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Question 1
Incorrect
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A 67-year-old man contacts emergency services due to experiencing central crushing chest pain that spreads to his left arm and jaw. Upon arrival at the emergency department, his heart rate is recorded at 50/min. An ECG is conducted, revealing ST elevation and bradycardia with a 1st-degree heart block. Based on the provided information, which leads are expected to display the ST elevation?
Your Answer: V1-2
Correct Answer: II, III and aVF
Explanation:An ST-elevated myocardial infarction affecting the inferior leads (II, III, aVF) can cause arrhythmias due to the involvement of the right coronary artery, which supplies blood to the AV node. This is evidenced by the patient’s presentation with 1st-degree heart block following the MI.
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.
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This question is part of the following fields:
- Cardiovascular
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Question 2
Correct
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An 80-year-old man complains of lower back pain and right hip pain. Upon conducting blood tests, the following results were obtained:
Calcium 2.20 mmol/l
Phosphate 0.8 mmol/l
ALP 890 u/L
What is the probable diagnosis?Your Answer: Paget's disease
Explanation:Understanding Paget’s Disease of the Bone
Paget’s disease of the bone is a condition characterized by increased and uncontrolled bone turnover. It is believed to be caused by excessive osteoclastic resorption followed by increased osteoblastic activity. Although it is a common condition, affecting 5% of the UK population, only 1 in 20 patients experience symptoms. The most commonly affected areas are the skull, spine/pelvis, and long bones of the lower extremities. Predisposing factors include increasing age, male sex, northern latitude, and family history.
Symptoms of Paget’s disease include bone pain, particularly in the pelvis, lumbar spine, and femur. The stereotypical presentation is an older male with bone pain and an isolated raised alkaline phosphatase (ALP). Classical, untreated features include bowing of the tibia and bossing of the skull. Diagnosis is made through blood tests, which show raised ALP, and x-rays, which reveal osteolysis in early disease and mixed lytic/sclerotic lesions later.
Treatment is indicated for patients experiencing bone pain, skull or long bone deformity, fracture, or periarticular Paget’s. Bisphosphonates, either oral risedronate or IV zoledronate, are the preferred treatment. Calcitonin is less commonly used now. Complications of Paget’s disease include deafness, bone sarcoma (1% if affected for > 10 years), fractures, skull thickening, and high-output cardiac failure.
Overall, understanding Paget’s disease of the bone is important for early diagnosis and management of symptoms and complications.
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This question is part of the following fields:
- Musculoskeletal
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Question 3
Incorrect
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A 58-year-old man presents to his doctor with concerns about his chest. He feels embarrassed and believes that he is developing breast tissue. Upon examination, bilateral gynaecomastia is the only abnormal finding. The patient has a medical history of hypertension, high cholesterol, type 2 diabetes, and benign prostatic hyperplasia. Which medication is the most probable cause of this condition?
Your Answer: Simvastatin
Correct Answer: Finasteride
Explanation:Gynaecomastia in males can have various underlying causes, some of which may be serious, such as endocrine disorders, liver failure, kidney failure, or malignancy. Additionally, medication-related causes should be considered, as in the case of this patient who was taking finasteride, which is known to cause gynaecomastia. Finasteride functions by inhibiting 5-alpha-reductase, which reduces dihydrotestosterone production and shrinks the prostate. However, it can also lead to side effects such as sexual dysfunction and gynaecomastia.
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.
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This question is part of the following fields:
- Pharmacology/Therapeutics
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Question 4
Correct
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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: 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.
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This question is part of the following fields:
- Neurology
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Question 5
Correct
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Which one of the following is true regarding anti-tuberculous therapy?
Your Answer: Visual acuity should be checked before starting ethambutol
Explanation:Rifampicin has a strong ability to induce liver enzymes. During the initial two months of treatment, Pyrazinamide should be administered, but it may cause hepatitis and gout as side effects. Isoniazid may cause peripheral neuropathy as a side effect.
Managing Tuberculosis: Treatment and Complications
Tuberculosis is a serious infectious disease that requires prompt and effective treatment. The standard therapy for active tuberculosis involves an initial phase of two months, during which patients are given a combination of four drugs: rifampicin, isoniazid, pyrazinamide, and ethambutol. The continuation phase lasts for four months and involves the use of rifampicin and isoniazid. Patients with latent tuberculosis are typically treated with a combination of isoniazid and rifampicin for three or six months, depending on the severity of the infection.
In some cases, patients may require prolonged treatment, particularly if they have meningeal tuberculosis. Steroids may be added to the treatment regimen in these cases. Directly observed therapy may also be necessary for certain groups, such as homeless individuals, prisoners, and patients who are likely to have poor concordance.
While tuberculosis treatment is generally effective, there are some potential complications to be aware of. Immune reconstitution disease can occur several weeks after starting treatment and may present with enlarging lymph nodes. Drug adverse effects are also possible, with rifampicin being a potent liver enzyme inducer and isoniazid causing peripheral neuropathy. Pyrazinamide can cause hyperuricaemia and ethambutol may lead to optic neuritis, so it is important to monitor patients closely for any signs of adverse effects. Overall, with proper management and monitoring, tuberculosis can be successfully treated.
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This question is part of the following fields:
- Infectious Diseases
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Question 6
Correct
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A 63-year-old male visits his primary care physician for a diabetic check-up. He has been dealing with type-two diabetes mellitus for a while, but has not been able to control it completely. Despite making all the necessary lifestyle changes and taking metformin and gliclazide, he complains of polyuria and his Hba1c is 62 mmol/mol. He has a history of hypertension, which is managed with amlodipine, and recurrent urinary tract infections. He is hesitant to use insulin due to his fear of needles. What is the best course of action for managing his condition?
Your Answer: Add sitagliptin
Explanation:If a patient with TD2M is already taking two drugs and their HbA1c is above 58 mmol/mol, they should be offered a third drug or insulin therapy. However, insulin therapy should be avoided if possible for patients who are afraid of needles. In this case, the best option is to add sitagliptin to the patient’s current medication regimen of metformin and gliclazide. SGLT-2 inhibitors should be avoided due to the patient’s history of recurrent urinary tract infections, and pioglitazone is rarely prescribed. Exenatide is not appropriate for this patient as it is a GLP-1 mimetic and should only be added if the patient cannot tolerate triple therapy and has a BMI greater than 35. It is not recommended to stop any current medications and substitute them with sitagliptin, as the drugs should work synergistically together.
NICE updated its guidance on the management of type 2 diabetes mellitus (T2DM) in 2022, reflecting advances in drug therapy and improved evidence regarding newer therapies such as SGLT-2 inhibitors. The first-line drug of choice remains metformin, which should be titrated up slowly to minimize gastrointestinal upset. HbA1c targets should be agreed upon with patients and checked every 3-6 months until stable, with consideration for relaxing targets on a case-by-case basis. Dietary advice includes encouraging high fiber, low glycemic index sources of carbohydrates and controlling intake of foods containing saturated fats and trans fatty acids. Blood pressure targets are the same as for patients without type 2 diabetes, and antiplatelets should not be offered unless a patient has existing cardiovascular disease. Only patients with a 10-year cardiovascular risk > 10% should be offered a statin, with atorvastatin 20mg as the first-line choice.
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This question is part of the following fields:
- Endocrinology/Metabolic Disease
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Question 7
Correct
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A 75-year-old woman visits her general practitioner with a complaint of itchy white plaques on her vulva and inner thigh. She denies experiencing any vaginal discharge or bleeding. What is the probable diagnosis?
Your Answer: Lichen sclerosus
Explanation:Lichen sclerosus is a condition characterized by itchy white spots that are commonly observed on the vulva of older women. While candida can also cause itching and white patches, it would not result in lesions appearing on the inner thigh as well.
Understanding Lichen Sclerosus
Lichen sclerosus, previously known as lichen sclerosus et atrophicus, is an inflammatory condition that commonly affects the genitalia, particularly in elderly females. This condition leads to the atrophy of the epidermis, resulting in the formation of white plaques. The most prominent feature of lichen sclerosus is the presence of white patches that may scar. Patients may also experience itching and pain during intercourse or urination.
Diagnosis of lichen sclerosus is usually made based on clinical examination, but a biopsy may be performed if atypical features are present. Management of this condition involves the use of topical steroids and emollients. Patients with lichen sclerosus are at an increased risk of developing vulval cancer, and routine follow-up is necessary to monitor for any changes.
The Royal College of Obstetricians and Gynaecologists advise against performing a skin biopsy if a diagnosis can be made on clinical examination. However, a biopsy may be necessary if the patient fails to respond to treatment or if there is a suspicion of neoplastic change. The British Association of Dermatologists also recommends a biopsy if there are atypical features or diagnostic uncertainty. Patients under routine follow-up will need a biopsy if there is a suspicion of neoplastic change, if the disease fails to respond to treatment, if there is extragenital lichen sclerosus, or if second-line therapy is to be used.
Understanding lichen sclerosus is important for early diagnosis and management of this condition. Patients with this condition should seek medical attention if they experience any symptoms or changes in their condition.
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This question is part of the following fields:
- Dermatology
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Question 8
Incorrect
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A 22-year-old female comes in for a check-up. She is currently 16 weeks pregnant and has already had her booking visit with the midwives. So far, there have been no complications related to her pregnancy. The tests conducted showed that she has a blood group of A and is Rhesus negative. What is the best course of action for managing her rhesus status?
Your Answer: Give anti-D just prior to delivery
Correct Answer: Give first dose of anti-D at 28 weeks
Explanation:NICE guidelines recommend 10 antenatal visits for first pregnancies and 7 for subsequent pregnancies if uncomplicated. The purpose of each visit is outlined, including booking visits, scans, screening for Down’s syndrome, routine care for blood pressure and urine, and discussions about labour and birth plans. Rhesus negative women are offered anti-D prophylaxis at 28 and 34 weeks. The guidelines also recommend discussing options for prolonged pregnancy at 41 weeks.
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This question is part of the following fields:
- Reproductive Medicine
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Question 9
Correct
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A 5-year-old girl is brought to the pediatrician's office by her father, who is concerned about a red rash on her arms and chest. She has been feeling sick, with cold-like symptoms preceding the rash. The rash is erythematous, macular and symmetrical to both arms and chest and is non-blanching. She is currently without fever and appears to be in good health.
What is the most probable cause?Your Answer: Henoch–Schönlein purpura
Explanation:Distinguishing Between Different Skin Conditions: A Guide for Healthcare Professionals
Henoch–Schönlein purpura, eczema, intertrigo, meningococcal disease, and systemic lupus erythematosus are all skin conditions that can present with various rashes and symptoms. It is important for healthcare professionals to be able to distinguish between these conditions in order to provide appropriate treatment.
Henoch–Schönlein purpura is an autoimmune hypersensitivity vasculitis that presents with a non-blanching rash, joint and abdominal pain, and nephritis. Eczema is characterized by areas of erythema that are blanching, dry skin with fine scales, and excoriations. Intertrigo primarily affects the flexures with erythematous patches that may progress to intense inflammation. Meningococcal disease presents with a non-blanching rash that rapidly progresses to purpura and requires immediate treatment. Systemic lupus erythematosus is rare in children and presents with a malar or butterfly rash on the face, joint pain, fever, or weight loss.
By understanding the unique features of each condition, healthcare professionals can accurately diagnose and treat their patients.
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This question is part of the following fields:
- Dermatology
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Question 10
Correct
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A 3 day old infant who was delivered via ventouse presents with a swelling on the left parietal region of the head. The swelling was not present immediately after birth and the baby is otherwise healthy. Upon examination, the swelling does not cross suture lines and the fontanelles and sutures appear normal. What is the probable diagnosis?
Your Answer: Cephalohaematoma
Explanation:A cephalohaematoma is a swelling caused by bleeding between the skull and periosteum, typically seen in the parietal region of newborns delivered with instruments. It usually appears 2-3 days after birth and does not cross suture lines, resolving over several weeks.
Caput succadeneum is a common condition in newborns immediately after birth, caused by generalised scalp oedema that crosses suture lines. It is associated with prolonged labour and resolves quickly within a few days.
Subaponeurotic haematoma is a rare and potentially life-threatening condition where bleeding occurs outside the periosteum, causing a fluctuant scalp swelling that is not limited by suture lines.
Craniosynostosis is a rare condition where cranial sutures close prematurely, leading to skull deformities that may be evident at birth and associated with genetic syndromes. The shape of the skull depends on which sutures are involved, and other clinical features include early closure of the anterior fontanelle and a raised ridge along the fused suture.
A cephalohaematoma is a swelling that appears on a newborn’s head, usually a few hours after delivery. It is caused by bleeding between the skull and periosteum, with the parietal region being the most commonly affected site. This condition may lead to jaundice as a complication and can take up to three months to resolve.
In comparison to caput succedaneum, which is another type of swelling that can occur on a newborn’s head, cephalohaematoma is more localized and does not cross suture lines. Caput succedaneum, on the other hand, is a diffuse swelling that can cross suture lines and is caused by fluid accumulation in the scalp tissue. Both conditions are usually harmless and resolve on their own, but medical attention may be necessary in severe cases.
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This question is part of the following fields:
- Paediatrics
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Question 11
Incorrect
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A 6-year-old girl is brought to see her GP by her mother. She is noted to be on the 4th centile for weight. Her mother notes that for the past few months her daughter has been tired and passes greasy foul-smelling stools three times a day. Blood tests reveal mild anaemia, positive serum IgA anti-endomysial antibody (EMA-IgA) and very elevated tissue transglutaminase (tTG) levels.
Which of the following is the most likely cause of her symptoms?
Select the SINGLE most likely cause from the list below. Select ONE option only.Your Answer:
Correct Answer: Coeliac disease
Explanation:Understanding Coeliac Disease: Symptoms, Diagnosis, and Treatment
Coeliac disease (CD) is a common autoimmune disorder that affects almost 1% of individuals in developed countries. It is triggered by gluten and related prolamins present in wheat, rye, and barley, and primarily affects the small intestine, leading to flattening of the small intestinal mucosa. CD can present in various ways, including typical GI symptoms, atypical symptoms, or no symptoms at all. Diagnosis is made through serology tests for specific autoimmune markers, and treatment involves a lifelong avoidance of gluten ingestion.
Other potential diagnoses, such as travellers’ diarrhoea, growth hormone deficiency, hypothyroidism, and severe combined immunodeficiency, have different clinical presentations and are not consistent with this patient’s symptoms. Understanding the symptoms, diagnosis, and treatment of CD is crucial for proper management and improved quality of life for affected individuals.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 12
Incorrect
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A healthy toddler is 18 months old and was born in the breech position. The toddler's mother is concerned about developmental dysplasia of the hip (DDH), as she has heard that this can be associated with breech delivery.
Which of the following is the most appropriate investigation for this toddler?Your Answer:
Correct Answer: Ultrasound scan of the hips before six weeks of age
Explanation:An ultrasound scan of the hips is recommended for all babies born in the breech position after 36 weeks of pregnancy, even if they are not born in the breech position. It is also necessary for babies born before 36 weeks in the breech position or those with a family history of hip problems in early life. This is to detect developmental dysplasia of the hip (DDH) early, which can be treated with a Pavlik harness before six months of age. Surgery may be required if non-operative treatment is not successful. An ultrasound scan should be performed before six weeks of age to ensure early diagnosis and treatment. If a baby is found to have an unstable hip joint during their newborn examination, they should have an ultrasound of the hip before two weeks of age. X-rays are not recommended for detecting DDH in infants, and ultrasound is the preferred imaging modality.
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This question is part of the following fields:
- Paediatrics
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Question 13
Incorrect
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A 3-year-old boy is brought into accident and emergency by one of the staff at the nursery that he attends. He suddenly developed facial grimacing and carpopedal spasm that morning, after a minor viral gastrointestinal infection over the past few days. On examination he also has abnormal ears, a shortened philtrum, hypertelorism, micrognathia and a heart murmur.
Which of the following is the most likely diagnosis?
Your Answer:
Correct Answer: DiGeorge's syndrome
Explanation:Understanding Rare Genetic Disorders: DiGeorge’s Syndrome and Associated Features
DiGeorge’s syndrome, also known as 22q11.2 deletion syndrome, is a rare genetic disorder that affects the development of various organs in the body. One of the primary features of this syndrome is a decreased production and function of T-cells due to an absent or poorly developed thymus, leading to susceptibility to infections. Additionally, individuals with DiGeorge’s syndrome may experience hypocalcaemic tetany due to a failure of parathyroid development, which can be exacerbated by gastrointestinal infections.
Other features of DiGeorge’s syndrome include congenital cardiac defects, particularly those involving the great vessels, and the absence of a normal thymus. Serum immunoglobulin concentrations are often normal, but antibody responses may be impaired. T-cell levels are reduced, whereas B-cell levels are normal.
In addition to these medical features, individuals with DiGeorge’s syndrome may have characteristic facial features such as retrognathia or micrognathia, a long face, high and broad nasal bridge, narrow palpebral fissures, small teeth, asymmetrical crying face, downturned mouth, short philtrum, low-set and malformed ears, hypertelorism, and a dimple on the tip of the nose.
Overall, understanding the features and implications of rare genetic disorders like DiGeorge’s syndrome is crucial for proper diagnosis and management of affected individuals.
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This question is part of the following fields:
- Immunology/Allergy
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Question 14
Incorrect
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A 45-year-old woman presents to her General Practitioner with right lower-limb pain. This is mainly localised over a red patch that has recently developed on the inner part of her thigh.
On examination, there is a well-demarcated area of erythematous skin on the patient’s thigh, which is warm and tender to touch. There are no other rashes or skin changes present in the rest of her body. Her temperature is 37.5°C and the rest of her parameters are within normal limits.
Which of the following is the most likely diagnosis?
Your Answer:
Correct Answer: Cellulitis
Explanation:Differential Diagnosis for a Lower Limb Rash: Cellulitis, Atopic Dermatitis, Contact Dermatitis, Necrobiosis Lipoidica, and Pretibial Myxedema
The patient in question is most likely suffering from cellulitis, as evidenced by the presence of erythema, warmth, tenderness, and swelling in the affected area. Cellulitis typically presents as a unilateral rash in the lower limbs, with a well-defined margin and potential skin breakdown or ulceration in severe cases. Localized lymph node swelling may also occur, and systemic symptoms such as tachycardia, fever, confusion, or respiratory distress may be present in more severe cases. It is important to examine the skin carefully for potential points of entry for pathogens, such as wounds, local skin infections, or recent injection sites.
Atopic dermatitis, on the other hand, typically presents as an itchy rash in a flexural distribution, with a history of atopy and episodic flares starting from a young age. Contact dermatitis, which can be either irritant or allergic, is characterized by erythema and may present with crusting or vesicles in rare cases. Necrobiosis lipoidica is a condition that typically occurs in diabetic patients, presenting as shiny, painless areas of yellow or red skin on the shins, often with telangiectasia. Pretibial myxedema, which occurs in patients with Graves’ disease, presents as a shiny, waxy, orange-peel texture on the shins.
In summary, a lower limb rash can have various causes, and a careful examination of the skin and consideration of the patient’s medical history can help narrow down the differential diagnosis.
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This question is part of the following fields:
- Dermatology
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Question 15
Incorrect
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A 28-year-old administrative assistant complains of pain on the thumb side of her left wrist, persisting for the past week. She also notices that her left wrist seems more swollen than her right. During the examination, she experiences discomfort over her radial styloid when her thumb is forcefully flexed.
What is the probable diagnosis?Your Answer:
Correct Answer: Tenosynovitis
Explanation:The patient is positive for Finkelstein test, indicating De Quervain’s tenosynovitis. This condition causes pain over the radial styloid when the thumb is forcefully abducted or flexed. Unlike De Quervain’s tenosynovitis, rheumatoid arthritis affects both sides of the body. Mallet thumb is an injury that causes the thumb to bend towards the palm. Carpal tunnel syndrome is caused by compression of the median nerve and results in numbness and tingling in the thumb, index, and middle fingers. Osteoarthritis is a degenerative condition that primarily affects the elderly due to mechanical wear and tear.
De Quervain’s Tenosynovitis: Symptoms, Diagnosis, and Treatment
De Quervain’s tenosynovitis is a condition that commonly affects women between the ages of 30 and 50. It occurs when the sheath containing the extensor pollicis brevis and abductor pollicis longus tendons becomes inflamed. The condition is characterized by pain on the radial side of the wrist, tenderness over the radial styloid process, and pain when the thumb is abducted against resistance. A positive Finkelstein’s test, in which the thumb is pulled in ulnar deviation and longitudinal traction, can also indicate the presence of tenosynovitis.
Treatment for De Quervain’s tenosynovitis typically involves analgesia, steroid injections, and immobilization with a thumb splint (spica). In some cases, surgical treatment may be necessary. With proper diagnosis and treatment, most patients are able to recover from this condition and resume their normal activities.
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This question is part of the following fields:
- Musculoskeletal
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Question 16
Incorrect
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A patient with pyogenic meningitis has been admitted and the husband is worried about contracting the disease. What is the recommended prophylaxis in this situation? Choose ONE option from the list provided.
Your Answer:
Correct Answer: Ciprofloxacin
Explanation:Antibiotics for Meningitis: Recommended Drugs and Dosages
Meningitis is a serious infection that affects the membranes surrounding the brain and spinal cord. Antibiotics are the mainstay of treatment for meningitis, and prophylactic antibiotics are also recommended for close contacts of infected individuals. Here are the recommended drugs and dosages for meningitis treatment and prophylaxis:
Ciprofloxacin: This antibiotic is now the preferred choice for prophylaxis in all age groups and in pregnancy. It is a single dose and readily available in pharmacies, and does not interact with oral contraceptives. It should be given to all close contacts of probable or confirmed meningococcal meningitis, with dosages ranging from 250 mg to 500 mg depending on age.
Metronidazole: This drug has no role in the treatment of acute meningitis.
Ceftriaxone: This antibiotic has good penetration into inflamed meninges and can be given via intramuscular or oral route. It can be used in monotherapy in adults under 60 years old, or in dual therapy with amoxicillin in older adults.
Co-trimoxazole: This drug is an alternative to cefotaxime or ceftriaxone in older adults, and is also used in individuals with meningitis from Listeria monocytogenes infection.
Vancomycin: This antibiotic is recommended in cases of penicillin resistance or suspected penicillin-resistant pneumococci, but should never be used in monotherapy due to doubts about its penetration into adult CSF.
Chemoprophylaxis: Close contacts of infected individuals should receive prophylactic antibiotics to prevent nasopharyngeal carriage of the organism. Ciprofloxacin is the first-line choice, with dosages ranging from 10 mg/kg to 600 mg depending on age. Rifampicin can be given as an alternative for those unable to take ciprofloxacin.
It is important to seek microbiology and public health advice if in doubt about the appropriate antibiotics and dosages for meningitis treatment and prophylaxis.
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This question is part of the following fields:
- Infectious Diseases
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Question 17
Incorrect
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An 80-year-old man with a known history of mixed type dementia (Alzheimer's and vascular) is evaluated in memory clinic due to a recent decline in his memory and cognition. His mini-mental state score is 12 and he is started on memantine. What is the mechanism of action of memantine?
Your Answer:
Correct Answer: NMDA antagonist
Explanation:Memantine is an NMDA receptor antagonist and is not a cholinesterase inhibitor like donepezil and rivastigmine. While memantine does act at the serotonin and dopamine receptors, it acts as an antagonist and agonist respectively, rather than the options given.
Managing Alzheimer’s Disease: Non-Pharmacological and Pharmacological Approaches
Alzheimer’s disease is a type of dementia that progressively affects the brain and is the most common form of dementia in the UK. To manage this condition, there are both non-pharmacological and pharmacological approaches available.
Non-pharmacological management involves offering a range of activities that promote wellbeing and are tailored to the patient’s preferences. Group cognitive stimulation therapy is recommended for patients with mild to moderate dementia, while group reminiscence therapy and cognitive rehabilitation are also options to consider.
Pharmacological management involves the use of medications. The three acetylcholinesterase inhibitors (donepezil, galantamine, and rivastigmine) are options for managing mild to moderate Alzheimer’s disease. Memantine, an NMDA receptor antagonist, is considered a second-line treatment and is recommended for patients with moderate Alzheimer’s who are intolerant of or have a contraindication to acetylcholinesterase inhibitors. It can also be used as an add-on drug to acetylcholinesterase inhibitors for patients with moderate or severe Alzheimer’s or as monotherapy in severe Alzheimer’s.
When managing non-cognitive symptoms, NICE does not recommend antidepressants for mild to moderate depression in patients with dementia. Antipsychotics should only be used for patients at risk of harming themselves or others or when the agitation, hallucinations, or delusions are causing them severe distress.
It is important to note that donepezil is relatively contraindicated in patients with bradycardia, and adverse effects may include insomnia. By utilizing both non-pharmacological and pharmacological approaches, patients with Alzheimer’s disease can receive comprehensive care and management.
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This question is part of the following fields:
- Neurology
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Question 18
Incorrect
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A 28-year-old presents to his General Practitioner with a 2-month history of pain in his right elbow. His GP suspects that the patient has lateral epicondylitis.
What examination findings would confirm the diagnosis?Your Answer:
Correct Answer: Pain worse on resisted wrist extension with the elbow extended
Explanation:Common Elbow Pain Symptoms and Their Features
Elbow pain can be caused by various conditions, each with its own set of symptoms. Here are some common elbow pain symptoms and their features:
1. Lateral Epicondylitis (Tennis Elbow)
– Pain and tenderness localized to the lateral epicondyle
– Pain worsens on resisted wrist extension with the elbow extended or supination of the forearm with the elbow extended
– Episodes typically last between six months and two years; patients tend to have acute pain for 6-12 weeks
– Pain aggravated by wrist flexion and pronation2. Medial Epicondylitis (Golfer’s Elbow)
– Pain and tenderness localized to the medial epicondyle
– Pain aggravated by wrist flexion and pronation
– Symptoms may be accompanied by numbness/tingling in the fourth and fifth fingers due to ulnar-nerve involvement3. Cubital Tunnel Syndrome
– Initially intermittent tingling in the fourth and fifth fingers
– Pain worsens when the elbow is resting on a firm surface or flexed for extended periods
– Later numbness in the fourth and fifth fingers with associated weakness4. Carpal Tunnel Syndrome
– Pain worsens when the wrists are in complete flexion for at least 30 seconds
– The Phalen test is done to investigate its presence5. Olecranon Bursitis
– Swelling over the posterior aspect of the elbow with associated pain, warmth, and erythema
– Typically affects middle-aged male patientsUnderstanding Common Symptoms of Elbow Pain
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This question is part of the following fields:
- Musculoskeletal
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Question 19
Incorrect
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A 32-year-old male patient complains of an itchy rash on his palms and genitals. He has observed the same rash around a recent scar on his forearm. During examination, the doctor notices papules with a white-lace pattern on the surface. What is the diagnosis?
Your Answer:
Correct Answer: Lichen planus
Explanation:Lichen planus is a skin condition characterized by a rash of purple, itchy, polygonal papules on the flexor surfaces of the body. The affected area may also have Wickham’s striae. Oral involvement is common. In elderly women, lichen sclerosus may present as itchy white spots on the vulva.
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.
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This question is part of the following fields:
- Dermatology
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Question 20
Incorrect
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A 27-year-old woman with a BMI of 34 kg/m² presents to your GP clinic with a small lump in her right breast. She is worried about the possibility of breast cancer, although she has noticed that the lump has decreased in size over the past two weeks. She denies any direct injury but mentions playing rugby recently. There is no family history of breast or gynaecological cancer. On examination, a small, firm, poorly mobile lump is found in the lower quadrant of the right breast.
What is the most probable diagnosis?Your Answer:
Correct Answer: Traumatic breast fat necrosis
Explanation:Traumatic breast fat necrosis may develop following a minor or unnoticed injury in women with a high body mass index, although it is crucial to investigate any lump to exclude breast cancer. Nipple discharge is a common symptom of mammary duct ectasia, while a tender lymph node in the axilla is likely to be palpable. Paget’s disease is characterized by an eczema-like appearance of the nipple, not a lump. Fibroadenoma, also known as a breast mouse, is not attached.
Understanding Fat Necrosis of the Breast
Fat necrosis of the breast is a condition that affects up to 40% of cases and is often caused by trauma. This condition can be mistaken for breast cancer due to its physical features, such as a mass that may initially increase in size. It is important to understand that fat necrosis is not cancerous and can be treated with proper care.
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This question is part of the following fields:
- Haematology/Oncology
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Question 21
Incorrect
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A 35-year-old expectant mother seeks guidance regarding the likelihood of her child inheriting polycystic kidney disease. Despite her diagnosis, she is presently in good health. Her father, who also has the condition, is currently undergoing dialysis. What is the probability that her offspring will develop the disease?
Your Answer:
Correct Answer: 50%
Explanation:Autosomal dominant polycystic kidney disease (ADPKD) is a prevalent genetic condition that affects approximately 1 in 1,000 Caucasians. The disease is caused by mutations in two genes, PKD1 and PKD2, which produce polycystin-1 and polycystin-2, respectively. ADPKD type 1 accounts for 85% of cases, while ADPKD type 2 accounts for the remaining 15%. Individuals with ADPKD develop multiple fluid-filled cysts in their kidneys, which can lead to renal failure.
To diagnose ADPKD in individuals with a positive family history, an abdominal ultrasound is typically performed. The diagnostic criteria for ultrasound include the presence of two cysts, either unilateral or bilateral, in individuals under 30 years of age, two cysts in both kidneys for those aged 30-59 years, and four cysts in both kidneys for those over 60 years of age.
Management of ADPKD may involve the use of tolvaptan, a vasopressin receptor 2 antagonist, for select patients. Tolvaptan has been recommended by NICE as an option for treating ADPKD in adults with chronic kidney disease stage 2 or 3 at the start of treatment, evidence of rapidly progressing disease, and if the company provides it with the agreed discount in the patient access scheme. The goal of treatment is to slow the progression of cyst development and renal insufficiency. An enlarged kidney with extensive cysts is a common finding in individuals with ADPKD.
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This question is part of the following fields:
- Genetics
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Question 22
Incorrect
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A 27-year-old woman who has never given birth presents to your clinic seeking contraception. She complains of experiencing extremely heavy menstrual periods and desires a long-term contraceptive option that can alleviate her heavy bleeding. What is the most appropriate contraceptive method for this patient?
Your Answer:
Correct Answer: Intrauterine system
Explanation:The Mirena coil is a contraceptive method that reduces the duration and intensity of periods and can be used for an extended period.
Intrauterine contraceptive devices include copper IUDs and levonorgestrel-releasing IUS. Both are over 99% effective. The IUD prevents fertilization by decreasing sperm motility, while the IUS prevents endometrial proliferation and thickens cervical mucus. Potential problems include heavier periods with IUDs and initial bleeding with the IUS. There is a small risk of uterine perforation, ectopic pregnancy, and infection. New IUS systems, such as Jaydess® and Kyleena®, have smaller frames and less levonorgestrel, resulting in lower serum levels and different rates of amenorrhea.
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This question is part of the following fields:
- Reproductive Medicine
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Question 23
Incorrect
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A 75-year-old man has been hospitalized with abdominal discomfort. The surgical team intends to conduct a contrast-enhanced CT scan, but they are apprehensive due to his stage 3 chronic kidney disease. Below is his most recent renal function:
Na+ 142 mmol/l
K+ 4.6 mmol/l
Urea 8.1 mmol/l
Creatinine 130 µmol/l
What is the most crucial measure in decreasing the risk of contrast-induced nephropathy?Your Answer:
Correct Answer: Intravenous 0.9% sodium chloride pre- and post-procedure
Explanation:Contrast Media Nephrotoxicity and Prevention
Contrast media nephrotoxicity is a condition where there is a 25% increase in creatinine within three days of intravascular administration of contrast media. This condition usually occurs 2-5 days after administration and is caused by various risk factors such as known renal impairment, dehydration, cardiac failure, and the use of nephrotoxic drugs. Procedures such as CT with contrast and coronary angiography/percutaneous coronary intervention (PCI) are examples that may cause contrast-induced nephropathy.
To prevent contrast-induced nephropathy, intravenous 0.9% sodium chloride at a rate of 1 mL/kg/hour for 12 hours pre- and post-procedure is recommended. Isotonic sodium bicarbonate is also supported by evidence. However, N-acetylcysteine, which was previously given, is now considered ineffective. Patients who are high-risk for contrast-induced nephropathy should have metformin withheld for at least 48 hours and until their renal function has been shown to be normal to avoid the risk of lactic acidosis.
In summary, contrast media nephrotoxicity is a condition that can occur after the administration of contrast media. It is caused by various risk factors and can be prevented by using intravenous sodium chloride or isotonic sodium bicarbonate. N-acetylcysteine is no longer recommended, and patients at high risk should have metformin withheld until their renal function is normal.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 24
Incorrect
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A 67-year-old woman presents to the Memory Clinic with a 9-month history of cognitive decline. Her daughter mentions that she has difficulty remembering basic tasks and is becoming more confused and forgetful than usual. Her daughter noticed a change in her personality and has caught her leaving the stove on and wandering outside alone on multiple occasions.
Given the likely diagnosis, which of the following is the most appropriate initial step in this patient’s management?
Select the SINGLE most appropriate management from the list below.
Your Answer:
Correct Answer: Stop drugs that may be exacerbating memory problems or confusion (anticholinergics, central nervous system drugs)
Explanation:Managing Frontotemporal Dementia: Treatment Options and Referrals
Frontotemporal dementia (FTD) is a progressive neurodegenerative disorder that affects behavior, language, and executive function. While there is no cure for FTD, management strategies can help alleviate symptoms and provide support for patients and their families.
One important step in managing FTD is to stop any drugs that may be exacerbating memory problems or confusion, such as anticholinergics or central nervous system drugs. Multidisciplinary health and social care is also crucial, involving referrals to geriatric medicine, psychiatry, psychology, social work, occupational therapy, speech and language therapy, physiotherapy, and community nursing.
However, certain treatment options should be avoided or used with caution in FTD patients. Benzodiazepines, for example, are associated with cognitive worsening and fall-related injuries. Anticholinesterase inhibitors, typically used in mild to moderate Alzheimer’s disease, have shown disappointing results in FTD patients who do not have cholinergic loss. Memantine, used in moderate to severe Alzheimer’s disease, has not been shown to be effective in FTD and may even have a detrimental effect on cognition in some individuals.
Antipsychotics should only be used cautiously and when other options have failed, as FTD patients are at higher risk of extrapyramidal side effects. Overall, a personalized and coordinated approach to FTD management is essential for optimizing patient outcomes.
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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 50-year-old woman with type 1 diabetes mellitus is seen in the diabetes clinic. Her blood tests from three months ago showed:
K+ 4.5 mmol/l
Creatinine 116 µmol/l
eGFR 47 ml/min
She was started on lisinopril to manage hypertension and protect her kidneys. The medication was titrated up to the treatment dose. Her current blood results are:
K+ 4.9 mmol/l
Creatinine 123 µmol/l
eGFR 44 ml/min
What is the most appropriate action to take in this situation?Your Answer:
Correct Answer: No action
Explanation:The slight alterations in creatinine and eGFR are within acceptable limits and do not warrant discontinuation of ACE inhibitors.
Hypertension Management in Chronic Kidney Disease
Chronic kidney disease (CKD) patients often require more than two drugs to manage hypertension. The first-line treatment is ACE inhibitors, which are particularly effective in proteinuric renal disease such as diabetic nephropathy. However, these drugs may cause a small decrease in glomerular filtration pressure (GFR) and a rise in creatinine. According to NICE guidelines, a decrease in eGFR of up to 25% or a rise in creatinine of up to 30% is acceptable, but any increase should prompt careful monitoring and exclusion of other causes such as NSAIDs. A rise greater than this may indicate underlying renovascular disease.
Furosemide is a useful antihypertensive drug in CKD patients, especially when the GFR falls below 45 ml/min. It also helps to lower serum potassium levels. However, high doses are usually required, and if the patient becomes dehydrated due to conditions such as gastroenteritis, the drug should be temporarily stopped. The NKF K/DOQI guidelines suggest a lower cut-off of less than 30 ml/min. Overall, hypertension management in CKD patients requires careful monitoring and individualized treatment plans.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 26
Incorrect
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A 55-year-old man visits the clinic with concerns about his worsening haemorrhoids. He reports having to manually push them back in after bowel movements.
Which class of haemorrhoids is most likely present?Your Answer:
Correct Answer: Grade III
Explanation:Understanding the Grading System for Hemorrhoids
Hemorrhoids are a common condition that affects many people. To help diagnose and treat this condition, clinicians use a grading system to classify the severity of the hemorrhoids. The grading system proposed by Banov et al. in 1985 is the most commonly used system.
Grade I hemorrhoids are the mildest form and only project into the anal canal. They often bleed but do not prolapse. Grade II hemorrhoids may protrude beyond the anal verge with straining or defecating, but reduce spontaneously when straining ceases. Grade III hemorrhoids protrude spontaneously or with straining and require manual reduction. Grade IV hemorrhoids are the most severe and chronically prolapse. They cannot be reduced and may present with acute thrombosis or strangulation. These lesions usually contain both internal and external components.
The grading system helps clinicians correlate symptoms with therapeutic approaches. For example, grade I and II hemorrhoids may be treated with conservative measures such as dietary changes and topical medications. Grade III and IV hemorrhoids may require more invasive treatments such as rubber band ligation or surgery.
In conclusion, understanding the grading system for hemorrhoids is important for both patients and clinicians. It helps guide treatment decisions and ensures the best possible outcome for those affected by this condition.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 27
Incorrect
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A 28-year-old patient complains of a painful bump on their eyelid. The lump has been there for about four days and is gradually getting bigger.
During the examination, a tender, smooth lump is observed, measuring roughly 2 mm in size, emerging from the outer edge of the left upper eyelid. The eye is not inflamed, and there is no periorbital or orbital redness, and the patient's visual acuity is normal.
What is the best course of action for managing this condition?Your Answer:
Correct Answer: Provide advice on application of hot compresses and simple analgesia
Explanation:Management of Stye or Hordeolum
A stye or hordeolum is an acute and painful swelling of the eyelid caused by inflammation in an eyelash follicle. It usually presents unilaterally and can take a few days to develop. While it does not affect visual acuity, it can cause watery eyes. The first-line management for a stye is the application of warm compresses a few times a day, which can help the stye resolve or drain. However, if symptoms do not improve, referral to Eye Casualty for incision and drainage may be necessary. Topical antibiotics are not recommended in the absence of conjunctivitis, and systemic antibiotics are not indicated unless there are signs of cellulitis over the eyelid. Therefore, simple analgesia and warm compresses are the recommended management for a stye or hordeolum.
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This question is part of the following fields:
- Ophthalmology
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Question 28
Incorrect
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A 68-year-old man who has recently had a stroke is here for a follow-up appointment. He explains that he was watching a game with his son when he suddenly lost feeling on the left side of his body. Emergency services were called and he was taken to the hospital where a CT scan confirmed a right-sided ischemic stroke. He has no other medical history. What antiplatelet medication should he be prescribed after the stroke?
Your Answer:
Correct Answer: Aspirin 300 mg daily for 2 weeks then clopidogrel 75 mg daily lifelong
Explanation:After a stroke, all patients should receive an antiplatelet medication, unless they require an anticoagulant. As per NICE guidelines, individuals with confirmed ischaemic stroke through brain imaging should be given 300 mg of aspirin daily for two weeks. Afterward, long-term treatment with 75 mg of clopidogrel is recommended, provided it is well-tolerated and not contraindicated. If clopidogrel is not suitable, modified-release dipyridamole with low-dose aspirin should be administered.
Latest Guidance on Antiplatelets
Antiplatelets are medications that prevent blood clots from forming by inhibiting platelet aggregation. The most recent guidelines recommend different antiplatelet regimens depending on the diagnosis. For acute coronary syndrome, aspirin and ticagrelor are recommended for 12 months, followed by lifelong aspirin and clopidogrel if aspirin is contraindicated. For percutaneous coronary intervention, lifelong aspirin and prasugrel or ticagrelor for 12 months are recommended, with lifelong clopidogrel if aspirin is contraindicated. For TIA and ischaemic stroke, lifelong clopidogrel is recommended as first-line treatment, with lifelong aspirin and dipyridamole as second-line treatment. For peripheral arterial disease, lifelong clopidogrel is recommended as first-line treatment, with lifelong aspirin as second-line treatment. It is important to follow these guidelines to ensure the best possible outcomes for patients.
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This question is part of the following fields:
- Neurology
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Question 29
Incorrect
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A 25-year-old woman in her second trimester of pregnancy complains of a malodorous vaginal discharge. Upon examination, it is determined that she has bacterial vaginosis. What is the best initial course of action?
Your Answer:
Correct Answer: Oral metronidazole
Explanation:Bacterial vaginosis during pregnancy can lead to various pregnancy-related issues, such as preterm labor. In the past, it was advised to avoid taking oral metronidazole during the first trimester. However, current guidelines suggest that it is safe to use throughout the entire pregnancy. For more information, please refer to the Clinical Knowledge Summary provided.
Bacterial vaginosis (BV) is a condition where there is an overgrowth of anaerobic organisms, particularly Gardnerella vaginalis, in the vagina. This leads to a decrease in the amount of lactobacilli, which produce lactic acid, resulting in an increase in vaginal pH. BV is not a sexually transmitted infection, but it is commonly seen in sexually active women. Symptoms include a fishy-smelling vaginal discharge, although some women may not experience any symptoms at all. Diagnosis is made using Amsel’s criteria, which includes the presence of thin, white discharge, clue cells on microscopy, a vaginal pH greater than 4.5, and a positive whiff test. Treatment involves oral metronidazole for 5-7 days, with a cure rate of 70-80%. However, relapse rates are high, with over 50% of women experiencing a recurrence within 3 months. Topical metronidazole or clindamycin may be used as alternatives.
Bacterial vaginosis during pregnancy can increase the risk of preterm labor, low birth weight, chorioamnionitis, and late miscarriage. It was previously recommended to avoid oral metronidazole in the first trimester and use topical clindamycin instead. However, recent guidelines suggest that oral metronidazole can be used throughout pregnancy. The British National Formulary (BNF) still advises against using high-dose metronidazole regimes. Clue cells, which are vaginal epithelial cells covered with bacteria, can be seen on microscopy in women with BV.
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This question is part of the following fields:
- Reproductive Medicine
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Question 30
Incorrect
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A 65-year-old woman with a history of hypertension and heart failure presents with atrial fibrillation. She is stable with a ventricular rate of 70. Which of the following drug options would be the most suitable for her?
Your Answer:
Correct Answer: Warfarin or direct oral anticoagulant (DOAC)
Explanation:Treatment Options for Atrial Fibrillation: Warfarin, DOACs, Aspirin, Digoxin, Furosemide, and Lidocaine
Patients with atrial fibrillation and a CHA2DS2-VASC score of 4 require anticoagulation to reduce the risk of a CVA. The two main options are warfarin and DOACs, but the choice depends on other co-morbidities and patient preference. Before starting warfarin, patients should be referred to the Anticoagulation Clinic and screened for contraindications.
Aspirin has no benefit in atrial fibrillation, and digoxin should only be used for short-term rate control due to evidence of increased mortality with long-term use. Furosemide can help with symptoms and edema in heart failure but does not improve mortality. Lidocaine is only appropriate for ventricular arrhythmias in unstable patients and requires specialist support.
In summary, the treatment options for atrial fibrillation vary depending on the patient’s individual circumstances and should be carefully considered by healthcare professionals.
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This question is part of the following fields:
- Cardiovascular
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