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Question 1
Incorrect
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What is the likelihood of a 44-year-old mother having a child with Down's syndrome?
Your Answer: 1 in 500
Correct Answer: 1 in 50
Explanation:The risk of Down’s syndrome is 1 in 1,000 at the age of 30, and this risk decreases by a factor of 3 for every 5 years.
Down’s Syndrome: Epidemiology and Genetics
Down’s syndrome is a genetic disorder that occurs when there is an extra copy of chromosome 21. The risk of having a child with Down’s syndrome increases with maternal age. At 20 years old, the risk is 1 in 1,500, but by 45 years old, the risk increases to 1 in 50 or greater. To remember this, one can start with a risk of 1/1,000 at 30 years old and divide the denominator by 3 for every extra 5 years of age.
There are three main types of Down’s syndrome: nondisjunction, Robertsonian translocation, and mosaicism. Nondisjunction accounts for 94% of cases and occurs when the chromosomes fail to separate properly during cell division. The risk of recurrence is 1 in 100 if the mother is under 35 years old. Robertsonian translocation occurs when part of chromosome 21 attaches to another chromosome, usually chromosome 14. This accounts for 5% of cases and has a higher risk of recurrence if the mother or father is a carrier. Mosaicism accounts for 1% of cases and occurs when there are two genetically different populations of cells in the body.
In summary, Down’s syndrome is a genetic disorder that is more common with increasing maternal age. The risk of recurrence depends on the type of Down’s syndrome and whether the parents are carriers. It is important for individuals to understand the genetics and epidemiology of Down’s syndrome to make informed decisions about family planning.
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This question is part of the following fields:
- Paediatrics
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Question 2
Incorrect
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Sarah is a 44-year-old hairdresser who contacts her GP due to a 2-day history of cough and fever. Her Covid-19 test is negative and she does not sound breathless on the phone. Sarah has been taking paracetamol regularly but despite this, she is still feeling feverish; she has recorded her temperature as 37.8ºC. She has a past medical history of eczema, gilbert's syndrome and adrenal insufficiency. She takes hydrocortisone 15 mg in the morning and 10mg at lunchtime, and also takes fludrocortisone 200 micrograms once a day.
What is the most appropriate management plan for Sarah?Your Answer: Advise the patient to call 999 for admission
Correct Answer: Double the dose of his hydrocortisone
Explanation:To manage an Addison’s patient with an intercurrent illness, it is recommended to double the dose of their glucocorticoids, specifically hydrocortisone, while keeping the fludrocortisone dose the same. This is because the patient’s fever >37.5 indicates a moderate intercurrent illness. Continuing paracetamol regularly is not the main priority in this situation. Advising the patient to call 999 for admission is unnecessary unless there are severe symptoms such as vomiting or persistent diarrhea. Doubling the dose of fludrocortisone is not recommended as it is a mineralocorticoid with weak glucocorticoid activity, and increasing the glucocorticoid is necessary to mimic a stress response.
Addison’s disease is a condition that requires patients to undergo both glucocorticoid and mineralocorticoid replacement therapy. This treatment usually involves taking a combination of hydrocortisone and fludrocortisone. Hydrocortisone is typically given in 2 or 3 divided doses, with patients requiring 20-30 mg per day, mostly in the first half of the day. Patient education is crucial, and it is essential to emphasize the importance of not missing glucocorticoid doses. Additionally, patients should consider wearing MedicAlert bracelets and steroid cards, and they should be provided with hydrocortisone for injection with needles and syringes to treat an adrenal crisis.
During an intercurrent illness, it is crucial to manage the glucocorticoid dose properly. In simple terms, the glucocorticoid dose should be doubled, while the fludrocortisone dose should remain the same. The Addison’s Clinical Advisory Panel has produced guidelines that detail specific scenarios, and patients should refer to these guidelines for more information. It is essential to discuss how to adjust the glucocorticoid dose during an intercurrent illness with a healthcare professional. Proper management of Addison’s disease is crucial to ensure that patients can lead healthy and fulfilling lives.
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This question is part of the following fields:
- Infectious Diseases
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Question 3
Correct
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A 59 year old man with a history of aortic stenosis presents to his cardiology clinic with complaints of worsening shortness of breath and fainting episodes. His recent ECHO reveals a mean gradient of 45 mmHg and mild aortic regurgitation, while his ECG shows left ventricular hypertrophy, left bundle branch block, and a prolonged PR interval. What factor is most indicative of the need for valve replacement surgery?
Your Answer: Presence of symptoms
Explanation:Aortic valve replacement is typically recommended for patients with severe aortic stenosis who are experiencing symptoms such as dyspnea, chest pain, and syncope. Without treatment, these symptoms can lead to a mortality rate of 2-3 years. However, the decision to perform valve replacement on asymptomatic patients is a topic of debate.
Aortic Stenosis: Symptoms, Causes, and Management
Aortic stenosis is a condition characterized by the narrowing of the aortic valve, which can lead to various symptoms. These symptoms include chest pain, dyspnea, syncope, and a characteristic ejection systolic murmur that radiates to the carotids. Severe aortic stenosis can also cause a narrow pulse pressure, slow rising pulse, delayed ESM, soft/absent S2, S4, thrill, and left ventricular hypertrophy or failure. The most common causes of aortic stenosis are degenerative calcification in older patients and bicuspid aortic valve in younger patients.
If a patient is asymptomatic, observation is usually recommended. However, if the patient is symptomatic or has a valvular gradient greater than 40 mmHg with features such as left ventricular systolic dysfunction, valve replacement is necessary. Surgical AVR is the preferred treatment for young, low/medium operative risk patients, while TAVR is used for those with a high operative risk. Balloon valvuloplasty may be used in children without aortic valve calcification and in adults with critical aortic stenosis who are not fit for valve replacement.
In summary, aortic stenosis is a condition that can cause various symptoms and requires prompt management to prevent complications. The causes of aortic stenosis vary, and treatment options depend on the patient’s age, operative risk, and overall health.
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This question is part of the following fields:
- Cardiovascular
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Question 4
Correct
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A 28-year-old pregnant woman presents at 34 weeks gestation with a blood pressure reading of 175/105 mmHg and 3+ proteinuria. She is started on magnesium sulphate and labetalol. The patient reports decreased foetal movements. Upon examination, a cardiotocogram reveals late decelerations and a foetal heart rate of 90 beats/minute. What is the next course of action in managing this situation?
Your Answer: Emergency caesarian section
Explanation:Pre-eclampsia can be diagnosed based on the presence of high levels of protein in the urine and hypertension. To prevent the development of eclampsia, magnesium sulphate is administered, while labetalol is used to manage high blood pressure. If a cardiotocography (CTG) shows late decelerations and foetal bradycardia, this is a concerning sign and may necessitate an emergency caesarean section. Induction would not be recommended if the CTG is abnormal.
Cardiotocography (CTG) is a medical procedure that measures pressure changes in the uterus using either internal or external pressure transducers. It is used to monitor the fetal heart rate, which normally ranges between 100-160 beats per minute. There are several features that can be observed during a CTG, including baseline bradycardia (heart rate below 100 beats per minute), which can be caused by increased fetal vagal tone or maternal beta-blocker use. Baseline tachycardia (heart rate above 160 beats per minute) can be caused by maternal pyrexia, chorioamnionitis, hypoxia, or prematurity. Loss of baseline variability (less than 5 beats per minute) can be caused by prematurity or hypoxia. Early deceleration, which is a decrease in heart rate that starts with the onset of a contraction and returns to normal after the contraction, is usually harmless and indicates head compression. Late deceleration, on the other hand, is a decrease in heart rate that lags behind the onset of a contraction and does not return to normal until after 30 seconds following the end of the contraction. This can indicate fetal distress, such as asphyxia or placental insufficiency. Variable decelerations, which are independent of contractions, may indicate cord compression.
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This question is part of the following fields:
- Reproductive Medicine
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Question 5
Correct
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A 64-year-old man is scheduled for a follow-up after a positive faecal occult blood test as part of the national screening programme. While discussing colonoscopy, he inquires about the percentage of patients with a positive faecal occult blood test who have colorectal cancer. What is the most precise response?
Your Answer: 5 - 15%
Explanation:The likelihood of having an adenoma increases with a positive result on a faecal occult blood test.
Colorectal Cancer Screening: Faecal Immunochemical Test (FIT)
Colorectal cancer is often developed from adenomatous polyps. Screening for this type of cancer has been proven to reduce mortality by 16%. The NHS offers a home-based screening programme called Faecal Immunochemical Test (FIT) to older adults. A one-off flexible sigmoidoscopy was trialled in England for people aged 55 years, but it was abandoned in 2021 due to the inability to recruit enough clinical endoscopists, which was exacerbated by the COVID-19 pandemic. The trial, partly funded by Cancer Research UK, showed promising early results, and it remains to be seen whether flexible sigmoidoscopy will be used as part of a future bowel screening programme.
Faecal Immunochemical Test (FIT) Screening:
The NHS now has a national screening programme that offers screening every two years to all men and women aged 60 to 74 years in England and 50 to 74 years in Scotland. Patients aged over 74 years may request screening. Eligible patients are sent FIT tests through the post. FIT is a type of faecal occult blood (FOB) test that uses antibodies that specifically recognise human haemoglobin (Hb). It is used to detect and quantify the amount of human blood in a single stool sample. FIT has advantages over conventional FOB tests because it only detects human haemoglobin, as opposed to animal haemoglobin ingested through diet. Only one faecal sample is needed compared to the 2-3 for conventional FOB tests. While a numerical value is generated, this is not reported to the patient or GP. Instead, they will be informed if the test is normal or abnormal. Patients with abnormal results are offered a colonoscopy. At colonoscopy, approximately 5 out of 10 patients will have a normal exam, 4 out of 10 patients will be found to have polyps that may be removed due to their premalignant potential, and 1 out of 10 patients will be found to have cancer. -
This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 6
Incorrect
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You are evaluating a 23-year-old man who has just been diagnosed with type 1 diabetes mellitus. He works as a software engineer and has no other medical conditions. What should be his initial target for HbA1c?
Your Answer: 52 mmol/mol
Correct Answer: 48 mmol/mol
Explanation:Managing Type 1 Diabetes: NICE Guidelines
The management of type 1 diabetes is a complex process that involves the collaboration of various healthcare professionals. It is crucial to monitor the condition regularly as it can reduce life expectancy by 13 years and lead to micro and macrovascular complications. In 2015, NICE released guidelines on the diagnosis and management of type 1 diabetes, which provide valuable information for clinicians caring for patients with this condition.
One of the key recommendations is to monitor HbA1c levels every 3-6 months, with a target of 48 mmol/mol (6.5%) or lower for adults. However, other factors such as daily activities, comorbidities, and history of hypoglycemia should also be considered. Self-monitoring of blood glucose is also essential, with a minimum of four tests per day, including before meals and bedtime. Blood glucose targets should be between 5-7 mmol/l on waking and 4-7 mmol/l before meals at other times of the day.
NICE recommends multiple daily injection basal-bolus insulin regimens as the preferred choice for adults with type 1 diabetes, rather than twice-daily mixed insulin regimens. Rapid-acting insulin analogues should be used before meals instead of rapid-acting soluble human or animal insulins. Metformin may also be considered if the patient’s BMI is 25 kg/m² or higher.
In summary, managing type 1 diabetes requires a comprehensive approach that considers various factors. NICE guidelines provide a useful framework for clinicians to ensure optimal care for their patients with type 1 diabetes.
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This question is part of the following fields:
- Endocrinology/Metabolic Disease
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Question 7
Incorrect
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A 6-month-old boy is brought to the emergency department with a 24-hour history of cough and wheeze, following a week of mild fever and coryzal symptoms. The infant appears otherwise healthy and has no significant medical history. Upon respiratory examination, diffuse wheezing is noted. Vital signs reveal:
Respiratory rate 52/min
Blood pressure 92/54 mmHg
Temperature 38.2ºC
Heart rate 120 bpm
Oxygen saturation 96% on room air
What is the most appropriate course of action for managing this infant's symptoms?Your Answer: Dexamethasone
Correct Answer: Supportive management only
Explanation:If the patient’s respiratory distress worsened or their feeding was impacted, they would be admitted. It is important to note that amoxicillin is not effective in treating bronchiolitis, but may be used for uncomplicated community-acquired pneumonia or acute otitis media. Dexamethasone is commonly used for croup, but this diagnosis is unlikely as the patient does not have a barking cough, hoarse voice, or inspiratory stridor. Inhaled racemic adrenaline is also used for croup. Nebulised salbutamol is not necessary for this patient as they are stable and require only supportive management.
Bronchiolitis is a condition where the bronchioles become inflamed, and it is most commonly caused by respiratory syncytial virus (RSV). This virus is responsible for 75-80% of cases, with other causes including mycoplasma and adenoviruses. Bronchiolitis is most prevalent in infants under one year old, with 90% of cases occurring in those aged 1-9 months. The condition is more serious in premature babies, those with congenital heart disease or cystic fibrosis. Symptoms include coryzal symptoms, dry cough, increasing breathlessness, and wheezing. Hospital admission is often necessary due to feeding difficulties associated with increasing dyspnoea.
Immediate referral is recommended if the child has apnoea, looks seriously unwell, has severe respiratory distress, central cyanosis, or persistent oxygen saturation of less than 92% when breathing air. Clinicians should consider referral if the child has a respiratory rate of over 60 breaths/minute, difficulty with breastfeeding or inadequate oral fluid intake, or clinical dehydration. Immunofluorescence of nasopharyngeal secretions may show RSV, and management is largely supportive. Humidified oxygen is given via a head box if oxygen saturations are persistently low, and nasogastric feeding may be necessary if children cannot take enough fluid/feed by mouth. Suction may also be used for excessive upper airway secretions. NICE released guidelines on bronchiolitis in 2015 for more information.
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This question is part of the following fields:
- Paediatrics
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Question 8
Correct
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A 6-year-old girl was discovered to have increasing trouble getting up from the ground and climbing stairs.
What is the most probable diagnosis?
Your Answer: Duchenne muscular dystrophy (DMD)
Explanation:Understanding Duchenne Muscular Dystrophy: A Brief Overview
Duchenne muscular dystrophy (DMD) is a genetic disorder that affects approximately 1 in 3500 males. It is caused by the absence of the dystrophin gene, which leads to progressive muscle weakness and wasting.
Symptoms of DMD typically appear in early childhood and include delayed motor milestones, difficulty running, hypertrophy of calf muscles, and weakness in the lower extremities. One classic sign of DMD is a positive Gowers’ sign, where a child uses their upper extremities to help themselves stand up from the floor by first rising to stand on their arms and knees, then walking their hands up their legs to stand upright.
It is important to note that DMD is an X-linked recessive disorder, meaning that it primarily affects males. Females can be carriers of the gene mutation but are typically asymptomatic.
While there is currently no cure for DMD, there are treatments available to manage symptoms and improve quality of life. Early diagnosis and intervention are crucial for maximizing outcomes and improving long-term prognosis.
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This question is part of the following fields:
- Paediatrics
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Question 9
Incorrect
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A 4-year-old girl is brought to the clinic with a history of fever with chills, vomiting, abdominal discomfort and loose stools for the past three days. Urine examination reveals the presence of white blood cells.
What is a notable characteristic of urinary tract infections (UTIs) in young children?Your Answer: There is commonly poor containment of infection within the bladder.
Correct Answer: Diarrhoea can be a presenting feature
Explanation:Understanding Urinary Tract Infections in Children
Urinary tract infections (UTIs) are common in children and can present with a variety of symptoms. In older children, diarrhoea with or without mucus may be a presenting symptom, especially with E. coli infection. While amoxicillin is a commonly used antibiotic, current guidelines recommend trimethoprim or nitrofurantoin for lower UTIs and co-amoxiclav for upper UTIs.
Anatomical abnormalities of the urinary tract increase a child’s susceptibility to UTIs, but they are not present in the majority of cases. Imaging studies are not necessary for infants and children with a first episode of cystitis or a first febrile UTI who respond well to treatment and have a normal voiding pattern. Ultrasonography is the preferred imaging study for children with UTIs.
Escherichia coli is the most common organism isolated in paediatric UTIs, but other organisms such as fungi and viruses can also cause infection. Poor containment of infection is more common in infants younger than 2 months, and UTIs can spread to the kidneys and bloodstream if left untreated.
Understanding the symptoms and treatment options for UTIs in children is important for prompt diagnosis and management.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 10
Incorrect
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A 35-year-old woman is concerned about her risk of developing ovarian cancer due to a family history of the disease. She wants to learn more about screening options available in the UK.
Which of the following statements is correct?Your Answer: Screening is offered to all women after 50 with 3 yearly measuring of Ca125 levels
Correct Answer: There is currently no screening programme for ovarian cancer
Explanation:Currently, there is no dependable screening test for detecting ovarian cancer in its early stages. However, women, especially those over 50 years old, who experience persistent symptoms such as abdominal bloating, early satiety, loss of appetite, pelvic or abdominal pain, and increased urinary urgency or frequency should be suspected of having ovarian cancer and should undergo further tests.
Ovarian cancer is a common malignancy in women, ranking fifth in frequency. It is most commonly diagnosed in women over the age of 60 and has a poor prognosis due to late detection. The majority of ovarian cancers, around 90%, are of epithelial origin, with serous carcinomas accounting for 70-80% of cases. Interestingly, recent research suggests that many ovarian cancers may actually originate in the distal end of the fallopian tube. Risk factors for ovarian cancer include a family history of BRCA1 or BRCA2 gene mutations, early menarche, late menopause, and nulliparity.
Clinical features of ovarian cancer are often vague and can include abdominal distension and bloating, abdominal and pelvic pain, urinary symptoms such as urgency, early satiety, and diarrhea. The initial diagnostic test recommended by NICE is a CA125 blood test, although this can also be elevated in other conditions such as endometriosis and benign ovarian cysts. If the CA125 level is raised, an urgent ultrasound scan of the abdomen and pelvis should be ordered. However, a CA125 test should not be used for screening asymptomatic women. Diagnosis of ovarian cancer is difficult and usually requires a diagnostic laparotomy.
Management of ovarian cancer typically involves a combination of surgery and platinum-based chemotherapy. Unfortunately, 80% of women have advanced disease at the time of diagnosis, leading to a 5-year survival rate of only 46%. It was previously thought that infertility treatment increased the risk of ovarian cancer due to increased ovulation, but recent evidence suggests that this is not a significant factor. In fact, the combined oral contraceptive pill and multiple pregnancies have been shown to reduce the risk of ovarian cancer by reducing the number of ovulations.
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This question is part of the following fields:
- Reproductive Medicine
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Question 11
Correct
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A 70-year-old man with metastatic lung cancer visits the general practice clinic complaining of lethargy and nausea. His full blood count, thyroid function test, calcium and liver function tests all come back normal. However, his urea and electrolytes reveal significant hyponatraemia, while the rest of the results are normal. He has a reduced plasma osmolality and increased urine osmolality. He is haemodynamically stable and euvolaemic.
What is the most probable diagnosis from the options below?Your Answer: Syndrome of inappropriate antidiuretic hormone secretion (SIADH)
Explanation:Differentiating Causes of Abnormal Urine Osmolality: A Brief Overview
Abnormal urine osmolality can be indicative of various underlying conditions. Here are some of the possible causes and how to differentiate them:
Syndrome of Inappropriate Antidiuretic Hormone Secretion (SIADH)
SIADH is characterized by excessive secretion of ADH, leading to hyperosmolar urine and low plasma osmolality. It can be caused by central nervous system disorders, malignancies, and drugs. Treatment involves fluid restriction and addressing the underlying cause.Cranial Diabetes Insipidus
This condition is caused by the hypothalamus not producing enough vasopressin, resulting in extreme thirst and polyuria. However, urine osmolality is reduced, not elevated.Nephrogenic Diabetes Insipidus
Nephrogenic diabetes insipidus is caused by the kidneys becoming resistant to the effect of vasopressin/ADH, leading to large volumes of dilute urine with reduced osmolality. Causes include electrolyte imbalances, medications, and renal tubular acidosis.Addison’s Disease
This condition is characterized by reduced production of glucocorticoids, mineralocorticoids, and adrenal androgens. Deficiency of mineralocorticoid leads to increased sodium excretion from the kidneys, resulting in hyponatremia associated with hyperkalemia. However, in this case, the patient has normal potassium levels.Primary Polydipsia
This condition is caused by excessive water drinking despite no physiological stimulus, resulting in dilute polyuria. However, in this patient, the urine osmolality is concentrated, making this diagnosis unlikely. A fluid deprivation test can help confirm or rule out this condition.In summary, abnormal urine osmolality can be indicative of various underlying conditions, and a thorough evaluation is necessary to determine the correct diagnosis and treatment.
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This question is part of the following fields:
- Endocrinology/Metabolic Disease
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Question 12
Incorrect
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A 35-year-old overweight man visits the clinic with concerns about abdominal discomfort he experienced over the weekend. He reports that the discomfort began in his upper abdomen shortly after eating a large pizza on Friday night. The discomfort then shifted to the left side of his abdomen. He also vomited a few times. Most of the symptoms subsided within 24 hours. During the examination, he is still slightly tender in the left upper quadrant and has no fever or jaundice.
What is the most probable diagnosis?Your Answer: Acute pancreatitis
Correct Answer: Biliary colic
Explanation:Biliary colic is a common symptom of gallstones, occurring in 1-4% of patients with choledocholithiasis. The pain is intense and dull, usually resolving within 30-90 minutes, and often occurs after consuming fatty meals. This matches the patient’s symptoms and risk factors. If left untreated, biliary colic can progress to acute cholecystitis, which presents with upper abdominal pain, nausea, vomiting, and fever. However, since the patient’s symptoms resolved within 24 hours, acute cholecystitis is unlikely. Acute viral hepatitis is also an unlikely diagnosis, as the patient has no known exposure to the viruses and her symptoms resolved too quickly. Acute pancreatitis presents with severe abdominal pain, nausea, vomiting, and fever, which does not match the patient’s symptoms. Ascending cholangitis is also unlikely, as the patient is afebrile and not jaundiced, and her symptoms resolved within 24 hours.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 13
Correct
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A 25-year-old man is brought to the Emergency Department by his friends. Around 2 hours ago he was allegedly assaulted outside of a bar. He was repeatedly punched in the head and has sustained some bruising around his eyes. His friends report that he is 'concussed' and say that he is confused. On examination his GCS is 14 (M6 V4 E4) and he has trouble explaining where he is. There are no focal neurological features. There is no past medical history of note. Tonight he has drunk around four pints of lager. What is the most appropriate management with regards to a possible head injury?
Your Answer: CT head scan within 1 hour
Explanation:According to the latest NICE guidelines, a CT head scan is necessary for this patient as their GCS remains below 15 after 2 hours.
NICE Guidelines for Investigating Head Injuries in Adults
Head injuries can be serious and require prompt medical attention. The National Institute for Health and Care Excellence (NICE) has provided clear guidelines for healthcare professionals to determine which adult patients need further investigation with a CT head scan. Patients who require immediate CT head scans include those with a Glasgow Coma Scale (GCS) score of less than 13 on initial assessment, suspected open or depressed skull fractures, signs of basal skull fractures, post-traumatic seizures, focal neurological deficits, and more than one episode of vomiting.
For patients with any loss of consciousness or amnesia since the injury, a CT head scan within 8 hours is recommended for those who are 65 years or older, have a history of bleeding or clotting disorders, experienced a dangerous mechanism of injury, or have more than 30 minutes of retrograde amnesia of events immediately before the head injury. Additionally, patients on warfarin who have sustained a head injury with no other indications for a CT head scan should also receive a scan within 8 hours of the injury.
It is important for healthcare professionals to follow these guidelines to ensure that patients receive appropriate and timely care for their head injuries. By identifying those who require further investigation, healthcare professionals can provide the necessary treatment and support to prevent further complications and improve patient outcomes.
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This question is part of the following fields:
- Neurology
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Question 14
Incorrect
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A 45-year-old man presents to surgery with several weeks of intermittent vertigo, tinnitus, and decreased hearing on the right side. You suspect Ménière’s disease.
Which of the following is the most appropriate management option for this patient?Your Answer: Oral or buccal prochlorperazine long term
Correct Answer: Referral to ENT
Explanation:Management of Meniere’s Disease
Meniere’s disease is a condition characterized by intermittent bouts of vertigo, tinnitus, and/or deafness in one or both ears, as well as a feeling of fullness or pressure in the affected ear. If a patient presents with these symptoms, a referral to an ear, nose, and throat (ENT) consultant is advisable to confirm the diagnosis and exclude other potential causes.
If the patient is experiencing an acute attack, self-care advice and medication may be warranted. Prochlorperazine is recommended for acute attacks, while betahistine is used for preventive treatment. Severe symptoms may require hospital admission for supportive treatment.
Long-term use of oral or buccal prochlorperazine is not recommended, and vestibular rehabilitation is not the most appropriate management for this condition. Instead, patients should be referred to a specialist for further evaluation and management.
Carbamazepine is not indicated for the management of Meniere’s disease. Patients should also be advised to inform the Driver and Vehicle Licensing Authority (DVLA) of their condition.
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This question is part of the following fields:
- ENT
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Question 15
Correct
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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.
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This question is part of the following fields:
- Paediatrics
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Question 16
Correct
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You are in the emergency department assessing a 68-year-old man who has arrived with a fractured femur. He is currently taking anticoagulants for his atrial fibrillation and you have been requested to reverse the anticoagulation to prepare him for surgery. Can you match the correct anticoagulant with its corresponding reversal agent?
Your Answer: Dabigatran - Idarucizumab
Explanation:Vitamin K is the antidote for warfarin.
Idarucizumab is the antidote for dabigatran.
Protamine sulfate is the antidote for heparin.Understanding Direct Oral Anticoagulants
Direct oral anticoagulants (DOACs) are medications used for various indications such as preventing stroke in non-valvular atrial fibrillation, preventing venous thromboembolism (VTE) after hip or knee surgery, and treating deep vein thrombosis (DVT) and pulmonary embolism (PE). To be prescribed DOACs for stroke prevention in non-valvular AF, certain risk factors must be present, such as prior stroke or transient ischaemic attack, age 75 years or older, hypertension, diabetes mellitus, or heart failure.
There are four DOACs available, namely dabigatran, rivaroxaban, apixaban, and edoxaban, which differ in their mechanism of action and excretion. Dabigatran is a direct thrombin inhibitor, while rivaroxaban, apixaban, and edoxaban are direct factor Xa inhibitors. The majority of dabigatran is excreted through the kidneys, while rivaroxaban is metabolized in the liver, and apixaban and edoxaban are excreted through the feces.
In terms of reversal agents, idarucizumab is available for dabigatran, while andexanet alfa is available for rivaroxaban and apixaban. However, there is currently no authorized reversal agent for edoxaban, although andexanet alfa has been studied. Understanding the differences between DOACs is important for healthcare professionals to make informed decisions when prescribing these medications.
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This question is part of the following fields:
- Pharmacology/Therapeutics
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Question 17
Correct
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A 62-year-old man with a history of hypertension presents to the emergency department with sudden onset of abdominal pain, vomiting and diarrhoea. On examination, his abdomen is distended and tender, with generalised guarding. Vital signs show heart rate 110 beats/min, BP 120/80 mmHg. Bloods show lactate 3.5 mmol/l, urea 10 mmol/l, creatinine 150 µmol/l and bicarbonate 14 mmol/l.
Blood test
Reference range
Lactate
<2 mmol/l
Urea
2.5–7.1 mmol/l
Creatinine
44–97 µmol/l
Bicarbonate
22–29 mmol/l.
Based on the history, what is the most likely diagnosis?
Choose the SINGLE most likely diagnosis from the options below.Your Answer: Mesenteric ischaemia
Explanation:Acute mesenteric ischaemia (AMI) is a rare but potentially life-threatening condition caused by inadequate blood flow through the mesenteric vessels, leading to ischaemia and gangrene of the bowel wall. It can be classified as either arterial or venous, with embolic phenomena being the most common cause. Symptoms include sudden and severe abdominal pain, vomiting, and diarrhoea, with physical signs developing late in the disease process. Early and aggressive diagnosis and treatment are crucial to reduce mortality, but once bowel wall infarction has occurred, the mortality rate may be as high as 90%. Appendicitis, diverticulitis, pseudomembranous colitis, and ruptured AAA are important differential diagnoses to consider.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 18
Incorrect
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A 5-year-old girl presented to the eye clinic with swollen and red upper and lower eyelids on her right eye. Upon further examination, it was found that she had decreased visual acuity, conjunctival hyperaemia, mild proptosis, and pain during eye movements. The mother reported that the girl had a severe cold for a week before the onset of these symptoms. What is the most probable diagnosis for this girl?
Your Answer: Orbital cellulitis secondary to allergic rhinitis
Correct Answer: Orbital cellulitis secondary to ethmoidal sinusitis
Explanation:The most common cause of orbital cellulitis in children is an infection of the ethmoidal sinus, which has a relatively thin medial wall that allows for easy spread of infection to the orbital cavity. In this case, the patient’s symptoms of proptosis, decreased visual acuity, and ocular motility indicate a diagnosis of orbital cellulitis rather than preseptal cellulitis. The patient’s history of a prolonged cold suggests that ethmoidal sinusitis is the likely cause of the infection. Otitis externa is not relevant to this case as there are no associated symptoms of earache or discharge, and there is no indication of atopy or seasonal predilection to suggest allergic rhinitis.
Understanding Orbital Cellulitis: Causes, Symptoms, and Management
Orbital cellulitis is a serious infection that affects the fat and muscles behind the orbital septum within the orbit, but not the globe. It is commonly caused by upper respiratory tract infections that spread from the sinuses and can lead to a high mortality rate. On the other hand, periorbital cellulitis is a less severe infection that occurs in the superficial tissues anterior to the orbital septum. However, it can progress to orbital cellulitis if left untreated.
Risk factors for orbital cellulitis include childhood, previous sinus infections, lack of Haemophilus influenzae type b (Hib) vaccination, recent eyelid infections or insect bites, and ear or facial infections. Symptoms of orbital cellulitis include redness and swelling around the eye, severe ocular pain, visual disturbance, proptosis, ophthalmoplegia, eyelid edema, and ptosis. In rare cases, meningeal involvement can cause drowsiness, nausea, and vomiting.
To differentiate between orbital and preseptal cellulitis, doctors look for reduced visual acuity, proptosis, and ophthalmoplegia, which are not consistent with preseptal cellulitis. Full blood count and clinical examination involving complete ophthalmological assessment are necessary to determine the severity of the infection. CT with contrast can also help identify inflammation of the orbital tissues deep to the septum and sinusitis. Blood culture and microbiological swab are also necessary to determine the organism causing the infection.
Management of orbital cellulitis requires hospital admission for IV antibiotics. It is a medical emergency that requires urgent senior review. Early diagnosis and treatment are crucial to prevent complications and reduce the risk of mortality.
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This question is part of the following fields:
- Ophthalmology
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Question 19
Incorrect
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A 63-year-old man presents to the emergency department with sudden-onset chest pain and nausea. He is not taking any regular medications. An ECG reveals ST depression and T wave inversion in leads V2-V4, and troponin levels are elevated. The patient receives a STAT 300mg aspirin, and there are no immediate plans for primary PCI. According to the GRACE score, the 6-month mortality risk is 8.0%. The patient is stable. What is the best course of treatment going forward?
Your Answer:
Correct Answer: Fondaparinux, prasugrel or ticagrelor, and refer for coronary angiography within 72 hours
Explanation:The current treatment plan of prescribing fondaparinux, clopidogrel, and scheduling a coronary angiography in 3 months is incorrect. Clopidogrel is typically prescribed for patients with a higher risk of bleeding or those taking an oral anticoagulant. Additionally, delaying definitive treatment for a high-risk patient by scheduling a coronary angiography in 3 months could lead to increased mortality. Instead, a more appropriate treatment plan would involve prescribing prasugrel, unfractionated heparin, and a glycoprotein IIB/IIIA inhibitor, and referring the patient for urgent PCI within 2 hours. However, it should be noted that this treatment plan is specific to patients with STEMI and access to PCI facilities.
Managing Acute Coronary Syndrome: A Summary of NICE Guidelines
Acute coronary syndrome (ACS) is a common and serious medical condition that requires prompt management. The management of ACS has evolved over the years, with the development of new drugs and procedures such as percutaneous coronary intervention (PCI). The National Institute for Health and Care Excellence (NICE) has updated its guidelines on the management of ACS in 2020.
ACS can be classified into three subtypes: ST-elevation myocardial infarction (STEMI), non ST-elevation myocardial infarction (NSTEMI), and unstable angina. The management of ACS depends on the subtype. However, there are common initial drug therapies for all patients with ACS, such as aspirin and nitrates. Oxygen should only be given if the patient has oxygen saturations below 94%, and morphine should only be given for severe pain.
For patients with STEMI, the first step is to assess eligibility for coronary reperfusion therapy, which can be either PCI or fibrinolysis. Patients with NSTEMI/unstable angina require a risk assessment using the Global Registry of Acute Coronary Events (GRACE) tool to determine whether they need coronary angiography (with follow-on PCI if necessary) or conservative management.
This summary provides an overview of the NICE guidelines for managing ACS. The guidelines are complex and depend on individual patient factors, so healthcare professionals should review the full guidelines for further details. Proper management of ACS can improve patient outcomes and reduce the risk of complications.
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This question is part of the following fields:
- Cardiovascular
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Question 20
Incorrect
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A 52-year-old woman had a anterior myocardial infarction (MI) three weeks ago and has been prescribed various drugs by the cardiology team.
Which of the following medications is most likely to decrease this patient’s mortality post-MI?
Your Answer:
Correct Answer: Bisoprolol
Explanation:Common Medications for Cardiovascular Conditions
Bisoprolol is a beta-blocker that specifically targets the heart, reducing strain by decreasing pre-load and after-load. It has been found to be effective in reducing mortality after a heart attack, especially in patients with heart failure.
Amiodarone is an anti-arrhythmic drug that can be used to prevent irregular heartbeats. However, it does not improve mortality rates in post-heart attack patients.
Isosorbide mononitrate is a medication that helps lower blood pressure and can alleviate chest pain in stable angina. It does not improve mortality rates and should be used with caution when taken with sildenafil.
Nicorandil works by dilating the coronary arteries, reducing chest pain in stable angina. While it does not improve prognostic outcomes, it can improve symptoms.
Patients who have experienced a myocardial infarction (MI) should be started on a combination of medications to improve their outcomes. The following medications are recommended for post-MI patients:
1. Statin: This medication helps to lower cholesterol levels and reduce the risk of future cardiovascular events.
2. ACE inhibitor: This medication helps to lower blood pressure and reduce the risk of heart failure.
3. Beta blocker: This medication helps to reduce the workload on the heart and improve its function.
4. Aspirin: This medication helps to prevent blood clots and reduce the risk of future cardiovascular events.
Other medications may be used to relieve symptoms, such as ISMN and nicorandil, but they do not offer any mortality benefit. It is important for post-MI patients to take their medications as prescribed and to follow up with their healthcare provider regularly to monitor their progress.
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This question is part of the following fields:
- Pharmacology/Therapeutics
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Question 21
Incorrect
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A boy of 7 presents with a unilateral painless limp. Examination shows limitation of rotation and extension at the affected hip joint, and a radiograph shows a dense flattened and fragmented femoral head on the affected side.
Which of the following is the most likely diagnosis?
Your Answer:
Correct Answer: Perthes' disease
Explanation:Perthes’ Disease: Avascular Necrosis of the Proximal Femoral Head in Children
Perthes’ disease is a condition that results from avascular necrosis of the proximal femoral head, which is caused by a compromised blood supply. It typically affects children aged 4-10, with boys being affected more frequently than girls. The disease presents with a painless limp and limited range of motion of the affected hip, followed by hip pain as necrosis develops.
The diagnosis of Perthes’ disease is suspected clinically, and radiographs may be normal initially or show only a non-specific effusion. As the condition progresses, the joint space between the ossified femoral head and acetabulum widens, and narrowing or collapse of the femoral head causes it to appear widened and flattened. Eventually, femoral head collapse may ensue.
Other conditions that may present similarly to Perthes’ disease include slipped upper femoral epiphysis, septic arthritis, juvenile rheumatoid arthritis, and congenital dislocation of the hip. However, each of these conditions has its own unique features and diagnostic criteria.
Overall, Perthes’ disease is a generalised disorder of cartilage development that predisposes children to repeated episodes of infarction in the proximal femoral epiphysis. The most significant factors determining prognosis are onset in the older child, epiphyseal protrusion, extensive involvement of the epiphysis, and arrest of subcapital growth.
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This question is part of the following fields:
- Paediatrics
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Question 22
Incorrect
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John is a 35-year-old male who has been detained by the police under a section of the Mental Health Act. He was seen running in and out of traffic in a public area, openly responding to unseen stimuli and avoiding social interaction.
Regarding the section he has likely been placed under, which of the following is true?Your Answer:
Correct Answer: It lasts up to 24 hours
Explanation:The police can utilize Section 136 to transport individuals who may be exhibiting indications of mental illness and pose a danger to themselves or others to a secure location. This section is only valid for a maximum of 24 hours, during which time a Mental Health Act Assessment can be scheduled. In rare cases, it may be extended by an additional 12 hours. It is only applicable to individuals in public areas, not in their own or someone else’s residence – Section 135 is required for this. It does not authorize involuntary treatment. A secure location can be a hospital, the individual’s home or a friend’s home, or, if no other option is available, a police station.
Sectioning under the Mental Health Act is a legal process used for individuals who refuse voluntary admission. This process excludes patients who are under the influence of drugs or alcohol. There are several sections under the Mental Health Act that allow for different types of admission and treatment.
Section 2 allows for admission for assessment for up to 28 days, which is not renewable. An Approved Mental Health Professional (AMHP) or the nearest relative (NR) can make the application on the recommendation of two doctors, one of whom should be an approved consultant psychiatrist. Treatment can be given against the patient’s wishes.
Section 3 allows for admission for treatment for up to 6 months, which can be renewed. An AMHP and two doctors, both of whom must have seen the patient within the past 24 hours, can make the application. Treatment can also be given against the patient’s wishes.
Section 4 is used as an emergency 72-hour assessment order when a section 2 would involve an unacceptable delay. A GP and an AMHP or NR can make the application, which is often changed to a section 2 upon arrival at the hospital.
Section 5(2) allows a doctor to legally detain a voluntary patient in hospital for 72 hours, while section 5(4) allows a nurse to detain a voluntary patient for 6 hours.
Section 17a allows for Supervised Community Treatment (Community Treatment Order) and can be used to recall a patient to the hospital for treatment if they do not comply with the conditions of the order in the community, such as taking medication.
Section 135 allows for a court order to be obtained to allow the police to break into a property to remove a person to a Place of Safety. Section 136 allows for someone found in a public place who appears to have a mental disorder to be taken by the police to a Place of Safety. This section can only be used for up to 24 hours while a Mental Health Act assessment is arranged.
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This question is part of the following fields:
- Psychiatry
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Question 23
Incorrect
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Which one of the following scenarios would not require immediate referral to the nearby breast service as per the guidelines of NICE?
Your Answer:
Correct Answer: 28-year-old female with a 8 week history of a new breast lump. Benign in nature on examination
Explanation:According to NICE guidelines, women who are 30 years or older should be referred urgently to the local breast services if they have an unexplained breast lump with or without pain. As the woman in question is 28 years old, she should be referred to the local breast services, but it is not urgent.
In 2015, NICE released guidelines for referring individuals suspected of having breast cancer. If a person is 30 years or older and has an unexplained breast lump with or without pain, or if they are 50 years or older and have discharge, retraction, or other concerning changes in one nipple only, they should be referred using a suspected cancer pathway referral for an appointment within two weeks. If a person has skin changes that suggest breast cancer or is 30 years or older with an unexplained lump in the axilla, a suspected cancer pathway referral should also be considered. For individuals under 30 years old with an unexplained breast lump with or without pain, non-urgent referral should be considered.
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This question is part of the following fields:
- Haematology/Oncology
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Question 24
Incorrect
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A 25-year-old man complains of recurring headaches. He experiences these headaches about 2-3 times per month. The headaches are severe and occur on the right side of his head. They are throbbing in nature and last for approximately 8-12 hours. During these episodes, he finds it difficult to continue working and prefers to rest in a dark room. Paracetamol has not been effective in relieving his symptoms. What medication should be prescribed to decrease the frequency of these headaches?
Your Answer:
Correct Answer: Propranolol
Explanation:For the acute treatment of migraine, a combination of triptan and NSAID or triptan and paracetamol is recommended. Prophylaxis options include topiramate or propranolol. In this case, the patient’s history is consistent with migraine and prophylaxis with propranolol or topiramate should be considered. Zolmitriptan is not indicated for prophylaxis, but rather for acute treatment of migraine.
Managing Migraines: Guidelines and Treatment Options
Migraines can be debilitating and affect a significant portion of the population. To manage migraines, it is important to understand the different treatment options available. According to the National Institute for Health and Care Excellence (NICE) guidelines, acute treatment for migraines involves a combination of an oral triptan and an NSAID or paracetamol. For young people aged 12-17 years, a nasal triptan may be preferred. If these measures are not effective, non-oral preparations of metoclopramide or prochlorperazine may be considered, along with a non-oral NSAID or triptan.
Prophylaxis should be given if patients are experiencing two or more attacks per month. NICE recommends topiramate or propranolol, depending on the patient’s preference, comorbidities, and risk of adverse events. Propranolol is preferred in women of childbearing age as topiramate may be teratogenic and reduce the effectiveness of hormonal contraceptives. Acupuncture and riboflavin may also be effective in reducing migraine frequency and intensity for some people. For women with predictable menstrual migraines, frovatriptan or zolmitriptan may be recommended as a type of mini-prophylaxis.
Specialists may consider other treatment options, such as candesartan or monoclonal antibodies directed against the calcitonin gene-related peptide (CGRP) receptor, like erenumab. However, pizotifen is no longer recommended due to common adverse effects like weight gain and drowsiness. It is important to exercise caution with young patients as acute dystonic reactions may develop. By following these guidelines and considering various treatment options, migraines can be effectively managed.
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This question is part of the following fields:
- Neurology
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Question 25
Incorrect
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A 9-year-old boy with a history of asthma is being evaluated. He is currently receiving treatment with a salbutamol inhaler as needed and beclometasone inhaler 100mcg twice daily. However, he frequently requires salbutamol for exacerbations and experiences a nighttime cough.
In accordance with NICE recommendations, what is the most suitable course of action for further management?Your Answer:
Correct Answer: Trial of a leukotriene receptor antagonist
Explanation:For children between the ages of 5 and 16 who have asthma that is not being controlled by a combination of a short-acting beta agonist (SABA) and a low-dose inhaled corticosteroid (ICS), it is recommended to add a leukotriene receptor antagonist to their asthma management plan.
Managing Asthma in Children: NICE Guidelines
Asthma management in children has been updated by NICE in 2017, following the 2016 BTS guidelines. The new guidelines for children aged 5-16 are similar to those for adults, with a stepwise approach for treatment. For newly-diagnosed asthma, short-acting beta agonist (SABA) is recommended. If symptoms persist, a combination of SABA and paediatric low-dose inhaled corticosteroid (ICS) is used. Leukotriene receptor antagonist (LTRA) is added if symptoms still persist, followed by long-acting beta agonist (LABA) if necessary. Maintenance and reliever therapy (MART) is used as a combination of ICS and LABA for daily maintenance therapy and symptom relief. For children under 5 years old, clinical judgement plays a greater role in diagnosis. The stepwise approach is similar to that for older children, with an 8-week trial of paediatric moderate-dose ICS before adding LTRA. If symptoms persist, referral to a paediatric asthma specialist is recommended.
It should be noted that NICE does not recommend changing treatment for well-controlled asthma patients simply to adhere to the latest guidelines. The definitions of low, moderate, and high-dose ICS have also changed, with different definitions for adults and children. For children, <= 200 micrograms budesonide or equivalent is considered a paediatric low dose, 200-400 micrograms is a moderate dose, and > 400 micrograms is a high dose. Overall, the new NICE guidelines provide a clear and concise approach to managing asthma in children.
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This question is part of the following fields:
- Paediatrics
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Question 26
Incorrect
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A 48-year-old woman comes to the clinic for advice on contraception. She has started a new relationship but is uncertain if she needs contraception as she suspects she may be going through menopause. She reports experiencing hot flashes and her last period was 9 months ago. What is the best course of action to recommend?
Your Answer:
Correct Answer: Contraception is needed until 12 months after her last period
Explanation:Contraception is still necessary after menopause. Women who are over 50 years old should use contraception for at least 12 months after their last period, while those under 50 years old should use it for at least 24 months after their last period.
Understanding Menopause and Contraception
Menopause is a natural biological process that marks the end of a woman’s reproductive years. On average, women in the UK experience menopause at the age of 51. However, prior to menopause, women may experience a period known as the climacteric. During this time, ovarian function starts to decline, and women may experience symptoms such as hot flashes, mood swings, and vaginal dryness.
It is important for women to understand that they can still become pregnant during the climacteric period. Therefore, it is recommended to use effective contraception until a certain period of time has passed. Women over the age of 50 should use contraception for 12 months after their last period, while women under the age of 50 should use contraception for 24 months after their last period. By understanding menopause and the importance of contraception during the climacteric period, women can make informed decisions about their reproductive health.
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This question is part of the following fields:
- Reproductive Medicine
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Question 27
Incorrect
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A 76-year-old man comes to the emergency department complaining of severe abdominal pain. He reports not having had a bowel movement or passed gas in the past 48 hours. Upon further questioning, he reveals that he has experienced constipation and weight loss in recent weeks. After a CT scan, a mass is discovered in the hepatic flexure, leading the medical team to suspect a large bowel obstruction caused by cancer. What is the most suitable surgical treatment plan for this patient?
Your Answer:
Correct Answer: Right hemicolectomy
Explanation:The appropriate surgical procedure for a patient with caecal, ascending or proximal transverse colon cancer is a right hemicolectomy. This involves removing the cecum, ascending colon, and proximal third of the transverse colon. If the cancer is located at the hepatic flexure, an extended right hemicolectomy may be necessary. Hartmann’s procedure is reserved for emergencies such as bowel obstruction or perforation and involves complete resection of the rectum and sigmoid colon with the formation of an end colostomy. A high anterior resection is used for upper rectal tumors, while a left hemicolectomy is used for distal two-thirds of the transverse colon and descending colon tumors. A low anterior resection is used for low rectal tumors, but none of these procedures are appropriate for a patient with a mass in the hepatic flexure.
Colorectal cancer is typically diagnosed through CT scans and colonoscopies or CT colonography. Patients with tumors below the peritoneal reflection should also undergo MRI to evaluate their mesorectum. Once staging is complete, a treatment plan is formulated by a dedicated colorectal MDT meeting.
For colon cancer, surgery is the primary treatment option, with resectional surgery being the only cure. The procedure is tailored to the patient and tumor location, with lymphatic chains being resected based on arterial supply. Anastomosis is the preferred method of restoring continuity, but in some cases, an end stoma may be necessary. Chemotherapy is often offered to patients with risk factors for disease recurrence.
Rectal cancer management differs from colon cancer due to the rectum’s anatomical location. Tumors can be surgically resected with either an anterior resection or an abdomino-perineal excision of rectum (APER). A meticulous dissection of the mesorectal fat and lymph nodes is integral to the procedure. Neoadjuvant radiotherapy is often offered to patients prior to resectional surgery, and those with obstructing rectal cancer should have a defunctioning loop colostomy.
Segmental resections based on blood supply and lymphatic drainage are the primary operations for cancer. The type of resection and anastomosis depend on the site of cancer. In emergency situations where the bowel has perforated, an end colostomy is often safer. Left-sided resections are more risky, but ileo-colic anastomoses are relatively safe even in the emergency setting and do not need to be defunctioned.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 28
Incorrect
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A 29-year-old man arrives at the emergency department experiencing an asthma attack. Despite being a known asthmatic, his condition is usually well managed with a salbutamol inhaler. Upon assessment, his peak expiratory flow rate is at 50%, respiratory rate at 22/min, heart rate at 105/min, blood pressure at 128/64 mmHg, and temperature at 36.7 ºC. During examination, he appears distressed and unable to complete sentences. A chest examination reveals widespread wheezing and respiratory distress.
What is the most probable diagnosis for this patient?Your Answer:
Correct Answer: Severe asthma attack
Explanation:Management of Acute Asthma
Acute asthma is classified by the British Thoracic Society (BTS) into three categories: moderate, severe, and life-threatening. Patients with any of the life-threatening features should be treated as having a life-threatening attack. A fourth category, Near-fatal asthma, is also recognized. Further assessment may include arterial blood gases for patients with oxygen saturation levels below 92%. A chest x-ray is not routinely recommended unless the patient has life-threatening asthma, suspected pneumothorax, or failure to respond to treatment.
Admission criteria include a previous near-fatal asthma attack, pregnancy, an attack occurring despite already using oral corticosteroid, and presentation at night. All patients with life-threatening asthma should be admitted to the hospital, and patients with features of severe acute asthma should also be admitted if they fail to respond to initial treatment. Oxygen therapy should be started for hypoxaemic patients. Bronchodilation with short-acting beta₂-agonists (SABA) is recommended, and all patients should be given 40-50mg of prednisolone orally daily. Ipratropium bromide and IV magnesium sulphate may also be considered for severe or life-threatening asthma. Patients who fail to respond require senior critical care support and should be treated in an appropriate ITU/HDU setting. Criteria for discharge include stability on discharge medication, checked and recorded inhaler technique, and PEF levels above 75% of best or predicted.
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This question is part of the following fields:
- Respiratory Medicine
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Question 29
Incorrect
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A 72-year-old woman presents to her General Practitioner for review, two months after being discharged from hospital. She has hypothyroidism, maintained on 75 µg levothyroxine once a day. Following discharge, she also began taking amlodipine, amitriptyline, ferrous fumarate and ranitidine.
Investigations reveal that her thyroid-stimulating hormone (TSH) level is 9.1 mU/l (normal range: 0.25–4.0 mU/l), while her free thyroxine (T4) is 8.1 pmol/l (normal range: 12.0–22.0 pmol/l).
She is compliant with her medications and takes them all together in the morning.
Which of the following is the most likely cause of this patient’s results?
Your Answer:
Correct Answer: Ferrous fumarate
Explanation:Interactions with Levothyroxine: Understanding the Effects of Different Medications
Levothyroxine is a medication used to treat hypothyroidism, a condition where the thyroid gland does not produce enough thyroid hormone. However, certain medications can interact with levothyroxine and affect its absorption and effectiveness. Let’s explore the effects of different medications on levothyroxine and how they can impact thyroid function tests.
Ferrous Fumarate: Iron salts can reduce the absorption of levothyroxine, leading to inadequate replacement and hypothyroidism. It is recommended to take these medications at least four hours apart to avoid this interaction.
Amitriptyline: While thyroid hormones can enhance the effect of amitriptyline, this medication does not reduce the effect of levothyroxine and would not cause hypothyroidism.
Amlodipine: There is no interaction between amlodipine and levothyroxine, and this medication would not affect thyroid function tests.
Aspirin: Similarly, there is no interaction between aspirin and levothyroxine, and the use of this medication would not impact thyroid function tests.
Ranitidine: While antacids can reduce levothyroxine absorption, ranitidine is an H2 receptor antagonist and not classified as an antacid. Therefore, there is no interaction between ranitidine and levothyroxine.
In conclusion, it is important to be aware of potential interactions between medications and levothyroxine to ensure adequate treatment of hypothyroidism. By understanding the effects of different medications, healthcare professionals can make informed decisions and adjust medication schedules as needed.
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This question is part of the following fields:
- Endocrinology/Metabolic Disease
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Question 30
Incorrect
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A 6-month-old baby girl is brought to her General Practitioner by her mother. She had a runny nose for two days and has had a cough for three days. She has not been feeding as much as usual.
On examination, her temperature is 38.2 °C. Her respiratory rate is slightly raised. On auscultation of the chest, she has a widespread wheeze and crepitations. Her other observations are within normal limits.
What is the most likely diagnosis?Your Answer:
Correct Answer: Bronchiolitis
Explanation:Distinguishing between respiratory illnesses in children: A guide
When a child presents with respiratory symptoms, it can be difficult to determine the underlying cause. Here, we will discuss the key features of several common respiratory illnesses in children and how to differentiate between them.
Bronchiolitis is characterized by coryzal symptoms followed by a persistent cough, tachypnea, chest recession, and wheezing or crepitations on auscultation. A low-grade fever and reduced feeding may also be present.
Croup is a viral upper airway infection that causes a barking cough, predominantly inspiratory stridor, hoarse voice, intercostal or sternal indrawing, fever, and coryzal symptoms.
Asthma typically presents with shortness of breath, cough, wheeze, and chest tightness, and is more common in children over two years old.
Acute epiglottitis is an insidious but rapidly progressive airway emergency that causes fever, sore throat, odynophagia, muffled voice, dysphagia, dyspnea, respiratory distress, dysphonia, and stridor. The child may sit in a tripod position to maximize airway opening.
A viral upper respiratory tract infection may cause coryzal symptoms, cough, and fever, but crepitations on auscultation would not be expected.
By understanding the key features of these respiratory illnesses, healthcare providers can make a more accurate diagnosis and provide appropriate treatment.
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This question is part of the following fields:
- Paediatrics
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