests ascending cholangitis, as opposed to cholecystitis, which is indicated by Charcot’s triad of RUQ pain, fever, and jaundice. Acute pancreatitis is unlikely if amylase levels are normal, and the sudden onset of symptoms makes malignancy, particularly cholangiocarcinoma, less probable.
Understanding Ascending Cholangitis
Ascending cholangitis is a bacterial infection that affects the biliary tree, with E. coli being the most common culprit. This condition is often associated with gallstones, which can predispose individuals to the infection. Patients with ascending cholangitis may present with Charcot’s triad, which includes fever, right upper quadrant pain, and jaundice. However, this triad is only present in 20-50% of cases. Other common symptoms include hypotension and confusion. In severe cases, Reynolds’ pentad may be observed, which includes the additional symptoms of hypotension and confusion.
To diagnose ascending cholangitis, ultrasound is typically used as a first-line investigation to look for bile duct dilation and stones. Raised inflammatory markers may also be observed. Treatment involves intravenous antibiotics and endoscopic retrograde cholangiopancreatography (ERCP) after 24-48 hours to relieve any obstruction.
Overall, ascending cholangitis is a serious condition that requires prompt diagnosis and treatment. Understanding the symptoms and risk factors associated with this condition can help individuals seek medical attention early and improve their chances of a successful recovery.
-
This question is part of the following fields:
- Gastroenterology/Nutrition
-
-
Question 87
Correct
-
A 50-year-old woman with a history of hypertension and hypercholesterolaemia presents with sudden shortness of breath one hour after undergoing primary percutaneous intervention for an anterior ST-elevation myocardial infarction. The procedure was successful and radial access was used. She initially appeared stable and a bedside echocardiogram showed normal left ventricular function. However, on examination, she appears unwell with diaphoresis, tachypnea, hypotension (80/42 mmHg), tachycardia (111/minute), and elevated JVP. There are no signs of peripheral oedema or deep venous thrombosis. What is the most urgent intervention that could save her life?
Your Answer: Pericardiocentesis
Explanation:Cardiac tamponade is suggested by the presence of Beck’s triad, which includes falling blood pressure, rising jugular venous pulse, and muffled heart sounds. Therefore, cardiogenic shock is unlikely as the patient underwent successful revascularization and had a normal echocardiogram post-procedure. While inotropes may provide temporary support for low blood pressure, they are not a curative option in this case. Sepsis is not the cause of hypotension as it is typically associated with a fever, bounding pulse, and warm extremities, and the jugular venous pulse would not be elevated. Intravenous antibiotics are therefore not the correct answer. Hypovolemia is also not associated with an elevated jugular venous pulse, so intravenous fluids are not the correct answer. Additionally, the use of radial access makes a retroperitoneal hematoma less likely. The correct answer is pericardiocentesis, as the clinical features suggest cardiac tamponade, which is a known complication of primary percutaneous intervention in myocardial infarction.
Cardiac tamponade is a condition where there is an accumulation of fluid in the pericardial sac, which puts pressure on the heart. This can lead to a range of symptoms, including hypotension, raised JVP, muffled heart sounds, dyspnoea, tachycardia, and pulsus paradoxus. One of the key features of cardiac tamponade is the absence of a Y descent on the JVP, which is due to limited right ventricular filling. Other diagnostic criteria include Kussmaul’s sign and electrical alternans on an ECG. Constrictive pericarditis is a similar condition, but it can be distinguished from cardiac tamponade by the presence of an X and Y descent on the JVP, the absence of pulsus paradoxus, and the presence of pericardial calcification on a chest X-ray. The management of cardiac tamponade involves urgent pericardiocentesis to relieve the pressure on the heart.
-
This question is part of the following fields:
- Cardiovascular
-
-
Question 88
Correct
-
A typically healthy 44-year-old man is hospitalized with T11/12 discitis that is complicated by a T4 to L1 epidural abscess and a left psoas abscess. Following surgery to drain the abscesses, laboratory cultures reveal the presence of Staphylococcus aureus. Furthermore, blood cultures taken upon admission grow Staphylococcus aureus after 72 hours. What is the most suitable initial investigation to identify the source of the infection, given the pathogenic organism detected?
Your Answer: Echocardiogram
Explanation:In cases of discitis caused by Staphylococcus, an echocardiogram is necessary to check for endocarditis. Staphylococcus aureus is a highly aggressive pathogen that can spread throughout the body when it enters the bloodstream. In cases of deep abscesses caused by Staphylococcus aureus, a haematogenous source of spread should be investigated, with septic emboli from endocarditis being the most common cause. An echocardiogram is necessary to check for valvular injury or vegetations in all cases of Staphylococcus aureus-positive cultures. CT imaging is useful in identifying other abscesses and foci of infection, but is unlikely to identify a primary source of haematogenous spread. HIV testing is recommended for patients with Staphylococcus aureus sepsis, but it would not identify the primary source of bacteraemia. Midstream urine is not a reliable test for identifying a primary source of Staphylococcus aureus infection. The Duke’s Criteria for Endocarditis can be used to diagnose bacterial endocarditis, with a positive blood culture for a typical organism being one major criterion. Treatment for complicated discitis typically lasts for 6-12 weeks, with the first two weeks requiring intravenous treatment. If endocarditis is diagnosed, the length of intravenous therapy and overall treatment time may be altered.
Understanding Discitis: Causes, Symptoms, Diagnosis, and Treatment
Discitis is a condition characterized by an infection in the intervertebral disc space, which can lead to serious complications such as sepsis or an epidural abscess. The most common cause of discitis is bacterial, with Staphylococcus aureus being the most frequent culprit. However, it can also be caused by viral or aseptic factors. The symptoms of discitis include back pain, pyrexia, rigors, and sepsis. In some cases, neurological features such as changing lower limb neurology may occur if an epidural abscess develops.
To diagnose discitis, imaging tests such as MRI are used due to their high sensitivity. A CT-guided biopsy may also be required to guide antimicrobial treatment. The standard therapy for discitis involves six to eight weeks of intravenous antibiotic therapy. The choice of antibiotic depends on various factors, with the most important being the identification of the organism through a positive culture, such as a blood culture or CT-guided biopsy.
Complications of discitis include sepsis and epidural abscess. Therefore, it is essential to assess the patient for endocarditis, which can be done through transthoracic echo or transesophageal echo. Discitis is usually due to haematogenous seeding of the vertebrae, which implies that the patient has had a bacteraemia, and seeding could have occurred elsewhere. Understanding the causes, symptoms, diagnosis, and treatment of discitis is crucial in managing this condition and preventing its complications.
-
This question is part of the following fields:
- Musculoskeletal
-
-
Question 89
Correct
-
A 25-year-old woman is seen by her general practitioner. She has lost 8 kg in weight; her previous weight was 70 kg, and she now weighs 60 kg. She has a fear of gaining weight, but no further symptoms are elicited. On examination, she appears underweight and her skin looks dry; there is evidence of thin, soft, unpigmented hair on her back; her blood pressure is 110/70 mmHg, and her heart rate is 65 bpm.
What is your preferred diagnosis?Your Answer: Anorexia nervosa
Explanation:Differentiating Anorexia Nervosa from Other Mental Disorders
Anorexia nervosa (AN) is a mental disorder characterized by deliberate weight loss induced and sustained by the patient. In this scenario, a woman presents with a fear of gaining weight and has lost more than 15% of her body weight, suggesting a diagnosis of AN. Other physical symptoms such as dry skin, lanugo hair, hypotension, and bradycardia help confirm the diagnosis. However, a more detailed history, a full assessment of her mental state, and clinical investigations are necessary to confirm the diagnosis and inform management.
While weight loss can also be present in other mental disorders such as generalized anxiety disorder (GAD), depression, schizophrenia, and bulimia nervosa (BN), they are not accompanied by a fear of gaining weight. Patients with GAD experience persistent anxiety that affects several aspects of their lives, while depression is characterized by a persistent feeling of sadness and hopelessness. Schizophrenia involves self-neglect and/or delusional beliefs around food, while BN is characterized by episodes of binge eating followed by purging behaviors.
It is worth noting that eating disorders have the highest mortality among all mental disorders, with AN being no exception. The excess mortality is explained by the associated physical complications and increased risk of suicide. Psychological interventions are the mainstay of treatment for all eating disorders, but antidepressants have a role in some types (e.g., BN), and a multidisciplinary approach is recommended in any case.
-
This question is part of the following fields:
- Psychiatry
-
-
Question 90
Incorrect
-
A 32-year-old female sex worker presents to the emergency department complaining of a high fever and severe headache. During the physical examination, you observe neck stiffness and mild photophobia, prompting you to perform a lumbar puncture. The results of the lumbar puncture reveal the presence of a yeast and a capsule in the CSF stained with India ink.
What is the most probable diagnosis?Your Answer: Aspergillus abscess
Correct Answer: Cryptococcal meningitis
Explanation:Cryptococcus neoformans is a yeast that has a protective capsule and requires oxygen to survive. It can thrive in both plants and animals, and when it infects humans, it causes cryptococcosis. While the infection typically affects the lungs, it can also lead to fungal meningitis and encephalitis in individuals with weakened immune systems. HIV-positive patients are particularly susceptible to this infection, and given the patient’s history as a sex worker, it’s possible that they have an undiagnosed HIV infection that has progressed to AIDS. Additionally, cryptococcus neoformans can be detected through india ink staining during a lumbar puncture.
The investigation and management of suspected bacterial meningitis are intertwined due to the potential negative impact of delayed antibiotic treatment. Patients should be urgently transferred to the hospital, and an ABC approach should be taken initially. A lumbar puncture should be delayed in certain circumstances, and IV antibiotics should be given as a priority if there is any doubt. The bloods and CSF should be tested for various parameters, and prophylaxis should be offered to households and close contacts of patients affected with meningococcal meningitis.
-
This question is part of the following fields:
- Infectious Diseases
-
-
Question 91
Correct
-
A 32-year-old woman complains of pressure-type headache and brief visual disturbance upon standing.
What is the most indicative feature that supports the diagnosis of idiopathic intracranial hypertension (IIH)?Your Answer: An enlarged blind spot and constriction of the visual field
Explanation:Understanding the Symptoms of Idiopathic Intracranial Hypertension (IIH)
Idiopathic Intracranial Hypertension (IIH) is a headache syndrome that is characterized by raised cerebrospinal fluid pressure in the absence of an intracranial mass lesion or ventricular dilatation. While IIH is associated with visual field defects, reduced visual acuity is not a common presenting feature. Instead, an enlarged blind spot and constriction of the visual field are the classic findings in a patient with papilloedema. Additionally, IIH does not typically present with motor weakness or a raised erythrocyte sedimentation rate (ESR).
It is important to note that a past history of deep venous thrombosis or lateralized motor weakness would raise suspicions about the possibility of cranial venous thrombosis, which can also cause raised intracranial pressure and papilloedema. Reduced visual acuity, on the other hand, is more consistent with an optic nerve lesion such as optic neuritis.
In summary, understanding the symptoms of IIH can help healthcare professionals differentiate it from other conditions and provide appropriate treatment.
-
This question is part of the following fields:
- Neurology
-
-
Question 92
Incorrect
-
Migraine can be a debilitating condition that affects many people, but there is no one-size-fits-all solution for managing it. Which of the following is the best statement about migraine.
Your Answer: Vasoconstriction of cerebral blood vessels is characteristic of migraine
Correct Answer: Over half of all patients have their first attack before the age of 20
Explanation:Understanding Migraines: Facts and Diagnostic Criteria
Migraines are a common neurological disorder that affects people of all ages. Here are some important facts to know about migraines:
– The first attack of migraine often occurs in childhood or teenage years, with over half of all patients experiencing their first attack before the age of 20.
– Migraine attacks can last for a few hours to several days, with the International Headache Society diagnostic criteria requiring at least five episodes of headache lasting 4-72 hours.
– While aura is estimated to accompany headache in only a quarter to a third of patients, over half of all patients experience aura before the headache.
– Migraine is classically described as a unilateral, pulsating headache, but subsequent migraines can affect the same side or be bilateral.
– The release of vasogenic amines from blood vessel walls, accompanied by pulsatile distension, is believed to be responsible for migrainous attacks.
– A good history is important in diagnosing migraines, as patients may self-diagnose and overlook other factors such as combined oral contraception.In summary, migraines are a complex neurological disorder that can have a significant impact on a person’s quality of life. Understanding the facts and diagnostic criteria can help with proper diagnosis and management of this condition.
-
This question is part of the following fields:
- Neurology
-
-
Question 93
Correct
-
A 68-year-old man who is a heavy smoker presents to his General Practitioner with shortness of breath and facial flushing.
On examination, you notice some facial swelling. You suspect a bronchial neoplasm with potential superior vena cava obstruction (SVCO) as a consequence of this.
Which of the following signs is most likely to be seen in this patient?Your Answer: Venous dilatation over the anterior chest wall
Explanation:Clinical Signs and Symptoms of Bronchial Neoplasm and SVCO
Bronchial neoplasm is highly likely in a patient presenting with venous dilatation over the anterior chest wall. The presence of facial swelling should alert healthcare professionals to the possibility of superior vena cava obstruction (SVCO), which can cause dilated subcutaneous veins, tissue edema, and shortness of breath. An SVCO is an oncological emergency that requires prompt treatment with steroids and diuretics. Lung carcinoma is the most common cause of SVCO, but it can also be caused by lymphomas and other types of cancer.
Other clinical signs and symptoms that may indicate lung cancer include expiratory wheeze, supraclavicular or cervical lymphadenopathy, finger clubbing, and cranial nerve palsy. However, these signs and symptoms are non-specific and may also be present in other chronic diseases. It is important to consider the patient’s overall clinical picture and perform appropriate diagnostic tests to confirm the diagnosis and determine the underlying cause of the symptoms.
-
This question is part of the following fields:
- Haematology/Oncology
-
-
Question 94
Correct
-
A middle-aged man presents with a round, slowly enlarging erythema on his thigh. He also complains of joint discomfort and fatigue. Lyme disease is suspected.
Which of the following is the most appropriate laboratory test to confirm this diagnosis?
Select the SINGLE most appropriate laboratory test from the list below.Your Answer: Anti-Borrelia burgdorferi titre
Explanation:Diagnostic Tests for Lyme Disease: Understanding the Results
Lyme disease is a common illness caused by the spirochaete B. burgdorferi, transmitted to humans via tick bites. Serologic testing is the most frequently used diagnostic tool, but false positives and negatives are common. The enzyme immunoassay (EIA) or enzyme-linked immunosorbent assay (ELISA) is the first step, followed by a western blot if necessary. However, serologic results cannot distinguish active from inactive disease. Antinuclear antibodies and rheumatoid factor test results are negative in B. burgdorferi infection. The erythrocyte sedimentation rate is usually elevated but is not specific to detect infection. Culture of joint fluids can rule out gout and pseudogout, but detection of B. burgdorferi DNA in synovial fluid is not reliable. Blood cultures are impractical. Understanding the limitations of these tests is crucial for accurate diagnosis and treatment of Lyme disease.
-
This question is part of the following fields:
- Infectious Diseases
-
-
Question 95
Correct
-
The parents of a 15-month-old boy visit their GP with concerns about his eyes. They have noticed that in some photos there is no 'red eye' on the right side. Upon examination, the boy is found to have an esotropic strabismus and a loss of the red-reflex in the right eye. There is a family history of a grandparent who had an enucleation as a child.
What is the probable diagnosis?Your Answer: Retinoblastoma
Explanation:The absence of the red-reflex may be a symptom of a congenital cataract, but this condition is typically identified at birth or during routine infant screenings. Additionally, a congenital cataract would not account for the familial history of enucleation.
Retinoblastoma is a prevalent type of eye cancer that is commonly found in children, with an average age of diagnosis at 18 months. It is caused by a loss of function of the retinoblastoma tumor suppressor gene on chromosome 13, which is inherited in an autosomal dominant pattern. About 10% of cases are hereditary. The most common presenting symptom is the absence of red-reflex, which is replaced by a white pupil (leukocoria). Other possible features include strabismus and visual problems.
When it comes to managing retinoblastoma, enucleation is not the only option. Depending on how advanced the tumor is, other treatment options include external beam radiation therapy, chemotherapy, and photocoagulation. The prognosis for retinoblastoma is excellent, with over 90% of patients surviving into adulthood.
-
This question is part of the following fields:
- Paediatrics
-
-
Question 96
Incorrect
-
What is the recommended next step in managing the blood pressure of a 42 year old woman with a history of depression and a recent paracetamol overdose who has a manual blood pressure reading of 165/85 mmHg?
Your Answer: Start ramipril
Correct Answer: Offer ambulatory blood pressure monitoring
Explanation:The National Institute for Clinical Excellence updated its guideline for hypertension management in 2011, placing emphasis on the use of ambulatory blood pressure monitoring (ABPM) to confirm hypertension in individuals with elevated clinic readings. ABPM involves taking two measurements per hour during waking hours and using the average of at least 14 measurements to confirm a diagnosis of hypertension. Secondary causes of hypertension should be investigated in patients under 40 without traditional risk factors, those with other symptoms of secondary causes, and those with resistant hypertension. Hyperaldosteronism is the most common cause of secondary hypertension, and a trial of spironolactone may be used for both therapeutic and diagnostic purposes. Drug treatment for essential hypertension involves ACE inhibitors for those under 55 and calcium channel blockers for those over 55 or of black African or Caribbean origin. Step 2 involves using both ACE inhibitors and calcium channel blockers, while step 3 adds a thiazide-like diuretic. Further diuretics, beta-blockers, or alpha blockers may be considered in step 4, with expert advice sought. For a more detailed explanation, refer to the provided link.
NICE released updated guidelines in 2019 for the management of hypertension, building on previous guidelines from 2011. These guidelines aimed to classify hypertension into stages and recommend the use of ambulatory blood pressure monitoring (ABPM) and home blood pressure monitoring (HBPM) to accurately diagnose hypertension. This is important because some patients experience white coat hypertension, where their blood pressure rises in a clinical setting, leading to potential overdiagnosis of hypertension. ABPM and HBPM allow for a more accurate assessment of a patient’s overall blood pressure and can prevent overdiagnosis.
NICE recommends measuring blood pressure in both arms when considering a diagnosis of hypertension and repeating measurements if there is a difference of more than 20 mmHg between arms. If the blood pressure is >= 140/90 mmHg, NICE suggests offering ABPM or HBPM to confirm the diagnosis. If the blood pressure is >= 180/120 mmHg, referral for specialist assessment is recommended if there are signs of retinal haemorrhage or papilloedema or life-threatening symptoms. If target organ damage is identified, antihypertensive drug treatment may be started immediately.
ABPM involves taking at least 2 measurements per hour during the person’s usual waking hours and using the average value of at least 14 measurements. If ABPM is not tolerated, HBPM should be offered. HBPM involves taking two consecutive measurements at least 1 minute apart, twice daily for at least 4 days, and using the average value of all remaining measurements.
Interpreting the results of ABPM/HBPM is important for determining treatment. If the average blood pressure is >= 135/85 mmHg (stage 1 hypertension), treatment may be considered for patients under 80 years of age with target organ damage, established cardiovascular disease, renal disease, diabetes, or a 10-year cardiovascular risk equivalent to 10% or greater. In 2019, NICE also recommended considering antihypertensive drug treatment for adults under 60 with stage 1 hypertension and an estimated 10-year risk below 10%. If the average blood pressure is >= 150/95 mmHg (stage 2 hypertension), drug treatment should be offered regardless of age.
-
This question is part of the following fields:
- Cardiovascular
-
-
Question 97
Incorrect
-
A 20-year-old woman presents with a 4-day history of cough, headache, fever and joint pains. Blood tests show the presence of raised antibody titres and the presence of cold agglutinins. A diagnosis of Mycoplasma pneumoniae infection is made.
Which of the following drugs would you prescribe as first-line treatment for this patient?Your Answer: Co-trimoxazole
Correct Answer: Clarithromycin
Explanation:Treatment options for Mycoplasma pneumoniae infection
Mycoplasma pneumoniae is a bacterium that causes atypical pneumonia and is transmitted through respiratory droplets. The symptoms vary but can include fever, malaise, myalgia, headache, and a rash. Diagnosis is usually confirmed with serology, and treatment typically involves a macrolide antibiotic such as clarithromycin for at least 10-14 days. Penicillin and other beta-lactam antibiotics are ineffective as Mycoplasma pneumoniae lacks a cell wall. Tetracycline can be used but macrolides are preferred due to a better side-effect profile. Rifampicin is mostly limited to the treatment of tuberculosis and leprosy, while co-trimoxazole is not indicated for Mycoplasma pneumoniae infection. Extrapulmonary involvement is possible and may suggest the diagnosis in a patient presenting with pneumonia. A chest radiograph is non-specific and typically shows a reticulonodular or patchy consolidation pattern.
-
This question is part of the following fields:
- Respiratory Medicine
-
-
Question 98
Incorrect
-
A 55-year-old diabetic female patient comes in with bilateral erythematous lesions on her shins that have been present for four months. The lesions are surrounded by telangiectasia. What is the probable diagnosis?
Your Answer: Erythema nodosum
Correct Answer: Necrobiosis lipoidica
Explanation:There is no association between erythema nodosum and telangiectasia in the surrounding area.
Skin Disorders Linked to Diabetes
Diabetes mellitus is a chronic metabolic disorder that affects various organs in the body, including the skin. Several skin disorders are associated with diabetes, including necrobiosis lipoidica, infections such as candidiasis and staphylococcal, neuropathic ulcers, vitiligo, lipoatrophy, and granuloma annulare. Necrobiosis lipoidica is characterized by shiny, painless areas of yellow, red, or brown skin, typically on the shin, and is often associated with surrounding telangiectasia. Infections such as candidiasis and staphylococcal can also occur in individuals with diabetes. Neuropathic ulcers are a common complication of diabetes, and vitiligo and lipoatrophy are also associated with the condition. Granuloma annulare is a papular lesion that is often slightly hyperpigmented and depressed centrally, but recent studies have not confirmed a significant association between diabetes mellitus and this skin disorder. It is important for individuals with diabetes to be aware of these potential skin complications and to seek medical attention if they notice any changes in their skin.
-
This question is part of the following fields:
- Dermatology
-
-
Question 99
Correct
-
Sophie, 16, has come to her doctor's office to ask for the combined oral contraceptive pill (COCP). As per the guidelines of the Faculty of Sexual and Reproductive Healthcare (FSRH), what is an absolute contraindication for the COCP?
Your Answer: Migraine with aura
Explanation:The FSRH uses a scale of 1 to 4 to categorize risk factors for contraceptive methods. A rating of 1 indicates no restrictions on use, while a rating of 4 indicates a condition that poses an unacceptable risk if the contraceptive method is used. Migraine with aura is the only absolute contraindication among the answer options. Ratings of 2 and 3 indicate that the advantages and risks of the contraceptive method should be carefully considered and evaluated by a clinical expert.
The decision to prescribe the combined oral contraceptive pill is now based on the UK Medical Eligibility Criteria (UKMEC), which categorizes potential contraindications and cautions on a four-point scale. UKMEC 1 indicates no restrictions for use, while UKMEC 2 suggests that the benefits outweigh the risks. UKMEC 3 indicates that the disadvantages may outweigh the advantages, and UKMEC 4 represents an unacceptable health risk. Examples of UKMEC 3 conditions include controlled hypertension, a family history of thromboembolic disease in first-degree relatives under 45 years old, and current gallbladder disease. Examples of UKMEC 4 conditions include a history of thromboembolic disease or thrombogenic mutation, breast cancer, and uncontrolled hypertension. Diabetes mellitus diagnosed over 20 years ago is classified as UKMEC 3 or 4 depending on severity. In 2016, breast feeding between 6 weeks and 6 months postpartum was changed from UKMEC 3 to UKMEC 2.
-
This question is part of the following fields:
- Reproductive Medicine
-
-
Question 100
Correct
-
A 32-year-old female presents to her GP with complaints of weight gain, hair thinning, fatigue, and dry skin. What is the most probable reason for her symptoms?
Your Answer: Hypothyroidism
Explanation:Differential Diagnosis of Endocrine Disorders: Symptoms and Treatment Options
Hypothyroidism, adrenal insufficiency, Cushing syndrome, primary hypoparathyroidism, and secondary hypoparathyroidism are all endocrine disorders that can present with various symptoms. Hypothyroidism may cause cerebellar ataxia, myxoedema, and congestive cardiac failure, and is treated with replacement of thyroid hormone. Adrenal insufficiency may cause tiredness, weakness, and postural hypotension, among other symptoms. Cushing syndrome may present with central obesity, skin and muscle atrophy, and osteoporosis. Primary hypoparathyroidism may cause hypocalcaemia symptoms, while secondary hypoparathyroidism may also present with hypocalcaemia symptoms. Treatment options vary depending on the specific disorder.
-
This question is part of the following fields:
- Endocrinology/Metabolic Disease
-
00
Correct
00
Incorrect
00
:
00
:
00
Session Time
00
:
00
Average Question Time (
Secs)