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Question 1
Correct
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A 25-year-old man with difficult to control epilepsy is being evaluated by a surgeon, four months after switching his antiepileptic medication. Despite being seizure-free, he has gained 5 kg in weight since his last check-up. Which antiepileptic drug is commonly linked to weight gain?
Your Answer: Sodium valproate
Explanation:Weight gain can be a side effect of taking sodium valproate.
Sodium Valproate: Uses and Adverse Effects
Sodium valproate is a medication commonly used to manage epilepsy, particularly for generalised seizures. Its mechanism of action involves increasing the activity of GABA in the brain. However, the use of sodium valproate during pregnancy is strongly discouraged due to its teratogenic effects, which can lead to neural tube defects and neurodevelopmental delays in children. Women of childbearing age should only use this medication if it is absolutely necessary and under the guidance of a specialist neurological or psychiatric advisor.
Aside from its teratogenic effects, sodium valproate can also inhibit P450 enzymes, leading to gastrointestinal issues such as nausea, increased appetite, and weight gain. Other adverse effects include alopecia, ataxia, tremors, hepatotoxicity, pancreatitis, thrombocytopenia, hyponatremia, and hyperammonemic encephalopathy. In cases where hyperammonemic encephalopathy develops, L-carnitine may be used as a treatment option.
Overall, while sodium valproate can be an effective medication for managing epilepsy, its use should be carefully considered and monitored due to its potential adverse effects, particularly during pregnancy.
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This question is part of the following fields:
- Neurology
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Question 2
Incorrect
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A 12-year-old boy is suspected of suffering from insulin-dependent diabetes. He undergoes a glucose tolerance test following an overnight fast.
Which of the following results would most likely confirm the diagnosis?Your Answer: An ‘overshoot’ in the decline of plasma glucose at 3.5 hours
Correct Answer: A peak of plasma glucose occurring between 1 and 2 hours that stays high
Explanation:Interpreting Glucose Tolerance Test Results in Insulin-Dependent Diabetes
Glucose tolerance tests are commonly used to diagnose and monitor diabetes. In insulin-dependent diabetes, the results of these tests can provide valuable information about the patient’s glucose metabolism. Here are some key points to consider when interpreting glucose tolerance test results in insulin-dependent diabetes:
– A peak of plasma glucose occurring between 1 and 2 hours that stays high: In insulin-dependent diabetes, the plasma glucose remains elevated throughout the 4 hours of the test. This is in contrast to normal individuals, who typically have a sharper and earlier peak that returns to basal levels.
– An ‘overshoot’ in the decline of plasma glucose at 3.5 hours: This phenomenon is seen in normal individuals but not in insulin-dependent diabetics.
– A plasma glucose level of 4 mmol/l at zero time: This is unlikely in diabetic patients, who typically have high basal glucose levels.
– A glucose concentration of 5.2 mmol/l at 4 hours: In insulin-dependent diabetes, the plasma glucose remains elevated throughout the 4 hours of the test.
– A low haemoglobin A1c (HbA1c): If the patient has been suffering from diabetes for some time without treatment, the HbA1c would likely be elevated rather than low.Overall, glucose tolerance tests can provide valuable insights into the glucose metabolism of insulin-dependent diabetics. By understanding the nuances of these test results, healthcare providers can better diagnose and manage this chronic condition.
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This question is part of the following fields:
- Endocrinology/Metabolic Disease
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Question 3
Correct
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A 65-year-old woman presents to the emergency department with central abdominal pain. She has vomited twice since the onset of the pain and has not passed any wind or faeces in the last twelve hours. Her medical history includes a partial small bowel resection due to traumatic perforation. On examination, her abdomen appears distended and there is generalised tenderness on palpation. Her blood tests reveal a Hb level of 153 g/L (115 - 160), platelets of 312 * 109/L (150 - 400), WBC count of 10.8 * 109/L (4.0 - 11.0), bilirubin of 17 µmol/L (3 - 17), ALP of 78 u/L (30 - 100), ALT of 29 u/L (3 - 40), and amylase of 880 U/L (70 - 300). What is the most likely diagnosis?
Your Answer: Small bowel obstruction
Explanation:Elevated serum amylase levels are not always indicative of acute pancreatitis, as they can also be seen in cases of small bowel obstruction. In this scenario, the patient is experiencing abdominal pain, vomiting, and a lack of bowel movements or gas, which are all typical symptoms of small bowel obstruction. The fact that the patient has a history of abdominal surgery further supports this diagnosis, despite the misleading blood test results. Acute cholecystitis, on the other hand, presents with different symptoms such as fever, right upper quadrant pain, and systemic distress, and does not typically cause elevated amylase levels. Acute pancreatitis may also be considered as a differential diagnosis, but it is not associated with a lack of bowel movements or gas, and previous bowel surgery is not a risk factor. Ascending cholangitis and large bowel obstruction can also be ruled out based on the patient’s symptoms and test results.
Small bowel obstruction occurs when the small intestines are blocked, preventing the passage of food, fluids, and gas. The most common cause of this condition is adhesions, which can develop after previous surgeries, followed by hernias. Symptoms of small bowel obstruction include diffuse, central abdominal pain, nausea and vomiting (often bilious), constipation, and abdominal distension. Tinkling bowel sounds may also be present in early stages of obstruction. Abdominal x-ray is typically the first-line imaging for suspected small bowel obstruction, showing distended small bowel loops with fluid levels. CT is more sensitive and considered the definitive investigation, particularly in early obstruction. Management involves initial steps such as NBM, IV fluids, and nasogastric tube with free drainage. Some patients may respond to conservative management, but others may require surgery.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 4
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 5
Incorrect
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A 55-year-old woman visits the clinic with a complaint of experiencing night sweats and hot flashes for the past year. She had her last menstrual period 20 months ago. The patient is currently undergoing treatment with tamoxifen for breast cancer. She reports no other symptoms but would like to receive medication to alleviate her hot flashes. What is the most suitable prescription for her?
Your Answer: Combined oral contraceptive pill
Correct Answer: Venlafaxine
Explanation:For patients with active hormone-responsive breast cancer, hormonal methods like HRT and tibolone are not recommended. Instead, non-hormonal methods like selective serotonin reuptake inhibitors and venlafaxine may be used to alleviate vasomotor symptoms of menopause. Topical estrogen can also be used to alleviate symptoms of vaginal atrophy, but it does not help with vasomotor symptoms. COCP is not a suitable treatment for menopausal symptoms.
Managing Menopause: Lifestyle Modifications, Hormone Replacement Therapy, and Non-Hormone Replacement Therapy
Menopause is a natural biological process that marks the end of a woman’s reproductive years. It is diagnosed when a woman has not had a period for 12 consecutive months. Menopausal symptoms are common and can last for up to 7 years, with varying degrees of severity and duration. The management of menopause can be divided into three categories: lifestyle modifications, hormone replacement therapy (HRT), and non-hormone replacement therapy.
Lifestyle modifications can help manage menopausal symptoms such as hot flushes, sleep disturbance, mood changes, and cognitive symptoms. Regular exercise, weight loss, stress reduction, and good sleep hygiene are recommended. For women who cannot or do not want to take HRT, non-hormonal treatments such as fluoxetine, citalopram, or venlafaxine for vasomotor symptoms, vaginal lubricants or moisturizers for vaginal dryness, and cognitive behavior therapy or antidepressants for psychological symptoms can be prescribed.
HRT is a treatment option for women with moderate to severe menopausal symptoms. However, it is contraindicated in women with current or past breast cancer, any estrogen-sensitive cancer, undiagnosed vaginal bleeding, or untreated endometrial hyperplasia. HRT brings certain risks, including venous thromboembolism, stroke, coronary heart disease, breast cancer, and ovarian cancer. Women should be advised of these risks and the fact that symptoms typically last for 2-5 years.
When stopping HRT, it is important to gradually reduce the dosage to limit recurrence of symptoms in the short term. However, in the long term, there is no difference in symptom control. Women who experience ineffective treatment, ongoing side effects, or unexplained bleeding should be referred to secondary care. Overall, managing menopause requires a personalized approach that takes into account a woman’s medical history, preferences, and individual symptoms.
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This question is part of the following fields:
- Reproductive Medicine
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Question 6
Incorrect
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A 43-year-old patient presents to the emergency department with complaints of feeling generally unwell. He reports experiencing body aches and waking up in a cold sweat at night. Upon examination, you observe injection marks on the antecubital fossa. His vital signs reveal a temperature of 38.1ºC, heart rate of 122 bpm, blood pressure of 110/90 mmHg, respiratory rate of 18/min, and oxygen saturation of 98%. You urgently order blood cultures and an echocardiogram. Based on the diagnosis, which site is most likely affected?
Your Answer: Mitral valve
Correct Answer: Tricuspid valve
Explanation:The tricuspid valve is the valve most commonly affected by infective endocarditis in intravenous drug users.
Aetiology of Infective Endocarditis
Infective endocarditis is a condition that affects patients with previously normal valves, rheumatic valve disease, prosthetic valves, congenital heart defects, intravenous drug users, and those who have recently undergone piercings. The strongest risk factor for developing infective endocarditis is a previous episode of the condition. The mitral valve is the most commonly affected valve.
The most common cause of infective endocarditis is Staphylococcus aureus, particularly in acute presentations and intravenous drug users. Historically, Streptococcus viridans was the most common cause, but this is no longer the case except in developing countries. Streptococcus mitis and Streptococcus sanguinis are the two most notable viridans streptococci, commonly found in the mouth and dental plaque. Coagulase-negative Staphylococci such as Staphylococcus epidermidis are the most common cause of endocarditis in patients following prosthetic valve surgery.
Streptococcus bovis is associated with colorectal cancer, with the subtype Streptococcus gallolyticus being most linked to the condition. Non-infective causes of endocarditis include systemic lupus erythematosus and malignancy. Culture negative causes may be due to prior antibiotic therapy or infections caused by Coxiella burnetii, Bartonella, Brucella, or HACEK organisms (Haemophilus, Actinobacillus, Cardiobacterium, Eikenella, Kingella).
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This question is part of the following fields:
- Infectious Diseases
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Question 7
Correct
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A 65-year-old man is referred by his general practitioner for advice regarding optimisation of secondary prevention. He has a history of non-ST-elevation myocardial infarction (NSTEMI) two years ago. He is on a combination of clopidogrel, atenolol 50 mg once daily and atorvastatin 80 mg once daily. He also has diabetes for which he takes metformin 1 g twice daily. His pulse rate is 70 bpm, and blood pressure 144/86 mmHg. His past medical history includes an ischaemic stroke two years ago, from which he made a complete recovery.
What additional therapy would you consider?
Select the SINGLE most appropriate option from the list below. Select ONE option only.Your Answer: Perindopril
Explanation:The Importance of ACE Inhibitors in Post-MI Patients with Vascular Disease and Diabetes
Following a myocardial infarction (MI), the National Institute for Health and Care Excellence (NICE) recommends the use of angiotensin-converting enzyme (ACE) inhibitors for all patients, regardless of left ventricular function. This is based on evidence from trials such as PROGRESS and HOPE, which demonstrate the benefits of ACE inhibitors in patients with vascular disease. Additionally, for patients with diabetes, the use of ACE inhibitors is preferable. The benefits of ACE inhibition are not solely related to blood pressure reduction, but also include favorable local vascular and myocardial effects. Calcium channel blockers, such as amlodipine and diltiazem, are not recommended for post-MI patients with systolic dysfunction. Nicorandil should also be avoided. Clopidogrel is the preferred antiplatelet for patients with clinical vascular disease who have had an MI and a stroke. Blood pressure should be optimized in post-MI patients, and further antihypertensive therapy may be necessary, including the addition of an ACE inhibitor to achieve the desired level.
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This question is part of the following fields:
- Cardiovascular
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Question 8
Correct
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As you review the blood results of a 65-year-old man who has been diagnosed with hypertension, you notice that a HbA1c level was requested as part of the routine work-up. What HbA1c range would be indicative of prediabetes?
Your Answer: 42-47 mmol/mol (6.0-6.4%)
Explanation:Understanding Prediabetes and Impaired Glucose Regulation
Prediabetes is a term used to describe impaired glucose levels that are higher than normal but not yet high enough to be diagnosed as diabetes mellitus. This includes individuals with impaired fasting glucose (IFG) or impaired glucose tolerance (IGT). Diabetes UK estimates that around 1 in 7 adults in the UK have prediabetes, and many of them will eventually develop type 2 diabetes mellitus (T2DM), putting them at risk of microvascular and macrovascular complications.
To identify patients with prediabetes, NICE recommends using a validated computer-based risk assessment tool for adults aged 40 and over, people of South Asian and Chinese descent aged 25-39, and adults with conditions that increase the risk of T2DM. Patients identified as high risk should have a blood sample taken, and a fasting plasma glucose of 6.1-6.9 mmol/l or an HbA1c level of 42-47 mmol/mol (6.0-6.4%) indicates high risk.
Lifestyle modifications such as weight loss, increased exercise, and changes in diet are recommended for managing prediabetes. NICE also recommends metformin for adults at high risk who are still progressing towards T2DM despite lifestyle changes.
There are two main types of impaired glucose regulation: impaired fasting glucose (IFG) and impaired glucose tolerance (IGT). IFG is due to hepatic insulin resistance, while IGT is due to muscle insulin resistance. Patients with IGT are more likely to develop T2DM and cardiovascular disease than those with IFG.
To rule out a diagnosis of diabetes, people with IFG should be offered an oral glucose tolerance test. A result below 11.1 mmol/l but above 7.8 mmol/l indicates that the person doesn’t have diabetes but does have IGT. It is important to understand prediabetes and impaired glucose regulation to prevent the progression to T2DM and its associated complications.
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This question is part of the following fields:
- Endocrinology/Metabolic Disease
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Question 9
Correct
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A 32-year-old man is referred to the department of gastroenterology for a further opinion having developed constant periumbilical pain radiating to both arms. Over the past three years he has been seen by colleagues in neurology, cardiology, rheumatology and endocrinology with a variety of symptoms, including fatigue, neck pain, chest pain and joint pain. Despite intensive investigations, no cause for his symptoms has been identified.
Which of the following is the most likely diagnosis?
Your Answer: Somatisation disorder
Explanation:Understanding Somatoform Disorders: Exploring Possible Diagnoses for a Patient with Medically Unexplained Symptoms
This patient presents with medically unexplained symptoms (MUS), which are collectively known as somatoform disorders. The chronicity and large number of diverse symptoms in this case suggest somatisation disorder, a condition that affects 5-10% of repeat attenders in specialist clinics. Somatisation disorder is more common in women than in men and tends to start in early adulthood. Treatment involves psychological interventions (e.g. CBT) and/or antidepressant medication, but patients are frequently reluctant to engage in these.
Other possible diagnoses for MUS include conversion disorder, hypochondriasis, and undifferentiated somatoform disorder. Conversion disorder presents with neurological symptoms, usually some type of loss of function, while hypochondriasis is associated with a persistent preoccupation to have one or more serious and progressive physical illnesses. In hypochondriasis, the patient puts emphasis on the presence of one (or more) determinate illness and on having it diagnosed. In somatisation disorder, such as in this vignette, the emphasis is on the symptoms (for which the patients seeks a medical explanation), rather than on a specific diagnosis. Undifferentiated somatoform disorder is used when the MUS are multiple and persistent, but the diagnostic criteria for somatisation disorder cannot be fulfilled.
Depression is an important co-morbidity in patients with somatoform disorders, but in this vignette, the combination of physical symptoms and the extensive and complex history of contact with primary and secondary services makes somatisation disorder the most likely diagnosis. It is particularly important to use a patient-centred, empathic interview style with patients with somatoform disorders to ensure they receive the appropriate care and support.
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This question is part of the following fields:
- Psychiatry
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Question 10
Incorrect
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A 30-year-old male arrives at the emergency department following a brawl at a local bar. He appears to be heavily intoxicated and is loudly claiming that he was bitten on the hand while attempting to throw a punch. Upon examination, there is evidence of a bite mark on his right hand that has broken the skin but has not caused any bleeding. The wound site shows no signs of redness, swelling, necrotic tissue, or discharge. Despite being disruptive and agitated, the man is otherwise stable and does not have a fever. What is the most appropriate course of action for managing his condition?
Your Answer: Flucloxacillin
Correct Answer: Co-amoxiclav
Explanation:Co-amoxiclav is the appropriate antibiotic for treating human bites, as well as animal bites. If a human bite breaks the skin and draws blood, antibiotics should be administered. In the scenario provided, the man was bitten in a high-risk area, which includes the hands, feet, face, genitals, skin overlying cartilaginous structures, or an area of poor circulation. Even if the bite did not draw blood, antibiotics should still be considered if the person is at high risk or if the bite is in a high-risk area. Co-amoxiclav is the first choice antibiotic for prophylaxis and treatment of human and animal bites. If the patient has a penicillin allergy or if co-amoxiclav is not suitable, doxycycline with metronidazole is the preferred alternative. Flucloxacillin is not effective in treating human and animal bites. If there is discharge present from the wound site, a swab should be taken for microbiological sampling, and antibiotic choice can be adjusted based on the results. Initial wound management should include removing foreign bodies, irrigating the site, and debridement, especially if the wound is dirty. Pain management should also be provided. However, due to the location of the bite in a high-risk area, antibiotics are necessary.
Animal and Human Bites: Causes and Management
Animal and human bites are common injuries that can lead to infections caused by various microorganisms. Dogs and cats are the most common animals involved in bites, with Pasteurella multocida being the most commonly isolated organism. On the other hand, human bites can cause infections from both aerobic and anaerobic bacteria, including Streptococci spp., Staphylococcus aureus, Eikenella, Fusobacterium, and Prevotella.
To manage animal and human bites, it is important to cleanse the wound thoroughly. Puncture wounds should not be sutured closed unless there is a risk of cosmesis. The current recommendation for treatment is co-amoxiclav, but if the patient is allergic to penicillin, doxycycline and metronidazole are recommended. It is also important to consider the risk of viral infections such as HIV and hepatitis C in human bites.
In summary, animal and human bites can lead to infections caused by various microorganisms. Proper wound cleansing and appropriate antibiotic treatment are essential in managing these injuries. Additionally, healthcare providers should consider the risk of viral infections in human bites.
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This question is part of the following fields:
- Infectious Diseases
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Question 11
Incorrect
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A 45-year-old woman presents to the Emergency Department with symptoms of nausea, upper abdominal discomfort and distension. She has been taking aspirin regularly for the past 8 weeks due to a chronic back pain. She has been tested for Helicobacter pylori and was negative so the aspirin has been discontinued. A gastroscopy is performed which reveals the presence of gastritis and a benign duodenal ulcer that is not actively bleeding.
What is the most appropriate next step in managing this patient?Your Answer: Repeat H. pylori test
Correct Answer: Start intravenous proton-pump inhibitors (PPIs)
Explanation:Treatment Options for Gastric Ulcers
Gastric ulcers can be caused by long-term use of non-steroidal anti-inflammatory drugs (NSAIDs) and can lead to severe symptoms requiring hospitalization. Treatment options for gastric ulcers include intravenous proton pump inhibitors (PPIs) followed by long-term oral PPIs. A repeat gastroscopy is usually carried out to ensure that the ulcer has healed. In cases where the ulcer has perforated or is malignant, a partial gastrectomy may be indicated. Retesting for H. pylori may be necessary if the patient had previously tested positive. Adrenalin injection is only indicated for bleeding gastric ulcers. Placing the patient nil by mouth is not necessary for healing the ulcer.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 12
Incorrect
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A 55-year-old woman complains of urine leakage issues for the past six months. She reports frequent urination and difficulty reaching the toilet in time. She denies experiencing urine loss during coughing or sneezing. What is the best initial treatment option?
Your Answer: Pelvic floor muscle training
Correct Answer: Bladder retraining
Explanation:The initial treatment for urinary incontinence differs depending on the type. For urge incontinence, bladder retraining is the recommended first-line approach. On the other hand, for stress incontinence, pelvic floor muscle training is the preferred initial treatment.
Understanding Urinary Incontinence: Causes, Classification, and Management
Urinary incontinence (UI) is a common condition that affects around 4-5% of the population, with elderly females being more susceptible. Several risk factors contribute to UI, including advancing age, previous pregnancy and childbirth, high body mass index, hysterectomy, and family history. UI can be classified into different types, such as overactive bladder (OAB)/urge incontinence, stress incontinence, mixed incontinence, overflow incontinence, and functional incontinence.
Initial investigation of UI involves completing bladder diaries for at least three days, vaginal examination, urine dipstick and culture, and urodynamic studies. Management of UI depends on the predominant type of incontinence. For urge incontinence, bladder retraining and bladder stabilizing drugs such as antimuscarinics are recommended. For stress incontinence, pelvic floor muscle training and surgical procedures such as retropubic mid-urethral tape procedures may be offered. Duloxetine, a combined noradrenaline and serotonin reuptake inhibitor, may also be used as an alternative to surgery.
In summary, understanding the causes, classification, and management of UI is crucial in providing appropriate care for patients. Early diagnosis and intervention can significantly improve the quality of life for those affected by this condition.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 13
Incorrect
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A 20-year-old woman is enjoying a shrimp stir-fry at a restaurant when she suddenly experiences tongue swelling and tightness in her chest. Her partner notices her wheezing and calls for an ambulance. The woman is admitted to the hospital and undergoes necessary tests. She receives treatment for anaphylaxis, and her symptoms improve. After being monitored overnight on the ward, what crucial factor must be taken into account when determining if it is safe to discharge her the following morning?
Your Answer: Whether the hospital team have identified the trigger for the anaphylaxis
Correct Answer: The patient's remaining symptoms and his response to adrenaline
Explanation:When discharging patients who have experienced anaphylaxis, a risk-stratified approach should be taken. The patient’s response to adrenaline and their symptoms are important factors to consider. The UK Resuscitation Council guidelines suggest that patients may be considered for fast-track discharge if they have had a good response to a single dose of adrenaline within 30 minutes of the reaction, their symptoms have completely resolved, they have been trained on how to use adrenaline auto-injectors, and there is adequate supervision following discharge. While the patient’s peak expiratory flow rate and serum tryptase levels should be measured, they are not specifically advised for risk-stratifying patients for discharge post-anaphylaxis according to the UKRC guidelines. Spirometry is also not specifically recommended for this purpose. However, patients with severe asthma or those who experienced severe respiratory compromise during the anaphylactic reaction should be observed for at least 12 hours after symptom resolution.
Anaphylaxis is a severe and potentially life-threatening allergic reaction that affects the entire body. It can be caused by various triggers, including food, drugs, and insect venom. The symptoms of anaphylaxis typically occur suddenly and progress rapidly, affecting the airway, breathing, and circulation. Common signs include swelling of the throat and tongue, hoarse voice, respiratory wheeze, dyspnea, hypotension, and tachycardia. In addition, around 80-90% of patients experience skin and mucosal changes, such as generalized pruritus, erythematous rash, or urticaria.
The management of anaphylaxis requires prompt and decisive action, as it is a medical emergency. The Resuscitation Council guidelines recommend intramuscular adrenaline as the most important drug for treating anaphylaxis. The recommended doses of adrenaline vary depending on the patient’s age, ranging from 100-150 micrograms for infants under 6 months to 500 micrograms for adults and children over 12 years. Adrenaline can be repeated every 5 minutes if necessary, and the best site for injection is the anterolateral aspect of the middle third of the thigh. In cases of refractory anaphylaxis, IV fluids and expert help should be sought.
Following stabilisation, patients may be given non-sedating oral antihistamines to manage persisting skin symptoms. It is important to refer all patients with a new diagnosis of anaphylaxis to a specialist allergy clinic and provide them with an adrenaline injector as an interim measure before the specialist assessment. Patients should also be prescribed two adrenaline auto-injectors and trained on how to use them. A risk-stratified approach to discharge should be taken, as biphasic reactions can occur in up to 20% of patients. The Resus Council UK recommends a fast-track discharge for patients who have had a good response to a single dose of adrenaline and complete resolution of symptoms, while those who require two doses of IM adrenaline or have a history of biphasic reaction should be observed for at least 12 hours following symptom resolution.
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This question is part of the following fields:
- Immunology/Allergy
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Question 14
Incorrect
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As a healthcare professional, you are providing dietary recommendations to a middle-aged patient who has been diagnosed with type 2 diabetes mellitus and is struggling with obesity. According to the latest NICE guidelines, which of the following should not be promoted?
Your Answer: Initial weight loss of 5-10%
Correct Answer: Food products specifically targeted at diabetics
Explanation:According to NICE, it is not recommended to consume foods that are marketed exclusively for individuals with diabetes.
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:
- Gastroenterology/Nutrition
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Question 15
Correct
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A 35 year-old woman has been diagnosed with fibroids and has been attempting to conceive for 2 years. She has been undergoing evaluation at the sub-fertility clinic and all tests have come back normal except for the presence of three uterine fibroids, which are asymptomatic. Her partner's semen analysis showed no abnormalities.
What are the most suitable treatment options in this scenario?Your Answer: Myomectomy
Explanation:If a woman with large fibroids is experiencing fertility issues, the most effective treatment option that also preserves her ability to conceive in the future is myomectomy. However, depending on the specifics of the procedure, the woman may need to consider delivery options, such as a caesarean section, due to the risk of uterine rupture.
While GnRH agonists can shrink fibroids and make them easier to remove surgically, they also temporarily turn off the ovaries, inhibiting ovulation and making pregnancy impossible during treatment. Additionally, fibroids tend to regrow after treatment is stopped. However, when combined with myomectomy, GnRH agonists can be a suitable treatment option.
Endometrial ablation, on the other hand, destroys the endometrial lining, making it impossible for an embryo to implant. Uterine artery embolisation is also not recommended for women trying to conceive, as it significantly reduces blood supply to the uterus, making it impossible for a fetus to implant and grow.
Understanding Uterine Fibroids
Uterine fibroids are non-cancerous growths that develop in the uterus. They are more common in black women and are thought to occur in around 20% of white women in their later reproductive years. Fibroids are usually asymptomatic, but they can cause menorrhagia, which can lead to iron-deficiency anaemia. Other symptoms include lower abdominal pain, bloating, and urinary symptoms. Fibroids may also cause subfertility.
Diagnosis is usually made through transvaginal ultrasound. Asymptomatic fibroids do not require treatment, but periodic monitoring is recommended. Menorrhagia secondary to fibroids can be managed with various treatments, including the levonorgestrel intrauterine system, NSAIDs, tranexamic acid, and hormonal therapies.
Medical treatment to shrink or remove fibroids may include GnRH agonists or ulipristal acetate, although the latter is not currently recommended due to concerns about liver toxicity. Surgical options include myomectomy, hysteroscopic endometrial ablation, hysterectomy, and uterine artery embolization.
Fibroids generally regress after menopause, but complications such as subfertility and iron-deficiency anaemia can occur. Red degeneration, which is haemorrhage into the tumour, is a common complication during pregnancy.
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This question is part of the following fields:
- Reproductive Medicine
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Question 16
Correct
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A 32-year-old construction worker visits his doctor complaining of hay fever symptoms. He is experiencing frequent sneezing and a runny nose and is seeking medication to alleviate his discomfort. Considering his job, which antihistamine would be safe for him to use?
Your Answer: Loratadine
Explanation:Loratadine is an antihistamine that does not cause drowsiness. It works by targeting histamine H1 receptors to relieve allergy symptoms like sneezing and runny nose. As the patient is a heavy goods vehicle driver, it is advisable to recommend a non-sedating antihistamine like loratadine. Chlorphenamine, on the other hand, is a sedating antihistamine used in anaphylaxis treatment and is not suitable for the patient’s occupation. Cimetidine inhibits stomach acid production and does not help with allergy symptoms. Cinnarizine is a sedating antihistamine used for nausea and vomiting and may not be effective for the patient’s condition. Diphenhydramine is also a sedating antihistamine and not recommended for the patient.
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This question is part of the following fields:
- ENT
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Question 17
Correct
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A 25-year-old female presents with a history of weight loss and diarrhoea. To investigate her symptoms, she undergoes a colonoscopy and a biopsy is taken. The biopsy report indicates the presence of pigment-laden macrophages suggestive of melanosis coli. What is the probable diagnosis?
Your Answer: Laxative abuse
Explanation:Understanding Melanosis Coli
Melanosis coli is a condition that affects the pigmentation of the bowel wall. This disorder is characterized by the presence of pigment-laden macrophages, which can be observed through histology. The primary cause of melanosis coli is laxative abuse, particularly the use of anthraquinone compounds like senna.
In simpler terms, melanosis coli is a condition that causes changes in the color of the bowel wall due to the accumulation of pigments. This condition is often associated with the excessive use of laxatives, which can lead to the accumulation of pigment-laden macrophages in the bowel wall. These macrophages are responsible for the discoloration of the bowel wall, which can be observed through histology. It is important to note that melanosis coli is not a life-threatening condition, but it can be a sign of underlying health issues that need to be addressed.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 18
Correct
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A 13-year-old girl comes to her doctor with a 5-month history of aching pain and swelling in the distal part of her left thigh. She has a family history of retinoblastoma and is in good health otherwise. A radiograph of her knee reveals a sunburst pattern and a triangular area of new subperiosteal bone in the metaphyseal region of the femur. What is the most probable diagnosis?
Your Answer: Osteosarcoma
Explanation:Types of Bone Tumours
Bone tumours can be classified into two categories: benign and malignant. Benign tumours are non-cancerous and do not spread to other parts of the body. Osteoma is a common benign tumour that occurs on the skull and is associated with Gardner’s syndrome. Osteochondroma, on the other hand, is the most common benign bone tumour and is usually diagnosed in patients aged less than 20 years. It is characterized by a cartilage-capped bony projection on the external surface of a bone. Giant cell tumour is a tumour of multinucleated giant cells within a fibrous stroma and is most commonly seen in the epiphyses of long bones.
Malignant tumours, on the other hand, are cancerous and can spread to other parts of the body. Osteosarcoma is the most common primary malignant bone tumour and is mainly seen in children and adolescents. It occurs most frequently in the metaphyseal region of long bones prior to epiphyseal closure. Ewing’s sarcoma is a small round blue cell tumour that is also seen mainly in children and adolescents. It occurs most frequently in the pelvis and long bones and tends to cause severe pain. Chondrosarcoma is a malignant tumour of cartilage that most commonly affects the axial skeleton and is more common in middle-age. It is important to diagnose and treat bone tumours early to prevent complications and improve outcomes.
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This question is part of the following fields:
- Musculoskeletal
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Question 19
Incorrect
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A 27 year old woman with a confirmed diagnosis of premenstrual syndrome (PMS) visits her GP seeking medical intervention. Despite implementing recommended lifestyle changes, she has seen minimal relief in her symptoms. She has no immediate plans of starting a family. What treatment option would be appropriate to suggest, provided there are no contraindications?
Your Answer: Pyridoxine (vitamin B6)
Correct Answer: Combined oral contraceptive pill
Explanation:Understanding Premenstrual Syndrome (PMS)
Premenstrual syndrome (PMS) is a condition that affects women during the luteal phase of their menstrual cycle. It is characterized by emotional and physical symptoms that can range from mild to severe. PMS only occurs in women who have ovulatory menstrual cycles and does not occur before puberty, during pregnancy, or after menopause.
Emotional symptoms of PMS include anxiety, stress, fatigue, and mood swings. Physical symptoms may include bloating and breast pain. The severity of symptoms varies from woman to woman, and management options depend on the severity of symptoms.
Mild symptoms can be managed with lifestyle advice, such as getting enough sleep, exercising regularly, and avoiding smoking and alcohol. Specific advice includes eating regular, frequent, small, balanced meals that are rich in complex carbohydrates.
Moderate symptoms may benefit from a new-generation combined oral contraceptive pill (COCP), such as Yasmin® (drospirenone 3 mg and ethinylestradiol 0.030 mg). Severe symptoms may benefit from a selective serotonin reuptake inhibitor (SSRI), which can be taken continuously or just during the luteal phase of the menstrual cycle (for example, days 15-28, depending on the length of the cycle). Understanding PMS and its management options can help women better cope with this common condition.
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This question is part of the following fields:
- Reproductive Medicine
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Question 20
Incorrect
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As a physician on the night shift cardiac arrest team, you receive an emergency page requesting immediate assistance on the geriatric ward. Upon arrival, you discover the nursing staff performing chest compressions on an unresponsive patient with no carotid pulse. You instruct them to continue compressions while you apply defibrillator pads to the patient's chest. After a brief pause in compressions, the defibrillator monitor displays a monomorphic, broad complex tachycardia. What is the next best course of action?
Your Answer: Continue CPR at a rate of 30:2
Correct Answer: Immediately give 1 defibrillator shock followed by CPR
Explanation:When pulseless ventricular tachycardia (VT) is identified, the immediate and correct treatment is a single defibrillator shock followed by 2 minutes of CPR. This is in contrast to using intravenous adenosine or amiodarone, which are not appropriate in this scenario. The Resuscitation Council (UK) guidelines now recommend a single shock for ventricular fibrillation (VF) or pulseless VT. Administering 3 back-to-back shocks followed by 1 minute of CPR is part of the Advanced Life Support (ALS) algorithm, but it is not the most appropriate next step in management for a delayed recognition of rhythm like in the above case. In contrast, continued CPR with 30 chest compressions to 2 breaths is appropriate in a basic life support scenario where a defibrillator is not yet available.
The 2015 Resus Council guidelines for adult advanced life support outline the steps to be taken when dealing with patients with shockable and non-shockable rhythms. For both types of patients, chest compressions are a crucial part of the process, with a ratio of 30 compressions to 2 ventilations. Defibrillation is recommended for shockable rhythms, with a single shock for VF/pulseless VT followed by 2 minutes of CPR. Adrenaline and amiodarone are the drugs of choice for non-shockable rhythms, with adrenaline given as soon as possible and amiodarone administered after 3 shocks for VF/pulseless VT. Thrombolytic drugs should be considered if a pulmonary embolus is suspected. Atropine is no longer recommended for routine use in asystole or PEA. Oxygen should be titrated to achieve saturations of 94-98% following successful resuscitation. The Hs and Ts should be considered as potential reversible causes of cardiac arrest.
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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 30-year-old female presents to her GP after a missed period and a positive pregnancy test. She is thrilled to be pregnant but is worried about her epilepsy medication. What medications are safe for epileptics during pregnancy?
Your Answer: Lamotrigine
Explanation:The use of anti-epileptic medication during pregnancy is a complex issue due to the risk of severe congenital defects. Therefore, it is important to provide good contraceptive advice and planning to women of childbearing age who are taking these medications. However, in cases where a woman becomes pregnant while on anti-epileptic medication, it is crucial to seek medical advice as soon as possible.
According to recent guidelines from MBRRACE-UK and NICE, lamotrigine is the preferred medication for most women with epilepsy who are of childbearing age. In some cases, a dose increase may be necessary during pregnancy. Other medications such as phenytoin, phenobarbitone, and sodium valproate are known to have adverse effects on cognitive abilities and are generally avoided unless absolutely necessary.
For pregnant women with epilepsy, lamotrigine, carbamazepine, and levetiracetam are considered to have the least impact on the developing fetus. However, it is important for all pregnant women with epilepsy to receive specialist care and guidance throughout their pregnancy.
Pregnancy and breastfeeding can be a concern for women with epilepsy. It is generally recommended that women continue taking their medication during pregnancy, as the risks of uncontrolled seizures outweigh the potential risks to the fetus. However, it is important for women to take folic acid before pregnancy to reduce the risk of neural tube defects. The use of antiepileptic medication during pregnancy can increase the risk of congenital defects, but this risk is still relatively low. It is recommended to aim for monotherapy and there is no need to monitor drug levels. Sodium valproate is associated with neural tube defects, while carbamazepine is considered the least teratogenic of the older antiepileptics. Phenytoin is associated with cleft palate, and lamotrigine may require a dose increase during pregnancy. Breastfeeding is generally safe for mothers taking antiepileptics, except for barbiturates. Pregnant women taking phenytoin should be given vitamin K in the last month of pregnancy to prevent clotting disorders in the newborn.
A warning has been issued about the use of sodium valproate during pregnancy and in women of childbearing age. New evidence suggests a significant risk of neurodevelopmental delay in children following maternal use of this medication. Therefore, it should only be used if clearly necessary and under specialist neurological or psychiatric advice. It is important for women with epilepsy to discuss their options with their healthcare provider and make informed decisions about their treatment during pregnancy and breastfeeding.
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This question is part of the following fields:
- Neurology
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Question 22
Correct
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A 46-year-old woman who is passionate about health and fitness visits your GP clinic. She reports experiencing weight loss, increased thirst, and frequent urination. A urine dip test shows glucosuria, and her blood work indicates an HBA1c level of 63 mmol/mol. She mentions that her aunt passed away due to a pancreas problem. Despite receiving treatment for newly diagnosed diabetes, she still complains of weight loss. What factors should you take into account?
Your Answer: CT scan
Explanation:If a person develops new onset diabetes at the age of 56 and has a strong interest in health and fitness, it is unlikely that they have type 2 diabetes. Therefore, it may be necessary to investigate secondary causes of pancreatic insufficiency, such as pancreatic cancer. In such cases, a CT scan is the most appropriate diagnostic tool, while abdominal X-ray and ultrasound are unlikely to be helpful. Repeating the urine dip test is not likely to provide any additional information, and delaying treatment by repeating blood tests in 120 days would be inappropriate. This person should be treated promptly, as they are symptomatic with an HBA1c level of over 48mmol.
Understanding Pancreatic Cancer: Risk Factors, Symptoms, and Management
Pancreatic cancer is a type of cancer that is often diagnosed late due to its non-specific symptoms. Adenocarcinomas, which occur at the head of the pancreas, make up over 80% of pancreatic tumors. Risk factors for pancreatic cancer include increasing age, smoking, diabetes, chronic pancreatitis, hereditary non-polyposis colorectal carcinoma, and genetic mutations such as BRCA2 and KRAS.
Symptoms of pancreatic cancer can include painless jaundice, pale stools, dark urine, pruritus, anorexia, weight loss, epigastric pain, loss of exocrine and endocrine function, and atypical back pain. Migratory thrombophlebitis, also known as Trousseau sign, is more common in pancreatic cancer than in other cancers.
Diagnosis of pancreatic cancer can be made through ultrasound or high-resolution CT scanning, which may show the double duct sign – simultaneous dilatation of the common bile and pancreatic ducts. However, less than 20% of patients are suitable for surgery at diagnosis. A Whipple’s resection, or pancreaticoduodenectomy, may be performed for resectable lesions in the head of the pancreas. Adjuvant chemotherapy is usually given following surgery, and ERCP with stenting may be used for palliation.
In summary, pancreatic cancer is a serious disease with non-specific symptoms that can be difficult to diagnose. Understanding the risk factors and symptoms can help with early detection and management.
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This question is part of the following fields:
- Endocrinology/Metabolic Disease
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Question 23
Correct
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A 32-year-old woman with a past medical history of kidney stones awaiting elective lithotripsy attends the general practice surgery complaining of fever, fatigue and acute abdominal pain. On examination, she has a temperature of 38.5 °C, a heart rate 118 bpm, yellow sclera and her abdomen is soft but tender on palpation of the right upper quadrant.
Which of the following is the most likely diagnosis?
Your Answer: Acute cholangitis
Explanation:Acute cholangitis is a serious infection of the biliary tract that can lead to significant health complications. Symptoms typically include fever, abdominal pain (specifically in the upper right quadrant), and jaundice, which is known as Charcot’s triad. This patient is displaying all of these symptoms and has a history of gallstones, making acute cholangitis the most likely diagnosis. Treatment for acute cholangitis depends on the severity of the infection, as determined by the TG13 guideline. Patients will require intravenous fluids and antibiotics, and may need biliary drainage or intensive care support if the disease is severe. Influenza, acute cholecystitis, acute viral hepatitis, and biliary colic are all potential differential diagnoses, but do not match this patient’s symptoms and medical history.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 24
Correct
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A young man with a 5-year history of alcoholism successfully completes an inpatient drug rehabilitation programme. What advice will you give him to maintain sobriety?
Your Answer: Join a local Alcoholics Anonymous group
Explanation:Strategies for Preventing Alcohol Relapse
For individuals with alcohol-use disorders, preventing relapse is crucial for maintaining sobriety. Here are some strategies that can help:
1. Join a local Alcoholics Anonymous group or other self-help groups that require total abstinence. Active participation in these groups can offer the best chance of preventing relapses.
2. Limit consumption to socially appropriate amounts. Even small amounts of alcohol can trigger a relapse, so individuals who have completed a detoxification program are encouraged not to drink at all.
3. Take disulfiram as prescribed. This medication can cause unpleasant symptoms when alcohol is consumed, making it a deterrent for those who struggle with alcohol use. However, it should only be taken in the context of an appropriate alcohol detoxification program.
4. Take naltrexone as prescribed. This medication can help reduce cravings for alcohol, but it should not be taken as a deterrent before attending a party.
5. Plan a definite number of drinks before attending a party. However, individuals who have completed a detoxification program are still encouraged not to drink at all to prevent relapse.
By implementing these strategies, individuals with alcohol-use disorders can increase their chances of maintaining sobriety and preventing relapse.
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This question is part of the following fields:
- Psychiatry
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Question 25
Incorrect
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A 72-year-old man with chronic kidney disease is in his seventh year of haemodialysis (HD). He visits his general practitioner with symptoms of pain, numbness and tingling in both hands during the early hours of the morning. He also complains of stiffness in his shoulders, hips and knees.
What diagnosis fits best with this clinical picture?Your Answer: Uraemic neuropathy
Correct Answer: Dialysis amyloidosis
Explanation:Differentiating between potential causes of joint pain: A brief overview
Joint pain can be caused by a variety of conditions, making it important to differentiate between potential causes in order to provide appropriate treatment. Here, we will briefly discuss some of the conditions that may cause joint pain and their distinguishing features.
Dialysis amyloidosis, also known as beta-2-microglobulin (β-2m) amyloidosis, is a rare condition that affects patients undergoing long-term hemodialysis or continuous ambulatory peritoneal dialysis. It is characterized by the accumulation of β-2m, a major constituent of amyloid fibrils, which can invade synovial membranes and osteoarticular sites, causing destructive osteoarthropathies. Symptomatic relief can be provided with medication, therapy, and surgical procedures, but renal transplantation is the treatment of choice.
Rheumatoid arthritis (RA) is a chronic systemic inflammatory disease that is generally accepted to be triggered by an external factor, leading to synovial hypertrophy and chronic joint inflammation. Persistent symmetrical polyarthritis of the hands and feet is the hallmark feature of the disease.
Diabetic neuropathy is the most common complication of diabetes mellitus, affecting up to 50% of patients with type 1 and type 2 disease. It involves symptoms or signs of peripheral nerve dysfunction in people with diabetes, after other possible causes have been excluded.
Seronegative arthritis is characterized by joint pain and inflammation in the absence of serum rheumatoid factor (RF), which is present in approximately 60-80% of patients with RA.
Uraemic neuropathy is a distal sensorimotor polyneuropathy caused by uraemic toxins, which is strongly correlated with the severity of renal insufficiency. Typical symptoms include a tingling and pricking sensation in the lower extremities.
By understanding the distinguishing features of these conditions, healthcare providers can more accurately diagnose and treat joint pain in their patients.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 26
Incorrect
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A 63-year-old woman with metastatic breast cancer complains of worsening dyspnea. She is undergoing chemotherapy treatment. During the physical examination, a third heart sound is heard and the apex beat is displaced to the anterior axillary line in the 6th intercostal space. Which chemotherapy drug is most likely causing these symptoms?
Your Answer: Bleomycin
Correct Answer: Doxorubicin
Explanation:Cardiomyopathy can be caused by anthracyclines such as doxorubicin.
Cytotoxic agents are drugs that are used to kill cancer cells. There are several types of cytotoxic agents, each with their own mechanism of action and adverse effects. Alkylating agents, such as cyclophosphamide, work by causing cross-linking in DNA. However, they can also cause haemorrhagic cystitis, myelosuppression, and transitional cell carcinoma. Cytotoxic antibiotics, like bleomycin, degrade preformed DNA and can lead to lung fibrosis. Anthracyclines, such as doxorubicin, stabilize the DNA-topoisomerase II complex and inhibit DNA and RNA synthesis, but can also cause cardiomyopathy. Antimetabolites, like methotrexate, inhibit dihydrofolate reductase and thymidylate synthesis, leading to myelosuppression, mucositis, liver fibrosis, and lung fibrosis. Fluorouracil (5-FU) is a pyrimidine analogue that induces cell cycle arrest and apoptosis by blocking thymidylate synthase, but can also cause myelosuppression, mucositis, and dermatitis. Cytarabine is a pyrimidine antagonist that interferes with DNA synthesis specifically at the S-phase of the cell cycle and inhibits DNA polymerase, but can also cause myelosuppression and ataxia. Drugs that act on microtubules, like vincristine and vinblastine, inhibit the formation of microtubules and can cause peripheral neuropathy, paralytic ileus, and myelosuppression. Docetaxel prevents microtubule depolymerisation and disassembly, decreasing free tubulin, but can also cause neutropaenia. Topoisomerase inhibitors, like irinotecan, inhibit topoisomerase I which prevents relaxation of supercoiled DNA, but can also cause myelosuppression. Other cytotoxic drugs, such as cisplatin, cause cross-linking in DNA and can lead to ototoxicity, peripheral neuropathy, and hypomagnesaemia. Hydroxyurea (hydroxycarbamide) inhibits ribonucleotide reductase, decreasing DNA synthesis, but can also cause myelosuppression.
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This question is part of the following fields:
- Haematology/Oncology
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Question 27
Incorrect
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A 27-year-old woman experiences intense vomiting within four hours of consuming lunch at a nearby restaurant. What organism is the most probable cause of this reaction?
Your Answer: Escherichia coli
Correct Answer: Staphylococcus aureus
Explanation:The diagnosis can be inferred as a result of the short incubation period and intense vomiting.
Gastroenteritis can occur either at home or while traveling, known as travelers’ diarrhea. This condition is characterized by at least three loose to watery stools in 24 hours, accompanied by abdominal cramps, fever, nausea, vomiting, or blood in the stool. The most common cause of travelers’ diarrhea is Escherichia coli. Acute food poisoning is another pattern of illness that results in sudden onset of nausea, vomiting, and diarrhea after ingesting a toxin. Staphylococcus aureus, Bacillus cereus, or Clostridium perfringens are typically responsible for acute food poisoning.
There are several types of infections that can cause gastroenteritis, each with its own typical presentation. Escherichia coli is common among travelers and causes watery stools, abdominal cramps, and nausea. Giardiasis results in prolonged, non-bloody diarrhea, while cholera causes profuse, watery diarrhea and severe dehydration leading to weight loss. Shigella causes bloody diarrhea, vomiting, and abdominal pain, while Staphylococcus aureus results in severe vomiting with a short incubation period. Campylobacter typically starts with a flu-like prodrome and progresses to crampy abdominal pains, fever, and diarrhea, which may be bloody and mimic appendicitis. Bacillus cereus can cause two types of illness, vomiting within six hours, typically due to rice, or diarrheal illness occurring after six hours. Amoebiasis has a gradual onset of bloody diarrhea, abdominal pain, and tenderness that may last for several weeks.
The incubation period for gastroenteritis varies depending on the type of infection. Staphylococcus aureus and Bacillus cereus have an incubation period of 1-6 hours, while Salmonella and Escherichia coli have an incubation period of 12-48 hours. Shigella and Campylobacter have an incubation period of 48-72 hours, while Giardiasis and Amoebiasis have an incubation period of more than seven days.
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This question is part of the following fields:
- Infectious Diseases
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Question 28
Incorrect
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A 78-year-old man visits his GP complaining of a cough that has been producing green sputum and shortness of breath for the past three days. During the examination, the GP detects the presence of rhonchi. The patient's vital signs are stable. Given his medical history of type 2 diabetes, which is being managed with metformin, and heart failure, for which he is taking ramipril, bisoprolol, and furosemide, the GP suspects acute bronchitis. What is the most appropriate course of action?
Your Answer: Inhaled salbutamol
Correct Answer: Oral doxycycline
Explanation:Antibiotics may be prescribed for acute bronchitis if the patient has co-existing co-morbidities or is at high risk of complications. NICE guidelines advise against the use of antibiotics for those who are not systemically very unwell and not at high risk of complications. However, if the patient is very unwell or at risk of complications, antibiotics should be offered. In this case, the patient’s age, diabetes, and heart failure put him at high risk, so antibiotics should be offered in accordance with NICE guidelines. While local guidelines should be consulted, NICE recommends oral doxycycline as the first-line treatment. Inhaled bronchodilators should not be offered unless the patient has an underlying airway disease such as asthma. Oral flucloxacillin is not commonly used for respiratory tract infections, and IV co-amoxiclav is not necessary in this stable patient who can be managed without admission.
Acute bronchitis is a chest infection that typically resolves on its own within three weeks. It occurs when the trachea and major bronchi become inflamed, leading to swollen airways and the production of sputum. The primary cause of acute bronchitis is viral infection, with most cases occurring in the autumn or winter. Symptoms include a sudden onset of cough, sore throat, runny nose, and wheezing. While most patients have a normal chest examination, some may experience a low-grade fever or wheezing. It is important to differentiate acute bronchitis from pneumonia, which presents with different symptoms and chest examination findings.
Diagnosis of acute bronchitis is typically based on clinical presentation, but CRP testing may be used to determine if antibiotic therapy is necessary. Management involves pain relief and ensuring adequate fluid intake. Antibiotics may be considered for patients who are systemically unwell, have pre-existing health conditions, or have a CRP level between 20-100mg/L. Doxycycline is the recommended first-line treatment, but it cannot be used in children or pregnant women. Alternatives include amoxicillin.
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This question is part of the following fields:
- Respiratory Medicine
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Question 29
Incorrect
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A 38-year-old, atopic, healthcare worker presents with red wheals and itchy hands within 20 minutes of wearing latex gloves.
Which of the following is the most appropriate investigation to perform to establish a diagnosis?Your Answer: Skin-patch testing
Correct Answer: Radioallergosorbent test (RAST)
Explanation:Diagnosis of Latex Allergy: Tests and Considerations
Latex allergy is an immediate hypersensitivity reaction that is IgE-mediated. The diagnosis of latex allergy involves various tests and considerations. The first choice test for results on latex-specific IgE is the Radioallergosorbent test (RAST). Skin-prick testing with latex extracts is sensitive, specific, and rapid, but carries the risk of anaphylaxis. Skin-patch testing is useful in identifying specific allergens in patients with type IV hypersensitivity to latex products. A gluten exclusion diet would not be the most appropriate investigation if latex allergy were suspected. Complement-mediated and immune complex reactions typically produce vascular damage, so bullae and petechiae would predominate in the skin. In summary, the diagnosis of latex allergy requires careful consideration of the type of hypersensitivity reaction and appropriate testing.
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This question is part of the following fields:
- Immunology/Allergy
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Question 30
Incorrect
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A 68-year-old man presents with persistent dyspepsia that is alleviated by omeprazole. He has been taking omeprazole 20 mg daily for the past 2 years. What is a drawback of using a proton-pump inhibitor (PPI) for an extended period of time?
Your Answer: Increased risk of developing diabetes
Correct Answer: Increased risk of fractures
Explanation:According to the BNF, PPIs should be taken in the lowest effective dose for the shortest possible time, and their long-term use should be regularly evaluated. Prolonged use of PPIs can conceal the signs of stomach cancer and heighten the likelihood of osteoporosis and fractures by hindering the absorption of calcium and magnesium.
Understanding Proton Pump Inhibitors and Their Adverse Effects
Proton pump inhibitors (PPIs) are medications that block the H+/K+ ATPase of the gastric parietal cell, leading to irreversible effects. Common examples of PPIs include omeprazole and lansoprazole. While these medications are effective in treating conditions such as gastroesophageal reflux disease (GERD) and peptic ulcers, they can also have adverse effects on the body.
One of the potential adverse effects of PPIs is hyponatremia, which is a condition characterized by low levels of sodium in the blood. PPIs can also lead to hypomagnesemia, which is a deficiency of magnesium in the blood. Additionally, long-term use of PPIs has been linked to an increased risk of osteoporosis and fractures. Another potential adverse effect is microscopic colitis, which is inflammation of the colon that can cause diarrhea and abdominal pain. Finally, PPIs have been associated with an increased risk of C. difficile infections, which can cause severe diarrhea and other gastrointestinal symptoms.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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