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Question 1
Correct
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A 7-year-old boy is brought to the Emergency Department with a fever, cough, coryza and conjunctivitis. He has a rash that looks like tight clusters of small red spots. He also has some grey-white spots inside his mouth. Prior to the last five days, he is normally a fit and well child who does not take any regular medications. He has not had any vaccinations. His temperature is 38 °C and his other observations are within normal limits.
What would be the next most appropriate step in this patient’s management?
Your Answer: Discharge home with advice regarding supportive care
Explanation:Supportive Care for Children with Measles: Discharge Advice
Measles is a highly contagious viral illness that can be prevented through vaccination. If a child is diagnosed with measles, they will present with symptoms such as fever, cough, and a rash. The period of contagiousness is estimated to be from five days before the appearance of the rash to four days afterwards. There is no specific treatment for uncomplicated measles, but supportive care can be provided to manage symptoms.
Discharge advice for parents of a child with measles should include information on potential complications and when to seek medical attention. It is important to monitor the child’s symptoms and provide antipyretics and fluids as needed. If a secondary bacterial infection arises, antibiotics may be required. Immunoglobulins are not given as a treatment for acute measles, but vaccination is recommended as a preventative measure. Aspirin should not be given to children with measles due to the risk of Reye syndrome. Paracetamol and ibuprofen can be given for symptomatic relief. With proper supportive care, most children with measles will recover without complications.
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This question is part of the following fields:
- Immunology/Allergy
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Question 2
Incorrect
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A 72-year-old man with a history of atrial fibrillation and essential hypertension visits his GP for a routine blood pressure check. His blood pressure reading is 152/92 and he wants to know if there are any other ways to reduce his risk of stroke. He is not currently taking any medication.
What is the most suitable treatment advice to give him?Your Answer: Aspirin
Correct Answer: Warfarin / NOAC
Explanation:Treatment options for stroke prevention in atrial fibrillation patients: Understanding CHADS-VASc score
Atrial fibrillation (AF) patients with a CHADS-VASc score of 3 or higher require treatment with either warfarin or a novel oral anticoagulant (NOAC) to prevent stroke. Aspirin, clopidogrel, low-molecular-weight heparin, and strict dietary modification are not recommended for stroke prevention in AF patients.
The CHADS-VASc score is used to calculate the risk of stroke in AF patients. The score includes factors such as congestive cardiac failure, hypertension, age, diabetes mellitus, previous stroke or transient ischaemic attack, vascular disease, and sex category. Men with a score of 2 or higher are considered to be at high risk of stroke and should start treatment with warfarin or a NOAC. Men with a score of 1 are considered to be at moderate risk and should consider anticoagulation. Women aged <65 years with no other risk factors are considered to be at low risk and do not require anticoagulation. Clopidogrel is an oral antiplatelet agent used in the prevention of atherosclerotic events in patients with coronary artery disease, peripheral arterial disease, and cerebrovascular disease. It is not recommended for stroke prevention in AF patients. Strict dietary modification is not an appropriate treatment for AF and essential hypertension. Low molecular weight heparins (LMWHs) are not used in the management of AF. They are commonly used in the prevention and treatment of venous thromboembolism, unstable angina, and acute myocardial infarction.
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This question is part of the following fields:
- Cardiovascular
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Question 3
Correct
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A 50-year-old female comes to the doctor's office complaining of progressive paraesthesia in her fingers, toes, and peri-oral area for the past two weeks. She also experiences muscle cramps and spasms. The patient had a thyroidectomy for Graves' disease recently but has no other health issues or drug allergies. What can be expected from this patient's ECG results, considering the probable diagnosis?
Your Answer: Isolated QTc elongation
Explanation:Following thyroid surgery, a patient is experiencing paraesthesia, cramps, and spasms, which are likely due to hypocalcemia resulting from damage to the parathyroid glands. The most common ECG change associated with this condition is isolated QTc elongation, while dysrhythmias are rare. Alternating QRS amplitude is not associated with this condition and is instead linked to pericardial effusion. Isolated QTc shortening is also incorrect as it is typically associated with hypercalcemia, which can be caused by hyperparathyroidism and malignancy. The combination of T wave inversion, QTc prolongation, and visible U waves is associated with hypokalemia, which can be caused by vomiting, thiazide use, and Cushing’s syndrome. Similarly, the combination of tall, peaked T waves, QTc shortening, and ST-segment depression is associated with hyperkalemia, which can be caused by Addison’s disease, rhabdomyolysis, acute kidney injury, and potassium-sparing diuretics.
Complications of Thyroid Surgery: An Overview
Thyroid surgery is a common procedure that involves the removal of all or part of the thyroid gland. While the surgery is generally safe, there are potential complications that can arise. These complications can be anatomical, such as damage to the recurrent laryngeal nerve, which can result in voice changes or difficulty swallowing. Bleeding is another potential complication, which can be particularly dangerous in the confined space of the neck and can lead to respiratory problems due to swelling. Additionally, damage to the parathyroid glands, which are located near the thyroid, can result in hypocalcaemia, a condition in which the body has low levels of calcium. It is important for patients to be aware of these potential complications and to discuss them with their healthcare provider before undergoing thyroid surgery.
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This question is part of the following fields:
- ENT
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Question 4
Correct
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A 7-week-old male infant was presented to the GP clinic by his anxious mother. She complains of a 2-week history of inadequate feeding and weight gain, accompanied by fast breathing, especially during feeding. The mother became extremely worried when she observed a bluish tint on her baby's skin this morning.
What is the probable diagnosis?Your Answer: Tetralogy of Fallot
Explanation:TOF is the primary reason for cyanotic congenital heart disease, which usually manifests at 1-2 months of age. While transposition of the great arteries is also a significant cause of this condition, it typically presents within the first 24 hours of life. Ventricular septal defect and atrioventricular septal defect are not associated with cyanotic congenital heart disease.
Understanding Tetralogy of Fallot
Tetralogy of Fallot (TOF) is a congenital heart disease that results from the anterior malalignment of the aorticopulmonary septum. It is the most common cause of cyanotic congenital heart disease, and it typically presents at around 1-2 months, although it may not be detected until the baby is 6 months old. The condition is characterized by four features, including ventricular septal defect (VSD), right ventricular hypertrophy, right ventricular outflow tract obstruction, and overriding aorta. The severity of the right ventricular outflow tract obstruction determines the degree of cyanosis and clinical severity.
Other features of TOF include cyanosis, which may cause episodic hypercyanotic ‘tet’ spells due to near occlusion of the right ventricular outflow tract. These spells are characterized by tachypnea and severe cyanosis that may occasionally result in loss of consciousness. They typically occur when an infant is upset, in pain, or has a fever, and they cause a right-to-left shunt. Additionally, TOF may cause an ejection systolic murmur due to pulmonary stenosis, and a right-sided aortic arch is seen in 25% of patients. Chest x-ray shows a ‘boot-shaped’ heart, while ECG shows right ventricular hypertrophy.
The management of TOF often involves surgical repair, which is usually undertaken in two parts. Cyanotic episodes may be helped by beta-blockers to reduce infundibular spasm. However, it is important to note that at birth, transposition of the great arteries is the more common lesion as patients with TOF generally present at around 1-2 months. Understanding the features and management of TOF is crucial for healthcare professionals to provide appropriate care and treatment for affected infants.
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This question is part of the following fields:
- Paediatrics
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Question 5
Incorrect
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A 35-year-old woman who is 8 weeks pregnant visits the early pregnancy unit drop-in clinic complaining of dysuria and increased urinary frequency for the past 2 days. The results of her urine dipstick test are as follows: Leucocytes +++, Nitrites +, Protein -, pH 5.0, Blood +, Ketones -, Glucose -. What is the recommended treatment for her condition?
Your Answer: 3-day course of cefalexin
Correct Answer: 7-day course of nitrofurantoin
Explanation:The recommended first-line treatment for lower UTI in pregnant women who are not at term is a 7-day course of nitrofurantoin. However, nitrofurantoin should be avoided in women who are close to term due to the risk of neonatal haemolysis. It is important to promptly and appropriately treat UTI in pregnancy as it is associated with pre-term delivery and low-birthweight. Amoxicillin and cefalexin are second-line options, but local guidelines may vary. It is important to note that a 3-day course of nitrofurantoin is not recommended according to NICE guidelines.
Urinary tract infections (UTIs) are common in adults and can affect different parts of the urinary tract. The management of UTIs depends on various factors such as the patient’s age, gender, and pregnancy status. For non-pregnant women, local antibiotic guidelines should be followed if available. Trimethoprim or nitrofurantoin for three days are recommended by NICE Clinical Knowledge Summaries. However, if the patient is aged over 65 years or has visible or non-visible haematuria, a urine culture should be sent. Pregnant women with UTIs should be treated with nitrofurantoin, amoxicillin, or cefalexin for seven days. Trimethoprim should be avoided during pregnancy as it is teratogenic in the first trimester. Asymptomatic bacteriuria in pregnant women should also be treated to prevent progression to acute pyelonephritis. Men with UTIs should be offered a seven-day course of trimethoprim or nitrofurantoin unless prostatitis is suspected. A urine culture should be sent before antibiotics are started. Catheterised patients should not be treated for asymptomatic bacteria, but if symptomatic, a seven-day course of antibiotics should be given. Acute pyelonephritis requires hospital admission and treatment with a broad-spectrum cephalosporin or quinolone for 10-14 days. Referral to urology is not routinely required for men who have had one uncomplicated lower UTI.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 6
Correct
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A 57-year-old man presents to the Emergency Department with a one-day history of blurring of vision and headache. He tells you there is no pain on touching the scalp, or when eating and chewing food.
He has a past medical history of hypertension and type II diabetes mellitus, which is well controlled with metformin.
He tells you that his uncle died of brain cancer and he is afraid that he may have the same condition.
On examination, his visual acuity is 6/18 in both eyes. On dilated fundoscopy, you see some arterioles narrower than others. There are also venules being compressed by arterioles. There is optic disc swelling in both eyes with some exudates lining up like a star at the macula. There is also some dot-and-blot and flame-shaped haemorrhages.
His pulse is 80 beats per minute, while his blood pressure (BP) is 221/119 mmHg. His temperature is 37 °C, while his respiratory rate is 14 breaths per minute. His oxygen saturations are 98% on room air.
What is the most likely diagnosis?Your Answer: Hypertensive retinopathy
Explanation:Differentiating Hypertensive Retinopathy from Other Eye Conditions: A Case Study
The patient in question presented with a highly raised blood pressure and complained of headache and blurring of vision. Fundoscopy revealed bilateral optic disc swelling, which is a typical feature of hypertensive retinopathy. However, other conditions such as giant-cell arteritis, age-related macular degeneration, intracranial space-occupying lesion, and proliferative diabetic retinopathy were also considered.
Giant-cell arteritis was ruled out due to the absence of scalp tenderness and jaw claudication. Age-related macular degeneration was also unlikely as there were no drusen or choroidal neovascularisation present. While an intracranial space-occupying lesion was a possibility, the lack of accompanying symptoms such as early-morning vomiting and weight loss made it less likely. Proliferative diabetic retinopathy was also ruled out as there were no new vessels at the disc or elsewhere.
In conclusion, the patient’s symptoms and fundoscopy findings strongly suggest a diagnosis of hypertensive retinopathy. It is important to differentiate this condition from other eye conditions to ensure appropriate treatment and management.
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This question is part of the following fields:
- Ophthalmology
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Question 7
Correct
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A woman in her early thirties visits your GP clinic with a plan to conceive a baby in a year's time. She has barrister exams scheduled for this year and prefers not to get pregnant before that. However, she desires to conceive soon after her exams. Which contraceptive method is commonly linked with a prolonged delay in fertility restoration?
Your Answer: Depo-Provera
Explanation:Condoms act as a barrier contraceptive and do not have any impact on ovulation, therefore they do not cause any delay in fertility. The intrauterine system (IUS) functions by thickening cervical mucous and may prevent ovulation in some women, but most women still ovulate. Once the IUS is removed, most women regain their fertility immediately.
The combined oral contraceptive pill may postpone the return to a normal menstrual cycle in some women, but the majority of them can conceive within a month of discontinuing it. The progesterone-only pill is less likely to delay the return to a normal cycle as it does not contain oestrogen.
Depo-Provera can last up to 12 weeks, and it may take several months for the body to return to a normal menstrual cycle, which can delay fertility. As a result, it is not the most suitable method for a woman who wants to resume ovulatory cycles immediately.
Injectable Contraceptives: Depo Provera
Injectable contraceptives are a popular form of birth control in the UK, with Depo Provera being the main option available. This contraceptive contains 150mg of medroxyprogesterone acetate and is administered via intramuscular injection every 12 weeks. It can be given up to 14 weeks after the last dose without the need for extra precautions. The primary method of action is by inhibiting ovulation, while secondary effects include cervical mucus thickening and endometrial thinning.
However, there are some disadvantages to using Depo Provera. Once the injection is given, it cannot be reversed, and there may be a delayed return to fertility of up to 12 months. Adverse effects may include irregular bleeding and weight gain, and there is a potential increased risk of osteoporosis. It should only be used in adolescents if no other method of contraception is suitable.
It is important to note that there are contraindications to using Depo Provera, such as current breast cancer (UKMEC 4) or past breast cancer (UKMEC 3). While Noristerat is another injectable contraceptive licensed in the UK, it is rarely used in clinical practice and is given every 8 weeks. Overall, injectable contraceptives can be an effective form of birth control, but it is important to weigh the potential risks and benefits before deciding on this method.
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This question is part of the following fields:
- Reproductive Medicine
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Question 8
Correct
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A 1-month-old infant presents with low-set ears, rocker bottom feet, and overlapping of fingers. What is the probable diagnosis?
Your Answer: Edward's syndrome
Explanation:Edward’s syndrome is characterized by micrognathia, low-set ears, rocker bottom feet, and overlapping of fingers, which are present at birth.
Childhood syndromes are a group of medical conditions that affect children and are characterized by a set of common features. Patau syndrome, also known as trisomy 13, is a syndrome that is characterized by microcephaly, small eyes, cleft lip/palate, polydactyly, and scalp lesions. Edward’s syndrome, also known as trisomy 18, is characterized by micrognathia, low-set ears, rocker bottom feet, and overlapping of fingers. Fragile X syndrome is characterized by learning difficulties, macrocephaly, long face, large ears, and macro-orchidism. Noonan syndrome is characterized by a webbed neck, pectus excavatum, short stature, and pulmonary stenosis. Pierre-Robin syndrome is characterized by micrognathia, posterior displacement of the tongue, and cleft palate. Prader-Willi syndrome is characterized by hypotonia, hypogonadism, and obesity. William’s syndrome is characterized by short stature, learning difficulties, friendly, extrovert personality, and transient neonatal hypercalcaemia. Cri du chat syndrome, also known as chromosome 5p deletion syndrome, is characterized by a characteristic cry, feeding difficulties and poor weight gain, learning difficulties, microcephaly and micrognathism, and hypertelorism. It is important to note that Treacher-Collins syndrome is similar to Pierre-Robin syndrome, but it is autosomal dominant and usually has a family history of similar problems.
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This question is part of the following fields:
- Paediatrics
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Question 9
Incorrect
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An 82-year-old man presents to his General Practitioner (GP) with fatigue, lethargy, weight loss and night sweats for the past six weeks. Clinical examination is unremarkable. His past medical history includes ischaemic heart disease and hypertension. His GP orders a set of blood tests. The full blood count results are as follows:
Investigation Result Normal value
Haemoglobin (Hb) 135 g/l 135–175 g/l
White Blood Cells 21.2 × 109/l 4–11 × 109/l
Neutrophils 2.8 ×109/l 2.5–7.58 ×109/l
Lymphocytes 18.2 × 109/l 1.5–3.5× 109/l
Platelets 160 g/l 150–400× 109/l
What is the most likely diagnosis?Your Answer: Lymphoma
Correct Answer: Chronic lymphocytic leukaemia (CLL)
Explanation:Differential diagnosis for lymphocytosis in an elderly patient with vague symptoms
Chronic lymphocytic leukaemia (CLL) is the most likely cause of lymphocytosis in an elderly patient who presents with vague symptoms such as weight loss, night sweats and fatigue for six weeks. CLL is one of the most common types of leukaemia in adults, typically occurring during or after middle age and rarely in children.
Other possible diagnoses can be ruled out based on additional clinical features. Patients with HIV tend to have lymphopenia, not lymphocytosis. Lymphomas usually present with an enlargement of a lymph node, which is not reported in this case. Patients with polymyalgia rheumatica tend to have a normal leukocyte count, with some cases having increased estimated sedimentation rate and/or C-reactive protein. A transient viral illness would be an unlikely cause of lymphocytosis in an elderly person with persistent symptoms.
Therefore, CLL should be considered as the most likely diagnosis in this case, and further tests such as flow cytometry and bone marrow biopsy may be needed to confirm the diagnosis and determine the stage of the disease. Treatment options for CLL depend on the stage and other factors such as age and overall health, and may include watchful waiting, chemotherapy, immunotherapy, or targeted therapy.
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This question is part of the following fields:
- Haematology/Oncology
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Question 10
Incorrect
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You are reviewing an elderly patient with difficult-to-treat angina and consider that a trial of treatment with nicorandil may be appropriate.
Which of the following statements is true about the anti-anginal drug nicorandil?
Your Answer: It increases ventricular filling pressures
Correct Answer: Oral ulceration is an unwanted effect
Explanation:Understanding the Effects and Side Effects of Nicorandil
Nicorandil is a medication that is commonly used to treat angina pectoris, a condition characterized by chest pain or discomfort caused by reduced blood flow to the heart. While it is generally well-tolerated, there are some potential side effects that patients should be aware of.
One of the less common side effects of nicorandil is stomatitis and oral ulceration. This can be uncomfortable and may require medical attention. However, most patients do not experience this side effect.
Nicorandil works by relaxing vascular smooth muscle, which reduces ventricular filling pressure and myocardial workload. This can be beneficial for patients with angina, but it can also cause hypotension (low blood pressure) in some cases.
Another mechanism of action for nicorandil is its ability to activate ATP-dependent potassium channels in the mitochondria of the myocardium. This can help to improve cardiac function and reduce the risk of ischemia (lack of oxygen to the heart).
The most common side effect of nicorandil therapy is headache, which affects up to 48% of patients. This side effect is usually transient and can be managed by starting with a lower initial dose. Patients who are susceptible to headaches should be monitored closely.
Finally, it is important to note that concomitant use of sildenafil (Viagra) with nicorandil should be avoided. This is because sildenafil can significantly enhance the hypotensive effect of nicorandil, which can be dangerous for some patients.
In summary, nicorandil is a useful medication for treating angina, but patients should be aware of its potential side effects and should always follow their doctor’s instructions for use.
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This question is part of the following fields:
- Pharmacology/Therapeutics
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Question 11
Incorrect
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A 54-year-old man comes to his GP for a diabetes check-up. He has a past medical history of type 2 diabetes and is currently on one diabetes medication (500mg metformin BD). He reports no adverse effects from this treatment. His most recent retinopathy screening was unremarkable. You draw blood to assess his HbA1c levels.
What is the recommended target HbA1c for this patient?Your Answer: 42-47 mmol/mol
Correct Answer: 48 mmol/mol
Explanation:The recommended HbA1c goal for individuals with type 2 diabetes mellitus is 48 mmol/mol. According to NICE guidelines, this target is appropriate for patients who are managing their condition through lifestyle changes or a single antidiabetic medication. However, if a patient is prescribed a second medication or is taking a medication that increases the risk of hypoglycaemia (such as a sulphonylurea), the target may be adjusted to 53 mmol/mol. It is important to note that the HbA1c threshold for changing medications may differ from the target HbA1c level.
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 12
Correct
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A 7-year-old boy presents to the emergency department with a non-painful, partially rigid erection. He mentions noticing it after playing at school in the morning but did not inform anyone. His mother noticed the erection while helping him get ready for his evening soccer practice. The child has no medical or surgical history and is not on any regular medications. What is the initial investigation that should be performed in this case?
Your Answer: Cavernosal blood gas
Explanation:Cavernosal blood gas analysis is a crucial investigation for patients presenting with priapism. In this case, the patient has a partially erect, non-painful penis that has persisted for over 4 hours, indicating non-ischaemic priapism. This type of priapism is caused by large volume arterial inflow to the penis from trauma or congenital malformation. Confirming whether the priapism is ischaemic or non-ischaemic through cavernosal blood gas analysis is essential for appropriate management. Ischaemic priapism is a medical emergency that requires aspiration of blood from the cavernosa, while non-ischaemic priapism can be managed with observation initially. In paediatric patients, a doppler ultrasound may be a better alternative to cavernosal blood gases due to the potential trauma of the procedure.
A CT pelvis is not recommended in this case as it would expose the child to unnecessary radiation. Instead, a doppler ultrasound can be used to investigate the arterial/venous blood flow in the penis. A clotting screen may be useful if the patient has a history of bleeding problems or a family history of haemoglobinopathies. However, it should not delay cavernosal blood gas analysis as it is crucial to confirm the type of priapism. Testicular ultrasound is not a useful imaging modality for investigating priapism. If an imaging modality is required to assess penile blood flow, a doppler ultrasound is the preferred option.
Understanding Priapism: Causes, Symptoms, and Management
Priapism is a medical condition characterized by a persistent penile erection that lasts longer than four hours and is not associated with sexual stimulation. There are two types of priapism: ischaemic and non-ischaemic, each with a different pathophysiology. Ischaemic priapism is caused by impaired vasorelaxation, resulting in reduced vascular outflow and trapping of de-oxygenated blood within the corpus cavernosa. Non-ischaemic priapism, on the other hand, is due to high arterial inflow, often caused by fistula formation due to congenital or traumatic mechanisms.
Priapism can affect individuals of all ages, with a bimodal distribution of age at presentation, with peaks between 5-10 years and 20-50 years of age. The incidence of priapism has been estimated at up to 5.34 per 100,000 patient-years. There are various causes of priapism, including idiopathic, sickle cell disease or other haemoglobinopathies, erectile dysfunction medication, trauma, and drug use (both prescribed and recreational).
Patients with priapism typically present acutely with a persistent erection lasting over four hours and pain localized to the penis. A history of haemoglobinopathy or medication use may also be present. Cavernosal blood gas analysis and Doppler or duplex ultrasonography can be used to differentiate between ischaemic and non-ischaemic priapism and assess blood flow within the penis. Treatment for ischaemic priapism is a medical emergency and includes aspiration of blood from the cavernosa, injection of a saline flush, and intracavernosal injection of a vasoconstrictive agent. Non-ischaemic priapism, on the other hand, is not a medical emergency and is usually observed as a first-line option.
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This question is part of the following fields:
- Reproductive Medicine
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Question 13
Correct
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You are an F2 treating an 8 year-old patient with acute epiglottitis in the emergency department. Which is the most appropriate initial management?
Your Answer: Call for an anaesthetist
Explanation:Acute epiglottitis is a medical emergency that requires prompt management to prevent airway obstruction. It is caused by inflammation of the epiglottis and is most common in children. Symptoms include fever, sore throat, difficulty swallowing, and respiratory distress. The most severe cases can lead to complete airway obstruction, which can be fatal.
The most important initial step in management is to call for an anaesthetist to intubate the child. Attempting to administer treatment via a facemask or examining the child’s throat can cause distress and increase the risk of complete airway obstruction. The anaesthetist should be present during any examination or treatment to ensure the safety of the child.
In summary, acute epiglottitis is a medical emergency that requires prompt management to prevent airway obstruction. Calling for an anaesthetist to intubate the child is the most important initial step in management. Any examination or treatment should be done with the anaesthetist present to ensure the safety of the child.
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This question is part of the following fields:
- Paediatrics
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Question 14
Correct
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You are asked to assess a 76-year-old man on the surgical ward. The nursing staff has documented his blood glucose level at 2.4mmol/L. He is recuperating after undergoing surgery for a hip fracture. He has a medical history of hypertension, diabetes, and chronic kidney disease.
During your examination, he appears somewhat restless but coherent enough to respond to your inquiries. His heart rate is 78 bpm, and his blood pressure is 134/82 mmHg.
What would be the most appropriate initial treatment?Your Answer: Glucogel, orally
Explanation:Dextrose IV is not the recommended treatment for correcting hypoglycemia. If the patient is conscious, a fast-acting glucose liquid should be given. However, if the patient is unconscious or unable to swallow, subcutaneous or intramuscular injection of glucagon may be necessary. While a sandwich can be helpful after treating the hypoglycemic episode, it is not a quick-acting carbohydrate and should not be used in the acute phase.
Understanding Hypoglycaemia: Causes, Symptoms, and Management
Hypoglycaemia is a condition characterized by low blood sugar levels, which can lead to a range of symptoms and complications. There are several possible causes of hypoglycaemia, including insulinoma, self-administration of insulin or sulphonylureas, liver failure, Addison’s disease, and alcohol consumption. The physiological response to hypoglycaemia involves hormonal and sympathoadrenal responses, which can result in a range of symptoms such as sweating, shaking, hunger, weakness, confusion, and even convulsions or coma in severe cases.
It is important to note that blood glucose levels and the severity of symptoms are not always correlated, especially in patients with diabetes. Blood glucose concentrations below 3.3 mmol/L can cause autonomic symptoms, while concentrations below 2.8 mmol/L can cause neuroglycopenic symptoms. Management of hypoglycaemia depends on the severity of the symptoms and the setting in which it occurs. In the community, oral glucose or quick-acting carbohydrates may be given, while in a hospital setting, subcutaneous or intramuscular injection of glucagon or intravenous glucose solution may be necessary.
In summary, hypoglycaemia is a serious condition that requires prompt recognition and management to prevent complications. Understanding the causes, symptoms, and appropriate management strategies can help individuals with diabetes and healthcare professionals to effectively manage this condition.
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This question is part of the following fields:
- Endocrinology/Metabolic Disease
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Question 15
Incorrect
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A 16-year-old female comes to the clinic complaining of a painful and itchy rash that has rapidly worsened in the last 12 hours. She has a history of atopic dermatitis and hayfever, which have been treated with emollients. Upon examination, she has a monomorphic rash with punched out erosions on her cheeks and bilateral dorsal wrists. The doctors admit her for observation and IV antivirals. What is the most likely pathogen responsible for her condition?
Your Answer: Coxsackie virus A
Correct Answer: Herpes simplex 1
Explanation:Eczema herpeticum is a skin infection primarily caused by herpes simplex virus (HSV) and, in rare cases, coxsackievirus. Herpes zoster leads to chickenpox, roseola is caused by HHV 6, and molluscum contagiosum is caused by poxvirus.
Understanding Eczema Herpeticum
Eczema herpeticum is a serious skin infection caused by herpes simplex virus 1 or 2. It is commonly observed in children with atopic eczema and is characterized by a rapidly progressing painful rash. The infection can be life-threatening, which is why it is important to seek medical attention immediately.
During examination, doctors typically observe monomorphic punched-out erosions, which are circular, depressed, and ulcerated lesions that are usually 1-3 mm in diameter. Due to the severity of the infection, children with eczema herpeticum should be admitted to the hospital for intravenous aciclovir treatment. It is important to understand the symptoms and seek medical attention promptly to prevent any complications.
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This question is part of the following fields:
- Dermatology
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Question 16
Incorrect
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A 16-year-old girl visits her general practitioner with worries about never having experienced a menstrual period. Upon examination, she displays minimal pubic and axillary hair growth and underdeveloped breast tissue for her age. She has a normal height and weight and no significant medical history. A negative beta-HCG test prompts the GP to order blood tests, revealing high levels of FSH and LH. What is the probable cause of her amenorrhoea?
Your Answer: Imperforate hymen
Correct Answer: Gonadal dysgenesis
Explanation:A young woman who has never had a menstrual period before and has underdeveloped secondary sexual characteristics presents with raised FSH and LH levels. The most likely cause of her primary amenorrhoea is gonadal dysgenesis, which can be seen in syndromes such as Turner’s syndrome. In this condition, the gonads are atypically developed and may be functionless, resulting in the absence of androgen production in response to FSH and LH. This leads to underdeveloped secondary sexual characteristics and primary amenorrhoea. Asherman syndrome, imperforate hymen, Kallmann syndrome, and pregnancy are incorrect answers.
Understanding Amenorrhoea: Causes, Investigations, and Management
Amenorrhoea is a condition characterized by the absence of menstrual periods in women. It can be classified into two types: primary and secondary. Primary amenorrhoea occurs when menstruation fails to start by the age of 15 in girls with normal secondary sexual characteristics or by the age of 13 in girls with no secondary sexual characteristics. On the other hand, secondary amenorrhoea is the cessation of menstruation for 3-6 months in women with previously normal and regular menses or 6-12 months in women with previous oligomenorrhoea.
There are various causes of amenorrhoea, including gonadal dysgenesis, testicular feminization, congenital malformations of the genital tract, functional hypothalamic amenorrhoea, congenital adrenal hyperplasia, imperforate hymen, hypothalamic amenorrhoea, polycystic ovarian syndrome, hyperprolactinemia, premature ovarian failure, Sheehan’s syndrome, Asherman’s syndrome, and thyrotoxicosis. To determine the underlying cause of amenorrhoea, initial investigations such as full blood count, urea & electrolytes, coeliac screen, thyroid function tests, gonadotrophins, prolactin, and androgen levels are necessary.
The management of amenorrhoea depends on the underlying cause. For primary amenorrhoea, it is important to investigate and treat any underlying cause. Women with primary ovarian insufficiency due to gonadal dysgenesis may benefit from hormone replacement therapy to prevent osteoporosis. For secondary amenorrhoea, it is important to exclude pregnancy, lactation, and menopause in women 40 years of age or older and treat the underlying cause accordingly. It is important to note that hypothyroidism may also cause amenorrhoea.
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This question is part of the following fields:
- Reproductive Medicine
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Question 17
Incorrect
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A 28-year-old woman visits her GP with concerns about a lump in her breast that she discovered three weeks ago. The lump is causing discomfort when she wears a bra. During the examination, the doctor detects a 4 cm, non-tethered, and firm lump in the upper left quadrant of her right breast. The surface and contour are smooth, the skin is intact, and it does not transilluminate. The doctor refers her for a triple assessment, which confirms that she has a fibroadenoma. What is the next step in her treatment plan?
Your Answer: Discharge and safety netting
Correct Answer: Refer for surgical excision
Explanation:The appropriate action for a patient presenting with a breast fibroadenoma larger than 3 cm is to refer them for surgical excision. Fibroadenomas are benign masses that develop from the whole lobule and are typically small, firm, and smooth, often referred to as breast mice. While they are usually treated conservatively, surgical excision is necessary if they cause discomfort, as in this case. Checking the mass again in three months, discharge and safety netting, prescribing oral antibiotics, and referring for aspiration are all incorrect management options for a fibroadenoma.
Understanding Breast Fibroadenoma
Breast fibroadenoma is a type of breast mass that develops from a whole lobule. It is characterized by a mobile, firm, and smooth lump in the breast, which is often referred to as a breast mouse. Fibroadenoma accounts for about 12% of all breast masses and is more common in women under the age of 30.
Fortunately, fibroadenomas are usually benign and do not increase the risk of developing breast cancer. In fact, over a two-year period, up to 30% of fibroadenomas may even get smaller on their own. However, if the lump is larger than 3 cm, surgical excision is typically recommended.
In summary, breast fibroadenoma is a common type of breast mass that is usually benign and does not increase the risk of breast cancer. While it may cause concern for some women, it is important to remember that most fibroadenomas do not require treatment and may even resolve on their own.
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This question is part of the following fields:
- Haematology/Oncology
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Question 18
Correct
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A 29-year-old woman presents to her GP with complaints of hair loss. She reports noticing that her hair has become significantly thinner and that she is shedding more hair than usual, both on her pillow and in the shower drain. She denies any other symptoms and has no significant medical history except for giving birth to her first child 6 months ago. She is not taking any medications regularly and there is no family history of hair loss. On examination, her scalp hair is uniformly thin, but there are no areas of complete hair loss. Her systemic examination is unremarkable and her vital signs are within normal limits. Blood tests, including iron studies and thyroid function, are all normal. What is the most likely diagnosis?
Your Answer: Telogen effluvium
Explanation:Telogen effluvium is characterized by hair loss and thinning as a result of experiencing significant stress. In this case, the patient’s recent physical stress from giving birth is a likely cause of her hair becoming thinner due to telogen effluvium. The hair loss patterns observed do not match those of alopecia areata or alopecia totalis, which respectively cause distinct areas of complete hair loss or complete loss of all hair on the head and face.
Input:
Alopecia may be divided into scarring (destruction of hair follicle) and non-scarring (preservation of hair follicle). Scarring alopecia can be caused by trauma, burns, radiotherapy, lichen planus, discoid lupus, and untreated tinea capitis. Non-scarring alopecia can be caused by male-pattern baldness, drugs such as cytotoxic drugs, carbimazole, heparin, oral contraceptive pill, and colchicine, nutritional deficiencies such as iron and zinc deficiency, autoimmune conditions such as alopecia areata, telogen effluvium, hair loss following a stressful period such as surgery, and trichotillomania.Output:
– Alopecia can be categorized into scarring and non-scarring types.
– Scarring alopecia is caused by trauma, burns, radiotherapy, lichen planus, discoid lupus, and untreated tinea capitis.
– Non-scarring alopecia is caused by male-pattern baldness, drugs such as cytotoxic drugs, carbimazole, heparin, oral contraceptive pill, and colchicine, nutritional deficiencies such as iron and zinc deficiency, autoimmune conditions such as alopecia areata, telogen effluvium, hair loss following a stressful period such as surgery, and trichotillomania. -
This question is part of the following fields:
- Dermatology
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Question 19
Correct
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A mother brings her 8-year-old daughter into the clinic with worries about her eyes. She believes her daughter's left eye is 'turned outwards'. The child reports no changes in her vision. Upon examination, a left exotropia is observed. The child is instructed to cover her right eye while looking at a fixed point, and the left eye moves inward to maintain focus. What is the best course of action for this patient?
Your Answer: Referral to ophthalmology
Explanation:Children with a squint should be referred to ophthalmology for assessment. Exotropia, or an outwardly turned eye, requires evaluation of the type and severity of the squint by a paediatric eye service. Advising the use of a plaster over the good eye before follow-up is not appropriate as the underlying causes of the squint need to be addressed first, such as a space-occupying lesion or refractive error. Optometrists are not medical doctors and a full assessment by an ophthalmologist is necessary to identify and treat any medical or surgical causes, such as retinoblastoma. Reassurance is not appropriate as squints can worsen and lead to amblyopia, which can be prevented with early treatment. Follow-up in 6 months would also be inappropriate.
Squint, also known as strabismus, is a condition where the visual axes are misaligned. There are two types of squints: concomitant and paralytic. Concomitant squints are more common and are caused by an imbalance in the extraocular muscles. On the other hand, paralytic squints are rare and are caused by the paralysis of extraocular muscles. It is important to detect squints early on as they can lead to amblyopia, where the brain fails to process inputs from one eye and favours the other eye over time.
To detect a squint, a corneal light reflection test can be performed by holding a light source 30cm from the child’s face to see if the light reflects symmetrically on the pupils. The cover test is also used to identify the nature of the squint. This involves asking the child to focus on an object, covering one eye, and observing the movement of the uncovered eye. The test is then repeated with the other eye covered.
If a squint is detected, it is important to refer the child to secondary care. Eye patches may also be used to help prevent amblyopia.
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This question is part of the following fields:
- Ophthalmology
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Question 20
Correct
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A 67-year-old male on the high dependency unit has just undergone a complex hip arthroplasty 12 hours ago. They are now complaining of feeling their heart pounding out of their chest and has become short of breath 30 minutes ago. An electrocardiogram (ECG) showed supraventricular tachycardia (SVT). The patient attempted blowing into a syringe with the guidance of a doctor and this terminated the SVT.
Shortly after, the patient experiences another episode of palpitations and breathlessness, with visible SVT on an ECG. The patient's vital signs include a temperature of 37.2 ºC, oxygen saturations of 98% on air, a heart rate of 180 beats per minute, a respiratory rate of 24 breaths per minute, and a blood pressure of 85/65 mmHg.
What is the immediate and appropriate management for this patient?Your Answer: DC cardioversion
Explanation:If a patient with tachyarrhythmia has a systolic BP below 90 mmHg, immediate DC cardioversion is necessary. This is because hypotension indicates an unstable tachyarrhythmia that can lead to shock, heart failure, syncope, or myocardial ischemia. Vagal maneuvers and adenosine are not recommended in cases of severe hypotension, and amiodarone is used for pharmacological cardioversion in broad complex tachycardia.
Management of Peri-Arrest Tachycardias
The Resuscitation Council (UK) guidelines for the management of peri-arrest tachycardias have been simplified in the 2015 update. The previous separate algorithms for broad-complex tachycardia, narrow complex tachycardia, and atrial fibrillation have been replaced by a unified treatment algorithm. After basic ABC assessment, patients are classified as stable or unstable based on the presence of adverse signs such as hypotension, pallor, sweating, confusion, or impaired consciousness. If any of these signs are present, synchronised DC shocks should be given, up to a maximum of three shocks.
The treatment following this is based on whether the QRS complex is narrow or broad and whether the rhythm is regular or irregular. For broad-complex tachycardia, a loading dose of amiodarone followed by a 24-hour infusion is given if the rhythm is regular. If the rhythm is irregular, expert help should be sought as it could be due to atrial fibrillation with bundle branch block, atrial fibrillation with ventricular pre-excitation, or torsade de pointes.
For narrow-complex tachycardia, vagal manoeuvres followed by IV adenosine are given if the rhythm is regular. If unsuccessful, atrial flutter is considered, and rate control is achieved with beta-blockers. If the rhythm is irregular, it is likely due to atrial fibrillation, and electrical or chemical cardioversion is considered if the onset is less than 48 hours. Beta-blockers are usually the first-line treatment for rate control unless contraindicated. The full treatment algorithm can be found on the Resuscitation Council website.
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This question is part of the following fields:
- Cardiovascular
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Question 21
Correct
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A 28-year-old woman is in week 32 of her pregnancy. She has been experiencing itching for two weeks and is worried. She now has mild jaundice. Her total bilirubin level is elevated at around 85 μmol/l (reference range <20 μmol/), and her alanine aminotransferase (ALT) level is elevated at 78 iu/l (reference range 20–60 iu/l); her alkaline phosphatase (ALP) level is significantly elevated. What is the most appropriate diagnosis for this clinical presentation?
Your Answer: Intrahepatic cholestasis of pregnancy
Explanation:Differential Diagnosis of Liver Disorders in Pregnancy
Intrahepatic cholestasis of pregnancy (ICP), hyperemesis gravidarum, cholecystitis, acute fatty liver of pregnancy (AFLP), and HELLP syndrome are all potential liver disorders that can occur during pregnancy.
ICP is the most common pregnancy-related liver disorder and is characterised by generalised itching, jaundice, and elevated total serum bile acid levels. Maternal outcomes are good, but fetal outcomes can be devastating.
Hyperemesis gravidarum is characterised by persistent nausea and vomiting associated with ketosis and weight loss. Elevated transaminase levels may occur, but significantly elevated liver enzymes would suggest an alternative aetiology.
Cholecystitis is inflammation of the gall bladder that occurs most commonly due to gallstones. The most common presenting symptom is upper abdominal pain, which localises to the right upper quadrant.
AFLP is characterised by microvesicular steatosis in the liver and can present with malaise, nausea and vomiting, right upper quadrant and epigastric pain, and acute renal failure. Both AST and ALT levels can be elevated, and hypoglycaemia is common.
HELLP syndrome is a life-threatening condition that can potentially complicate pregnancy and is characterised by haemolysis, elevated liver enzyme levels, and low platelet levels. Symptoms are non-specific and include malaise, nausea and vomiting, and weight gain. A normal platelet count and no evidence of haemolysis are not consistent with a diagnosis of HELLP syndrome.
Early recognition, treatment, and timely delivery are imperative for all of these liver disorders in pregnancy.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 22
Incorrect
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Which one of the following statements regarding the HPV vaccine is incorrect?
Your Answer: The second dose is given at 3-4 years
Correct Answer: Children who received another live vaccine 2 weeks ago can safely have MMR
Explanation:The MMR Vaccine: Information on Contraindications and Adverse Effects
The Measles, Mumps and Rubella (MMR) vaccine is given to children in the UK twice before they enter primary school. The first dose is administered at 12-15 months, while the second dose is given at 3-4 years old. This vaccine is part of the routine immunisation schedule.
However, there are certain contraindications to the MMR vaccine. Children with severe immunosuppression, allergies to neomycin, or those who have received another live vaccine by injection within four weeks should not receive the MMR vaccine. Pregnant women should also avoid getting vaccinated for at least one month following the MMR vaccine. Additionally, if a child has undergone immunoglobulin therapy within the past three months, there may be no immune response to the measles vaccine if antibodies are present.
While the MMR vaccine is generally safe, there are some adverse effects that may occur. After the first dose of the vaccine, some children may experience malaise, fever, and rash. These symptoms typically occur after 5-10 days and last for around 2-3 days. It is important to be aware of these potential side effects and to consult with a healthcare professional if any concerns arise.
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This question is part of the following fields:
- Paediatrics
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Question 23
Correct
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A 45-year-old woman attends the general practice surgery with her husband who is concerned that since she has started working from home several months ago, she has had a continuous cold. She reports frequent sneezing, clear nasal discharge and a terrible taste in her mouth in the morning. Her eyes look red and feel itchy. She has noticed that the symptoms improve when she is at the office or when they have been on vacation. She has a history of migraines and is otherwise well. She has not yet tried any treatment for her symptoms.
Which of the following is the most likely diagnosis?Your Answer: Allergic rhinitis
Explanation:Understanding Allergic Rhinitis: Symptoms, Causes, and Differential Diagnosis
Allergic rhinitis is a common condition that presents with a range of symptoms, including sneezing, itchiness, rhinorrhea, and a blocked nose. Patients with allergic rhinitis often experience eye symptoms such as bilateral itchiness, redness, and swelling. While the diagnosis of allergic rhinitis is usually based on characteristic features, it is important to exclude infectious and irritant causes.
In this case, the patient’s symptoms and medical history suggest an allergic cause for his condition. It would be prudent to inquire about his new home environment, as the allergen may be animal dander from a pet or house dust mites if there are more soft furnishings and carpets than in his previous home.
Other possible diagnoses, such as acute infective rhinitis, acute sinusitis, rhinitis medicamentosa, and nasopharyngeal carcinoma, can be ruled out based on the patient’s symptoms and medical history. For example, acute infective rhinitis would present more acutely with discolored nasal discharge and other upper respiratory tract infection symptoms. Acute sinusitis would present with facial pain or pressure and discolored nasal discharge. Rhinitis medicamentosa is caused by long-term use of intranasal decongestants, which is not the case for this patient. Nasopharyngeal carcinoma is rare and typically presents with unilateral symptoms and a middle-ear effusion.
Overall, understanding the symptoms, causes, and differential diagnosis of allergic rhinitis is crucial for proper management and treatment of this common condition.
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This question is part of the following fields:
- ENT
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Question 24
Correct
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A 26-year-old woman presents to gastroenterology clinic with severe ulcerative colitis. Before starting azathioprine to improve her symptoms, what potential contraindications should be ruled out?
Your Answer: Thiopurine methyltransferase deficiency (TPMT)
Explanation:Azathioprine is a medication that is broken down into mercaptopurine, which is an active compound that inhibits the production of purine. To determine if someone is at risk for azathioprine toxicity, a test for thiopurine methyltransferase (TPMT) may be necessary. Adverse effects of this medication include bone marrow depression, which can be detected through a full blood count if there are signs of infection or bleeding, as well as nausea, vomiting, pancreatitis, and an increased risk of non-melanoma skin cancer. It is important to note that there is a significant interaction between azathioprine and allopurinol, so lower doses of azathioprine should be used in conjunction with allopurinol. Despite these potential side effects, azathioprine is generally considered safe to use during pregnancy.
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This question is part of the following fields:
- Musculoskeletal
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Question 25
Correct
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A patient in her late 60s is hospitalized with digoxin toxicity. Which of her medications is the most probable cause of this condition?
Your Answer: Diltiazem
Explanation:The use of diltiazem can lead to the development of digoxin toxicity.
Understanding Digoxin and Its Toxicity
Digoxin is a medication used for rate control in atrial fibrillation and for improving symptoms in heart failure patients. It works by decreasing conduction through the atrioventricular node and increasing the force of cardiac muscle contraction. However, it has a narrow therapeutic index and requires monitoring for toxicity.
Toxicity may occur even when the digoxin concentration is within the therapeutic range. Symptoms of toxicity include lethargy, nausea, vomiting, anorexia, confusion, yellow-green vision, arrhythmias, and gynaecomastia. Hypokalaemia is a classic precipitating factor, as it allows digoxin to more easily bind to the ATPase pump and increase its inhibitory effects. Other factors that may contribute to toxicity include increasing age, renal failure, myocardial ischaemia, electrolyte imbalances, hypoalbuminaemia, hypothermia, hypothyroidism, and certain medications such as amiodarone, quinidine, and verapamil.
Management of digoxin toxicity involves the use of Digibind, correction of arrhythmias, and monitoring of potassium levels. It is important to recognize the potential for toxicity and monitor patients accordingly to prevent adverse outcomes.
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This question is part of the following fields:
- Pharmacology/Therapeutics
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Question 26
Correct
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A 67-year-old man complains of lower urinary tract symptoms. He has been experiencing urinary urgency and occasional incontinence for the past few months. He reports no difficulty with urinary flow, hesitancy, or straining. Prostate examination and urinalysis reveal no abnormalities. What medication is most likely to relieve his symptoms?
Your Answer: Antimuscarinic
Explanation:Patients with an overactive bladder can benefit from antimuscarinic drugs. Oxybutynin, tolterodine, and darifenacin are some examples of effective medications. However, before resorting to medication, it is important to discuss conservative measures with the patient and offer bladder training.
Lower urinary tract symptoms (LUTS) are a common issue in men over the age of 50, with benign prostatic hyperplasia being the most common cause. However, other causes such as prostate cancer should also be considered. These symptoms can be classified into three groups: voiding, storage, and post-micturition. To properly manage LUTS, it is important to conduct a urinalysis to check for infection and haematuria, perform a digital rectal examination to assess the size and consistency of the prostate, and possibly conduct a PSA test after proper counselling. Patients should also complete a urinary frequency-volume chart and an International Prostate Symptom Score to guide management.
For predominantly voiding symptoms, conservative measures such as pelvic floor muscle training, bladder training, and prudent fluid intake can be helpful. If symptoms are moderate or severe, an alpha-blocker may be offered. If the prostate is enlarged and the patient is at high risk of progression, a 5-alpha reductase inhibitor should be offered. If there are mixed symptoms of voiding and storage not responding to an alpha-blocker, an antimuscarinic drug may be added. For predominantly overactive bladder symptoms, moderating fluid intake and bladder retraining should be offered, and antimuscarinic drugs may be prescribed if symptoms persist. Mirabegron may be considered if first-line drugs fail. For nocturia, moderating fluid intake at night, furosemide 40mg in the late afternoon, and desmopressin may be helpful.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 27
Correct
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What statement regarding the pharmacology of trimethoprim is correct? Choose only one option from the list.
Your Answer: It can be combined with sulfamethoxazole for synergistic reasons
Explanation:Understanding Trimethoprim: Uses, Synergy, and Potential Side Effects
Trimethoprim is an antimicrobial drug that is commonly used to treat urinary tract infections and prevent Pneumocystis jirovecii pneumonia. It works by inhibiting the reduction of dihydrofolic acid to tetrahydrofolic acid, which is essential for bacterial DNA synthesis. While it is often combined with sulfamethoxazole for synergistic reasons, serum level monitoring is not required for dosage guidance. However, caution should be exercised in individuals with a predisposition to folate deficiency, as trimethoprim can lower folic acid levels and lead to megaloblastic anemia. While hepatic toxicity has not been reported, it is important to be aware of potential side effects when using this medication.
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This question is part of the following fields:
- Pharmacology/Therapeutics
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Question 28
Incorrect
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A 65-year-old woman presents to the emergency department with a 6 cm erythematous skin lesion on her upper arm after experiencing a high fever of 39ºC, headache, and vomiting for the past 48 hours. A skin biopsy revealed a beta-haemolytic group A streptococcal infection in the upper dermis. What is the most appropriate term to describe this condition?
Your Answer: Necrotizing fasciitis
Correct Answer: Erysipelas
Explanation:Erysipelas is mainly caused by Streptococcus pyogenes, which belongs to the beta-haemolytic group A streptococci. The rash is a result of an endotoxin produced by the bacteria, rather than the bacteria itself. The absence of subcutaneous tissue involvement is a distinguishing feature of erysipelas.
Antibiotic Guidelines for Common Infections
Respiratory infections, urinary tract infections, skin infections, ear, nose, and throat infections, genital infections, and gastrointestinal infections are some of the most common infections that require antibiotic treatment. The British National Formulary (BNF) provides guidelines for the appropriate use of antibiotics for these infections.
For respiratory infections such as chronic bronchitis, community-acquired pneumonia, and hospital-acquired pneumonia, antibiotics such as amoxicillin, tetracycline, clarithromycin, co-amoxiclav, cefuroxime, piperacillin with tazobactam, ceftazidime, or ciprofloxacin are recommended depending on the severity and type of infection.
For urinary tract infections, lower urinary tract infections can be treated with trimethoprim or nitrofurantoin, while acute pyelonephritis requires broad-spectrum cephalosporin or quinolone. Acute prostatitis can be treated with quinolone or trimethoprim.
Skin infections such as impetigo, cellulitis, erysipelas, and animal or human bites require antibiotics such as topical hydrogen peroxide, oral flucloxacillin, erythromycin, doxycycline, clarithromycin, or metronidazole depending on the severity and type of infection.
Ear, nose, and throat infections such as throat infections, sinusitis, otitis media, otitis externa, periapical or periodontal abscess, and acute necrotising ulcerative gingivitis require antibiotics such as phenoxymethylpenicillin, amoxicillin, erythromycin, or flucloxacillin depending on the severity and type of infection.
Genital infections such as gonorrhoea, chlamydia, pelvic inflammatory disease, syphilis, and bacterial vaginosis require antibiotics such as intramuscular ceftriaxone, doxycycline, azithromycin, ofloxacin, metronidazole, or benzathine benzylpenicillin depending on the severity and type of infection.
Gastrointestinal infections such as Clostridioides difficile, Campylobacter enteritis, Salmonella (non-typhoid), and Shigellosis require antibiotics such as oral vancomycin, oral fidaxomicin, clarithrom
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This question is part of the following fields:
- Infectious Diseases
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Question 29
Incorrect
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A 65-year-old woman with atrial fibrillation and hypertension is prescribed amiodarone.
Which of the following blood tests is crucial for monitoring amiodarone use?Your Answer: FBC, U&Es, LFTs, TFTs (3-monthly)
Correct Answer: LFTs, TFTs (6-monthly)
Explanation:Drug Monitoring in Primary Care
Drug monitoring is an essential aspect of patient care, particularly for medications with potential side effects. In primary care, drug monitoring is becoming increasingly common, especially for patients managed through shared-care with specialty care.
Amiodarone is a medication that requires ongoing monitoring for potential side effects, including pulmonary toxicity, thyroid dysfunction, abnormal liver function, and corneal microdeposits. Monitoring includes checking LFTs and TFTs every six months, a chest radiograph and ECG every 12 months, and an annual ophthalmological examination.
Azathioprine requires monitoring of FBC and LFTs every three months, while lithium requires monitoring of U&Es, TFTs, and lithium plasma levels every six months. Methotrexate requires monitoring of FBC, U&Es, and LFTs every two to three months.
In conclusion, drug monitoring is crucial in primary care to ensure patient safety and prevent potential adverse effects. Regular monitoring of blood tests can help detect any changes in a patient’s health and allow for timely intervention.
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This question is part of the following fields:
- Pharmacology/Therapeutics
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Question 30
Incorrect
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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: Rivaroxaban - Idarucizumab
Correct 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 31
Incorrect
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A 49-year-old man presents to his GP complaining of difficulty walking. He describes experiencing pain in both calves and feet after walking around 400m, which gradually worsens and eventually causes his legs to give out. The pain disappears completely after sitting and resting for a few minutes, and he has found that leaning forward helps him walk further before the pain returns. The patient has no prior medical history, and a physical examination of his lower limbs reveals no abnormalities. What is the probable diagnosis?
Your Answer: Peripheral vascular disease
Correct Answer: Lumbar spinal stenosis
Explanation:Lumbar spinal canal stenosis is often indicated by a history of progressive painful neurological deficit that improves when resting or leaning forward. This condition causes nerve root ischaemia due to inadequate microvascular blood flow to the spinal nerve roots, resulting in bilateral neuropathic pain and progressive deficit affecting the dermatomes and myotomes below the affected level. Leaning forward widens the canal, providing relief, while resting reduces the oxygen requirement of the nerve roots, allowing the ischaemia to slowly resolve. Neurological examination of the legs usually shows no abnormal findings as the symptoms are only brought on by consistent use of the nerve roots.
Osteoarthritis, on the other hand, is a degenerative arthropathy that typically affects large weight-bearing joints in the lower limbs, causing pain that rarely improves with rest and is not associated with a neurological deficit. It is usually unilateral and does not cause symmetrical symptoms.
Peripheral neuropathy can produce similar symptoms to spinal stenosis, but the pathology is not related to nerve use, and a deficit (usually sensory) would be detected on examination. The absence of such findings indicates that peripheral neuropathy is not the cause.
Peripheral vascular disease is the most likely differential for patients with spinal stenosis and symptoms of progressive leg pain that is relieved by rest. However, evidence of vascular insufficiency, such as absent distal pulses, ulceration or skin changes, would be present on examination if the condition were severe enough to cause symptoms after relatively short distances of walking. Additionally, leaning forward does not improve symptoms in peripheral vascular disease, only rest does.
Lumbar spinal stenosis is a condition where the central canal in the lower back is narrowed due to degenerative changes, such as a tumor or disk prolapse. Patients may experience back pain, neuropathic pain, and symptoms similar to claudication. However, one distinguishing factor is that the pain is positional, with sitting being more comfortable than standing, and walking uphill being easier than downhill. Degenerative disease is the most common cause, starting with changes in the intervertebral disk that lead to disk bulging and collapse. This puts stress on the facet joints, causing cartilage degeneration, hypertrophy, and osteophyte formation, which narrows the spinal canal and compresses the nerve roots of the cauda equina. MRI scanning is the best way to diagnose lumbar spinal stenosis, and treatment may involve a laminectomy.
Overall, lumbar spinal stenosis is a condition that affects the lower back and can cause a range of symptoms, including pain and discomfort. It is often caused by degenerative changes in the intervertebral disk, which can lead to narrowing of the spinal canal and compression of the nerve roots. Diagnosis is typically done through MRI scanning, and treatment may involve a laminectomy. It is important to note that the pain associated with lumbar spinal stenosis is positional, with sitting being more comfortable than standing, and walking uphill being easier than downhill.
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This question is part of the following fields:
- Musculoskeletal
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Question 32
Correct
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A 35-year-old woman arrives at the emergency department worried about potential exposure to chickenpox. Earlier today, she had contact with a child who had a fever, sore throat, and itchy blisters on their face. The patient is currently 20 weeks pregnant and is uncertain if she has ever had chickenpox or received the vaccine.
What is the most appropriate next step in managing this patient?Your Answer: Check maternal blood for varicella zoster antibodies
Explanation:Chickenpox exposure in pregnancy can pose risks to both the mother and fetus, including fetal varicella syndrome. Post-exposure prophylaxis (PEP) with varicella-zoster immunoglobulin (VZIG) or antivirals should be given to non-immune pregnant women, with timing dependent on gestational age. If a pregnant woman develops chickenpox, specialist advice should be sought and oral aciclovir may be given if she is ≥ 20 weeks and presents within 24 hours of onset of the rash.
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This question is part of the following fields:
- Reproductive Medicine
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Question 33
Correct
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A 28-year-old pregnant woman comes to the clinic complaining of severe vomiting. She is currently 10 weeks pregnant and this is her first pregnancy. According to RCOG guidelines, what are the diagnostic criteria for hyperemesis gravidarum?
Your Answer: 5% pre-pregnancy weight loss AND dehydration AND electrolyte imbalance
Explanation:Weight loss before pregnancy
Lack of proper hydration
Disruption in electrolyte balanceHyperemesis gravidarum is an extreme form of nausea and vomiting of pregnancy that occurs in around 1% of pregnancies and is most common between 8 and 12 weeks. It is associated with raised beta hCG levels and can be caused by multiple pregnancies, trophoblastic disease, hyperthyroidism, nulliparity, and obesity. Referral criteria for nausea and vomiting in pregnancy include continued symptoms with ketonuria and/or weight loss, a confirmed or suspected comorbidity, and inability to keep down liquids or oral antiemetics. The diagnosis of hyperemesis gravidarum requires the presence of 5% pre-pregnancy weight loss, dehydration, and electrolyte imbalance. Management includes first-line use of antihistamines and oral cyclizine or promethazine, with second-line options of ondansetron and metoclopramide. Admission may be needed for IV hydration. Complications can include Wernicke’s encephalopathy, Mallory-Weiss tear, central pontine myelinolysis, acute tubular necrosis, and fetal growth issues.
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This question is part of the following fields:
- Reproductive Medicine
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Question 34
Incorrect
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A 42-year-old male complains of difficulty breathing after experiencing flu-like symptoms for a week. He has a dry cough and no chest discomfort. A chest x-ray reveals bilateral consolidation, and he has red rashes on his limbs and torso. Which test is most likely to provide a definitive diagnosis?
Your Answer: Cold agglutins
Correct Answer: Serology for Mycoplasma
Explanation:A diagnosis of Mycoplasma can be made based on symptoms such as flu-like symptoms, bilateral consolidation, and erythema multiforme. The most suitable diagnostic test for this condition is Mycoplasma serology.
Mycoplasma pneumoniae: A Cause of Atypical Pneumonia
Mycoplasma pneumoniae is a type of bacteria that causes atypical pneumonia, which is more common in younger patients. This disease is associated with various complications such as erythema multiforme and cold autoimmune haemolytic anaemia. Epidemics of Mycoplasma pneumoniae typically occur every four years. It is important to recognize atypical pneumonia because it may not respond to penicillins or cephalosporins due to the bacteria lacking a peptidoglycan cell wall.
The disease usually has a gradual onset and is preceded by flu-like symptoms, followed by a dry cough. X-rays may show bilateral consolidation. Complications may include cold agglutinins, erythema multiforme, erythema nodosum, meningoencephalitis, Guillain-Barre syndrome, bullous myringitis, pericarditis/myocarditis, and gastrointestinal and renal problems.
Diagnosis is generally made through Mycoplasma serology and a positive cold agglutination test. Management involves the use of doxycycline or a macrolide such as erythromycin or clarithromycin.
In comparison to Legionella pneumonia, which is caused by a different type of bacteria, Mycoplasma pneumoniae has a more gradual onset and is associated with different complications. It is important to differentiate between the two types of pneumonia to ensure appropriate treatment.
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This question is part of the following fields:
- Infectious Diseases
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Question 35
Incorrect
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Which one of the following statement regarding the 1977 Abortion Act is true?
Your Answer: It requires the opinion of one psychiatrist and one general medical practitioner before an abortion can be performed
Correct Answer: It states that an abortion may be performed if the pregnancy presents a risk to the physical or mental health of any existing children
Explanation:Termination of Pregnancy in the UK
The UK’s current abortion law is based on the 1967 Abortion Act, which was amended in 1990 to reduce the upper limit for termination from 28 weeks to 24 weeks gestation. To perform an abortion, two registered medical practitioners must sign a legal document, except in emergencies where only one is needed. The procedure must be carried out by a registered medical practitioner in an NHS hospital or licensed premise.
The method used to terminate a pregnancy depends on the gestation period. For pregnancies less than nine weeks, mifepristone (an anti-progestogen) is administered, followed by prostaglandins 48 hours later to stimulate uterine contractions. For pregnancies less than 13 weeks, surgical dilation and suction of uterine contents is used. For pregnancies more than 15 weeks, surgical dilation and evacuation of uterine contents or late medical abortion (inducing ‘mini-labour’) is used.
The 1967 Abortion Act outlines the circumstances under which a person shall not be guilty of an offence under the law relating to abortion. These include if two registered medical practitioners are of the opinion, formed in good faith, that the pregnancy has not exceeded its 24th week and that the continuance of the pregnancy would involve risk, greater than if the pregnancy were terminated, of injury to the physical or mental health of the pregnant woman or any existing children of her family. The limits do not apply in cases where it is necessary to save the life of the woman, there is evidence of extreme fetal abnormality, or there is a risk of serious physical or mental injury to the woman.
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This question is part of the following fields:
- Reproductive Medicine
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Question 36
Correct
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As a foundation doctor in the endocrine department, if you were to assess a patient with hypoparathyroidism resulting in hypocalcaemia, what findings may you discover during your investigation?
Your Answer: Chvostek's sign: percussion over the facial nerve
Explanation:Hypocalcaemia: Symptoms and Signs
Hypocalcaemia is a condition characterized by low levels of calcium in the blood. Since calcium is essential for proper muscle and nerve function, many of the symptoms and signs of hypocalcaemia are related to neuromuscular excitability. The most common features of hypocalcaemia include muscle twitching, cramping, and spasms, as well as perioral paraesthesia. In chronic cases, patients may experience depression and cataracts.
An electrocardiogram (ECG) may show a prolonged QT interval, while Trousseau’s sign may be present when the brachial artery is occluded by inflating the blood pressure cuff and maintaining pressure above systolic. This causes wrist flexion and fingers to be drawn together, and is seen in around 95% of patients with hypocalcaemia and around 1% of normocalcaemic people. Chvostek’s sign, which is seen in around 70% of patients with hypocalcaemia and around 10% of normocalcaemic people, involves tapping over the parotid gland to cause facial muscles to twitch.
In summary, hypocalcaemia can cause a range of symptoms and signs related to neuromuscular excitability, including muscle twitching, cramping, and spasms, as well as perioral paraesthesia, depression, and cataracts. Trousseau’s sign and Chvostek’s sign are also commonly observed in patients with hypocalcaemia.
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This question is part of the following fields:
- Endocrinology/Metabolic Disease
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Question 37
Correct
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A 59-year-old woman comes in for a routine check-up with her primary care physician. She has a history of type 2 diabetes mellitus and is currently taking metformin and sitagliptin. During her last visit, her blood pressure was measured at 161/88 mmHg and she was advised to undergo 7 days of ambulatory blood pressure monitoring.
During this visit, her average ambulatory blood pressure is recorded as 158/74 mmHg. All other observations are stable and her cardiorespiratory examination is unremarkable. Her blood sugar level is 6.2 mmol/L.
What medication would be recommended to manage this patient's blood pressure?Your Answer: Lisinopril
Explanation:Regardless of age, ACE inhibitors/A2RBs are the first-line treatment for hypertension in diabetics.
Blood Pressure Management in Diabetes Mellitus
Patients with diabetes mellitus have traditionally been managed with lower blood pressure targets to reduce their overall cardiovascular risk. However, a 2013 Cochrane review found that there was little difference in outcomes between patients who had tight blood pressure control (targets < 130/85 mmHg) and those with more relaxed control (< 140-160/90-100 mmHg), except for a slightly reduced rate of stroke in the former group. As a result, NICE recommends a blood pressure target of < 140/90 mmHg for type 2 diabetics, the same as for patients without diabetes. For patients with type 1 diabetes, NICE recommends a blood pressure target of 135/85 mmHg unless they have albuminuria or two or more features of metabolic syndrome, in which case the target should be 130/80 mmHg. ACE inhibitors or angiotensin-II receptor antagonists (A2RBs) are the first-line antihypertensive regardless of age, as they have a renoprotective effect in diabetes. A2RBs are preferred for black African or African-Caribbean diabetic patients. Further management then follows that of non-diabetic patients. It is important to note that autonomic neuropathy may result in more postural symptoms in patients taking antihypertensive therapy. Therefore, the routine use of beta-blockers in uncomplicated hypertension should be avoided, particularly when given in combination with thiazides, as they may cause insulin resistance, impair insulin secretion, and alter the autonomic response to hypoglycemia.
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This question is part of the following fields:
- Cardiovascular
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Question 38
Correct
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A 25-year-old man presents with a complaint of generalised swelling that has affected his legs, arm and face, worsening over the last three weeks. Upon investigation, the following results were obtained: Sodium (Na+) 139 mmol/l (normal range: 135–145 mmol/l), Potassium (K+) 4.2 mmol/l (normal range: 3.5–5.0 mmol/l), Creatinine (Cr) 190 μmol/l (normal range: 50–120 μmol/l), Urea 14.8 mmol/l (normal range: 7–20 mmol/l), Alanine aminotransferase (ALT) 20 IU/l (normal range: 29–33 IU/l), Bilirubin 16 μmol/l (normal range: < 20.5 μmol/l), Albumin 19 g/l (normal range: 35–50 g/l), Total Cholesterol 9.2 mmol/l (normal range: < 5.2 mmol/l), Prothrombin time (PT) 10 s. What is the most likely diagnosis?
Your Answer: Nephrotic syndrome
Explanation:Differential Diagnosis for a Patient with Generalized Edema, Low Albumin, Renal Impairment, and Elevated Cholesterol
The patient presents with generalized edema, low albumin, renal impairment, and elevated cholesterol. The most likely diagnosis is nephrotic syndrome. Anorexia nervosa is unlikely to cause such a low albumin level. Cirrhosis of the liver is less likely due to normal liver function tests and PT. Cystic fibrosis typically presents with bronchiectasis, pancreatic insufficiency, malabsorption, or diabetes. Nephritic syndrome causes hypertension, haematuria, and oliguria.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 39
Correct
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A 58-year-old woman complains of developing urinary incontinence. She reports no urinary urgency or pain, but experiences leakage of urine when she coughs or laughs. What is the best initial approach to manage this condition?
Your Answer: Pelvic floor muscle training
Explanation:The initial treatment for urinary incontinence differs depending on the type. For urge incontinence, bladder retraining is the recommended first-line approach. On the other hand, for stress incontinence, pelvic floor muscle training is the preferred initial treatment.
Understanding Urinary Incontinence: Causes, Classification, and Management
Urinary incontinence (UI) is a common condition that affects around 4-5% of the population, with elderly females being more susceptible. Several risk factors contribute to UI, including advancing age, previous pregnancy and childbirth, high body mass index, hysterectomy, and family history. UI can be classified into different types, such as overactive bladder (OAB)/urge incontinence, stress incontinence, mixed incontinence, overflow incontinence, and functional incontinence.
Initial investigation of UI involves completing bladder diaries for at least three days, vaginal examination, urine dipstick and culture, and urodynamic studies. Management of UI depends on the predominant type of incontinence. For urge incontinence, bladder retraining and bladder stabilizing drugs such as antimuscarinics are recommended. For stress incontinence, pelvic floor muscle training and surgical procedures such as retropubic mid-urethral tape procedures may be offered. Duloxetine, a combined noradrenaline and serotonin reuptake inhibitor, may also be used as an alternative to surgery.
In summary, understanding the causes, classification, and management of UI is crucial in providing appropriate care for patients. Early diagnosis and intervention can significantly improve the quality of life for those affected by this condition.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 40
Incorrect
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A 42-year-old man was seen by his General Practitioner and diagnosed with community-acquired pneumonia. He has completed a 7-day course of antibiotics but continues to have a fever and productive cough. He is not confused, and his observations are all normal apart from a fever of 39 °C. His chest X-ray has signs of atypical pneumonia. He has no drug allergies.
Which of the following is the most appropriate antibiotic therapy?Your Answer: Cefuroxime
Correct Answer: Clarithromycin
Explanation:Antibiotics for Different Types of Pneumonia
Pneumonia can be caused by various types of bacteria and viruses, and different antibiotics are used to treat them. Atypical pneumonia, caused by organisms such as chlamydia pneumoniae and mycoplasma pneumoniae, does not respond to amoxicillin and requires a 10-14 day course of macrolide antibiotics such as clarithromycin. On the other hand, severe hospital-acquired infections with multidrug-resistant Gram-negative bacteria are treated with aminoglycoside antibiotics like amikacin. Amoxicillin is recommended as first-line treatment for mild community-acquired pneumonia caused by Streptococcus pneumoniae and other bacteria, but it is not effective against atypical pneumonia. Imipenem, a broad-spectrum antibiotic, is used for a range of bacterial infections but not for atypical pneumonia. Cefuroxime, a second-generation cephalosporin antibiotic, is effective against certain bacteria but not indicated for atypical pneumonia. Knowing which antibiotics to use for different types of pneumonia is crucial for effective treatment.
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This question is part of the following fields:
- Infectious Diseases
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Question 41
Incorrect
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A 55-year-old man is hospitalized for a chest infection and undergoes a standard blood test in the emergency room. The results show his HbA1c level as follows:
HbA1c 48 mmol/mol (27-48 mmol/mol)
What medical condition could cause this reading to inaccurately reflect his blood sugar levels?Your Answer: Sickle-cell anaemia
Correct Answer: Splenectomy
Explanation:If a person has undergone a splenectomy, their HbA1c level may be falsely elevated due to the longer lifespan of their red blood cells. HbA1c testing is commonly used to determine diabetes, as it provides an average blood glucose level over a three-month period, which is the lifespan of a typical red blood cell. A higher HbA1c reading can be caused by either a higher average blood glucose concentration or a longer red cell lifespan. Therefore, only a splenectomy would result in an overestimation of blood sugar levels, as it increases the lifespan of red blood cells, while all other conditions would decrease their lifespan and lower the HbA1c reading.
Understanding Glycosylated Haemoglobin (HbA1c) in Diabetes Mellitus
Glycosylated haemoglobin (HbA1c) is a commonly used measure of long-term blood sugar control in diabetes mellitus. It is produced when glucose attaches to haemoglobin in the blood at a rate proportional to the glucose concentration. The level of HbA1c is influenced by the lifespan of red blood cells and the average blood glucose concentration. However, certain conditions such as sickle-cell anaemia, GP6D deficiency, and haemodialysis can interfere with accurate interpretation of HbA1c levels.
HbA1c is believed to reflect the blood glucose levels over the past 2-4 weeks, although it is generally thought to represent the previous 3 months. It is recommended that HbA1c be checked every 3-6 months until stable, then every 6 months. The Diabetes Control and Complications Trial (DCCT) has studied the complex relationship between HbA1c and average blood glucose. The International Federation of Clinical Chemistry (IFCC) has developed a new standardised method for reporting HbA1c in mmol per mol of haemoglobin without glucose attached.
Understanding HbA1c is crucial in managing diabetes mellitus and achieving optimal blood sugar control.
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This question is part of the following fields:
- Endocrinology/Metabolic Disease
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Question 42
Correct
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Which one of the following statements regarding juvenile idiopathic arthritis is accurate?
Your Answer: Achilles tendonitis is a recognised association
Explanation:Ankylosing spondylitis is a type of spondyloarthropathy that is associated with HLA-B27. It is more commonly seen in young males, with a sex ratio of 3:1, and typically presents with lower back pain and stiffness that develops gradually. The stiffness is usually worse in the morning and improves with exercise, while pain at night may improve upon getting up. Clinical examination may reveal reduced lateral and forward flexion, as well as reduced chest expansion. Other features associated with ankylosing spondylitis include apical fibrosis, anterior uveitis, aortic regurgitation, Achilles tendonitis, AV node block, amyloidosis, cauda equina syndrome, and peripheral arthritis (more common in females).
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This question is part of the following fields:
- Musculoskeletal
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Question 43
Incorrect
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A 30-year-old medical student noticed that he had a murmur when he tested his new stethoscope. On assessment in the Cardiology Clinic, he was found to have a harsh systolic murmur over his precordium, which did not change with inspiration. His electrocardiogram (ECG) showed features of biventricular hypertrophy.
Which of the following is the most likely diagnosis?Your Answer: Hypertrophic cardiomyopathy (HCM)
Correct Answer: Ventricular septal defect (VSD)
Explanation:Common Heart Murmurs and their Characteristics
Heart murmurs are abnormal sounds heard during a heartbeat and can indicate underlying heart conditions. Here are some common heart murmurs and their characteristics:
1. Ventricular Septal Defect (VSD): This has a pansystolic murmur, heard loudest at the lower left sternal edge and causing biventricular hypertrophy due to increased strain on both the right and left ventricles.
2. Mitral Regurgitation: This has a pansystolic murmur which is heard loudest at the apex and radiates to the axilla; it is louder on expiration. The ECG can show left ventricular and left atrial enlargement.
3. Aortic Stenosis: This causes a crescendo-decrescendo murmur, heard loudest in the aortic area and radiating to the carotids. It (and all other left-sided murmurs) is louder on expiration.
4. Hypertrophic Cardiomyopathy (HCM): HCM has an early peaking systolic murmur which is worse on Valsalva and reduced on squatting. It is also associated with a jerky pulse. The ECG would show left ventricular hypertrophy.
5. Tricuspid Regurgitation: This has a pansystolic murmur and a brief rumbling diastolic murmur; these are louder on inspiration. The ECG may show right ventricular enlargement.
It is important to note that right-sided murmurs increase with inspiration (e.g. tricuspid regurgitation or TR), whereas left-sided murmurs show no change. The clue to diagnosis is in the ECG finding. Aortic stenosis and mitral regurgitation produce left ventricular hypertrophy; TR produces right ventricular hypertrophy and a VSD produces biventricular hypertrophy.
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This question is part of the following fields:
- Cardiovascular
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Question 44
Correct
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A 26-year-old female patient arrives with a sudden onset of pain at the back of her ankle while jogging, accompanied by a cracking sound. Which medication from the following list could have played a role in causing this injury?
Your Answer: Ciprofloxacin
Explanation:The patient is displaying typical symptoms of a ruptured Achilles tendon, which can be caused by ciprofloxacin. Tendon damage is a known potential side effect of quinolone antibiotics, and it seems to be a rare reaction that can occur after just 8 days of treatment.
Understanding Quinolones: Antibiotics that Inhibit DNA Synthesis
Quinolones are a type of antibiotics that are known for their bactericidal properties. They work by inhibiting DNA synthesis, which makes them effective in treating bacterial infections. Some examples of quinolones include ciprofloxacin and levofloxacin.
The mechanism of action of quinolones involves inhibiting topoisomerase II (DNA gyrase) and topoisomerase IV. However, bacteria can develop resistance to quinolones through mutations to DNA gyrase or by using efflux pumps that reduce the concentration of quinolones inside the cell.
While quinolones are generally safe, they can have adverse effects. For instance, they can lower the seizure threshold in patients with epilepsy and cause tendon damage, including rupture, especially in patients taking steroids. Additionally, animal models have shown that quinolones can damage cartilage, which is why they are generally avoided in children. Quinolones can also lengthen the QT interval, which can be dangerous for patients with heart conditions.
Quinolones should be avoided in pregnant or breastfeeding women and in patients with glucose-6-phosphate dehydrogenase (G6PD) deficiency. Overall, understanding the mechanism of action, mechanism of resistance, adverse effects, and contraindications of quinolones is important for their safe and effective use in treating bacterial infections.
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This question is part of the following fields:
- Pharmacology/Therapeutics
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Question 45
Correct
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A 28-year-old woman presents to you for a discussion on contraception options. She is hesitant about getting an implant or coil and prefers to start taking the combined oral contraceptive pill. However, she is uncertain if she is eligible for the pill due to a family history of breast cancer in her mother and grandmother, both of whom were diagnosed in their 50s. She has undergone genetic testing privately and tested negative for the BRCA1 and BRCA2 gene. She has no significant medical history, is normotensive, and has a BMI of 22 kg/m². What method of contraception would you recommend?
Your Answer: Combined oral contraceptive pill
Explanation:Prescribing the combined oral contraceptive pill is not recommended for women with a family history of breast cancer associated with a BRCA mutation. However, for those with a family history of breast cancer but no BRCA mutation, the contraceptive pill is considered safe and has no restrictions (UKMEC 1). Therefore, if a patient with this medical history requests the combined oral contraceptive pill, it should be prescribed to her as the preferred contraceptive method.
The decision to prescribe the combined oral contraceptive pill is now based on the UK Medical Eligibility Criteria (UKMEC), which categorizes potential contraindications and cautions on a four-point scale. UKMEC 1 indicates no restrictions for use, while UKMEC 2 suggests that the benefits outweigh the risks. UKMEC 3 indicates that the disadvantages may outweigh the advantages, and UKMEC 4 represents an unacceptable health risk. Examples of UKMEC 3 conditions include controlled hypertension, a family history of thromboembolic disease in first-degree relatives under 45 years old, and current gallbladder disease. Examples of UKMEC 4 conditions include a history of thromboembolic disease or thrombogenic mutation, breast cancer, and uncontrolled hypertension. Diabetes mellitus diagnosed over 20 years ago is classified as UKMEC 3 or 4 depending on severity. In 2016, breast feeding between 6 weeks and 6 months postpartum was changed from UKMEC 3 to UKMEC 2.
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This question is part of the following fields:
- Reproductive Medicine
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Question 46
Correct
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A 56-year-old man with hypertension presents to the clinic with a complaint of ankle swelling that has developed over the past two months. Which medication is the most probable cause of this symptom?
Your Answer: Amlodipine
Explanation:Calcium channel blockers may cause adverse effects such as headaches, flushing, and swelling in the ankles.
Understanding Calcium Channel Blockers
Calcium channel blockers are medications primarily used to manage cardiovascular diseases. These blockers target voltage-gated calcium channels present in myocardial cells, cells of the conduction system, and vascular smooth muscle cells. The different types of calcium channel blockers have varying effects on these three areas, making it crucial to differentiate their uses and actions.
Verapamil is an example of a calcium channel blocker used to manage angina, hypertension, and arrhythmias. However, it is highly negatively inotropic and should not be given with beta-blockers as it may cause heart block. Verapamil may also cause side effects such as heart failure, constipation, hypotension, bradycardia, and flushing.
Diltiazem is another calcium channel blocker used to manage angina and hypertension. It is less negatively inotropic than verapamil, but caution should still be exercised when patients have heart failure or are taking beta-blockers. Diltiazem may cause side effects such as hypotension, bradycardia, heart failure, and ankle swelling.
On the other hand, dihydropyridines such as nifedipine, amlodipine, and felodipine are calcium channel blockers used to manage hypertension, angina, and Raynaud’s. These blockers affect the peripheral vascular smooth muscle more than the myocardium, resulting in no worsening of heart failure but may cause ankle swelling. Shorter-acting dihydropyridines such as nifedipine may cause peripheral vasodilation, resulting in reflex tachycardia and side effects such as flushing, headache, and ankle swelling.
In summary, understanding the different types of calcium channel blockers and their effects on the body is crucial in managing cardiovascular diseases. It is also important to note the potential side effects and cautions when prescribing these medications.
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This question is part of the following fields:
- Pharmacology/Therapeutics
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Question 47
Correct
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A mother brings her 10-month-old child to surgery, worried that he is not meeting developmental milestones compared to her friends' children. Upon observation, the child is able to sit without support but shows minimal interest in exploring his surroundings. He has a basic pincer grip, seems hesitant to engage with others, and only says mama. How would you describe his developmental progress?
Your Answer: Normal development
Explanation:Common Developmental Problems and Possible Causes
Developmental problems can manifest in various ways, including referral points such as not smiling at 10 weeks, inability to sit unsupported at 12 months, and failure to walk at 18 months. Fine motor skill problems may also arise, such as abnormal hand preference before 12 months, which could indicate cerebral palsy. Gross motor problems are often caused by a variant of normal, cerebral palsy, or neuromuscular disorders like Duchenne muscular dystrophy. Speech and language problems should always be checked for hearing issues, as they can also be caused by environmental deprivation or general development delay.
It is important to recognize these developmental problems early on and seek appropriate interventions to address them. By doing so, children can receive the necessary support to reach their full potential and overcome any challenges they may face. With proper care and attention, many children with developmental problems can go on to lead happy and fulfilling lives.
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This question is part of the following fields:
- Paediatrics
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Question 48
Incorrect
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A new father is curious as to when his toddler will be receiving her vaccines. He is particularly interested in the six-in-one vaccine which he has heard about from some friends at playgroup. When is the six-in-one vaccine given to toddlers?
Your Answer: 12, 24 and 36 weeks
Correct Answer: 8, 12, and 16 weeks
Explanation:Childhood Vaccination Schedule in the UK
In the UK, childhood vaccinations are an important part of ensuring the health and wellbeing of children. Here is a breakdown of the vaccination schedule:
8, 12, and 16 weeks: The 6-in-1 vaccine is given as a single injection to protect against diphtheria, hepatitis B, Haemophilus influenza B, polio, tetanus, and pertussis. This vaccine is given at eight, 12, and 16 weeks old.
One year: At one year, children receive the MMR vaccine, Hib/Men C vaccine, and third dose of the meningitis B and pneumococcal vaccines.
8, 12, and 16 months: There are three doses given, however at eight, 12, and 16 weeks of age, not months.
24 months: From 2-9 years old, children will receive the annual flu vaccine via nasal spray.
It is important to follow the vaccination schedule to ensure that children are protected against serious illnesses. Talk to your healthcare provider for more information.
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This question is part of the following fields:
- Immunology/Allergy
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Question 49
Correct
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An 80-year-old man with a history of hypertension and ischaemic heart disease comes in for a check-up. He had a heart attack two decades ago but has been symptom-free since. His current medications include bisoprolol, ramipril, atorvastatin, and clopidogrel. He has been experiencing dizziness lately, and an ECG reveals that he has atrial fibrillation. What is the appropriate antithrombotic medication for him now?
Your Answer: Switch to an oral anticoagulant
Explanation:Patients who have AF and stable CVD are typically prescribed anticoagulants while antiplatelets are discontinued. This is because such patients are at risk of stroke, as indicated by their CHADS-VASC score, which takes into account factors such as age, hypertension, and cardiovascular disease. Therefore, the patient in question needs to be treated accordingly. In this case, the patient should discontinue their antiplatelet medication and switch to oral anticoagulant monotherapy.
Managing Combination Antiplatelet and Anticoagulant Therapy
With the rise of comorbidity, it is becoming increasingly common for patients to require both antiplatelet and anticoagulant therapy. However, this combination increases the risk of bleeding and may not be necessary in all cases. While there are no guidelines to cover every scenario, a recent review in the BMJ offers expert opinion on how to manage this situation.
For patients with stable cardiovascular disease who require an anticoagulant, it is recommended that they receive antiplatelet therapy as well. However, if the patient has an indication for an anticoagulant, such as atrial fibrillation, it is best to prescribe anticoagulant monotherapy without the addition of antiplatelets.
In patients who have experienced an acute coronary syndrome or undergone percutaneous coronary intervention, there is a stronger indication for antiplatelet therapy. Typically, patients are given triple therapy (two antiplatelets and one anticoagulant) for four to six months after the event, followed by dual therapy (one antiplatelet and one anticoagulant) for the remaining 12 months. However, the stroke risk in atrial fibrillation varies according to risk factors, so there may be variation in treatment from patient to patient.
For patients who develop venous thromboembolism while on antiplatelets, they will likely be prescribed anticoagulants for three to six months. An ORBIT score should be calculated to determine the risk of bleeding. Patients with a low risk of bleeding may continue taking antiplatelets, while those with an intermediate or high risk of bleeding should consider stopping them.
Overall, managing combination antiplatelet and anticoagulant therapy requires careful consideration of the patient’s individual circumstances and risk factors.
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This question is part of the following fields:
- Cardiovascular
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Question 50
Incorrect
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A 32-year-old male presents with vomiting and central abdominal pain that radiates to the back. The following laboratory result is obtained:
Amylase 1,245 u/dl. Which medication is the most probable cause of these symptoms?Your Answer: Phenytoin
Correct Answer: Sodium valproate
Explanation:Acute pancreatitis is a condition that is mainly caused by gallstones and alcohol in the UK. A popular mnemonic to remember the causes is GET SMASHED, which stands for gallstones, ethanol, trauma, steroids, mumps, autoimmune diseases, scorpion venom, hypertriglyceridaemia, hyperchylomicronaemia, hypercalcaemia, hypothermia, ERCP, and certain drugs. CT scans of patients with acute pancreatitis show diffuse parenchymal enlargement with oedema and indistinct margins. It is important to note that pancreatitis is seven times more common in patients taking mesalazine than sulfasalazine.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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