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Question 1
Incorrect
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A 42-year-old woman presents to the Menstrual Disturbance Clinic with a complaint of abnormal pain and heavy menstrual bleeding for the past 5 years. She reports that the pain is most severe just before and during the first day of her period and that she has been passing clots. During the examination, the physician notes thickening of the uterosacral ligament and enlargement of the ovaries. Laparoscopic examination reveals the presence of 'chocolate cysts'.
What is the probable diagnosis?Your Answer: Fibroids
Correct Answer: Endometriosis
Explanation:Understanding Pelvic Conditions: Endometriosis, Adenomyosis, Fibroids, PCOS, and Chronic Pelvic Infection
Pelvic conditions can cause discomfort and pain for many women. Endometriosis is a common condition where tissue resembling the endometrium grows outside the endometrial cavity, often in the pelvis. Laparoscopy may reveal chocolate cysts and a thickened uterosacral ligament. Symptoms include continuous pelvic pain, colicky dysmenorrhoea, heavy menstrual loss, and clotting.
Adenomyosis occurs when endometrial tissue infiltrates the uterus muscle. Symptoms include dysmenorrhoea and menorrhagia. Laparoscopy may reveal subserosal endometrium, but no chocolate cysts or thickened uterosacral ligament.
Fibroids cause a bulky uterus on bimanual examination and menorrhagia, but not chocolate cysts or a bulky uterine ligament.
Polycystic ovarian syndrome (PCOS) symptoms include oligomenorrhoea, hirsutism, weight gain, and polycystic ovaries on ultrasound. Chocolate cysts and a thickened uterosacral ligament are not associated with PCOS.
Chronic pelvic infection presents with deep dyspareunia and chronic discharge, but not chocolate cysts or a thickened uterosacral ligament. Understanding these conditions can help women seek appropriate treatment and manage their symptoms.
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This question is part of the following fields:
- Gynaecology
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Question 2
Incorrect
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A 55-year-old woman is prescribed tamoxifen for the management of an oestrogen receptor positive breast cancer. What types of cancers are linked to the use of tamoxifen?
Your Answer: Adenocarcinoma of the lung
Correct Answer: Endometrial cancer
Explanation:Endometrial cancer is a type of cancer that is commonly found in women who have gone through menopause, but it can also occur in around 25% of cases before menopause. The prognosis for this type of cancer is usually good due to early detection. There are several risk factors associated with endometrial cancer, including obesity, nulliparity, early menarche, late menopause, unopposed estrogen, diabetes mellitus, tamoxifen, polycystic ovarian syndrome, and hereditary non-polyposis colorectal carcinoma. Postmenopausal bleeding is the most common symptom of endometrial cancer, which is usually slight and intermittent initially before becoming more heavy. Pain is not common and typically signifies extensive disease, while vaginal discharge is unusual.
When investigating endometrial cancer, women who are 55 years or older and present with postmenopausal bleeding should be referred using the suspected cancer pathway. The first-line investigation is trans-vaginal ultrasound, which has a high negative predictive value for a normal endometrial thickness (< 4 mm). Hysteroscopy with endometrial biopsy is also commonly used for investigation. The management of localized disease involves total abdominal hysterectomy with bilateral salpingo-oophorectomy, while patients with high-risk disease may have postoperative radiotherapy. progesterone therapy is sometimes used in frail elderly women who are not considered suitable for surgery. It is important to note that the combined oral contraceptive pill and smoking are protective against endometrial cancer.
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This question is part of the following fields:
- Gynaecology
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Question 3
Incorrect
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A 29-year-old woman who is 20-weeks pregnant comes to the emergency department after noticing a vesicular rash on her torso this morning. Upon further questioning, you discover that her 5-year-old daughter developed chickenpox last week and the patient cannot recall if she has had the condition before. She seems at ease while resting.
Serological testing for varicella zoster virus reveals the following results:
Varicella IgM Positive
Varicella IgG Negative
What is the most suitable course of action?Your Answer: Varicella zoster vaccination + oral acyclovir
Correct Answer: Oral acyclovir
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 acyclovir 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:
- Obstetrics
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Question 4
Incorrect
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A 29-year-old woman with a history of sickle cell disease visits her GP complaining of sudden fatigue, palpitations, and shortness of breath during physical activity. She has always been healthy before this. However, her daughter has been sick with a fever, fatigue, and a rash on her face for the past few days.
The patient's blood test results from three months ago showed a hemoglobin level of 116 g/L (normal range for females: 115-160 g/L), platelets at 178 * 109/L (normal range: 150-400 * 109/L), and a white blood cell count of 6.3 * 109/L (normal range: 4.0-11.0 * 109/L).
Today's blood test results show a significant drop in hemoglobin levels to 71 g/L, platelets at 110 * 109/L, and a white blood cell count of 4.1 * 109/L. The reticulocyte count is also low at 0.1% (normal range: 0.5-1.5%).
What is the most likely complication that has arisen in this case?Your Answer:
Correct Answer: Aplastic crisis
Explanation:A sudden decrease in haemoglobin is linked to aplastic crises in sickle cell disease. This condition is characterized by symptoms of anaemia and is often triggered by exposure to parvovirus B-19. The low reticulocyte count indicates acute bone marrow failure.
Sickle cell anaemia is a condition that involves periods of good health with intermittent crises. There are several types of crises that can occur, including thrombotic or painful crises, sequestration, acute chest syndrome, aplastic, and haemolytic. Thrombotic crisis, also known as painful crises or vaso-occlusive crises, are triggered by factors such as infection, dehydration, and deoxygenation. These crises are diagnosed clinically and can result in infarcts in various organs, including the bones, lungs, spleen, and brain.
Sequestration crises occur when sickling occurs within organs such as the spleen or lungs, leading to pooling of blood and worsening of anaemia. This type of crisis is associated with an increased reticulocyte count. Acute chest syndrome is caused by vaso-occlusion within the pulmonary microvasculature, resulting in infarction in the lung parenchyma. Symptoms include dyspnoea, chest pain, pulmonary infiltrates on chest x-ray, and low pO2. Management involves pain relief, respiratory support, antibiotics, and transfusion.
Aplastic crises are caused by infection with parvovirus and result in a sudden fall in haemoglobin. Bone marrow suppression leads to a reduced reticulocyte count. Haemolytic crises are rare and involve a fall in haemoglobin due to an increased rate of haemolysis. It is important to recognise and manage these crises promptly, as they can lead to serious complications and even death.
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This question is part of the following fields:
- Medicine
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Question 5
Incorrect
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A 56-year-old postmenopausal woman visits her GP complaining of increased urinary frequency and urgency for the past 4 days, along with two instances of urinary incontinence. She has a medical history of type 2 diabetes mellitus (managed with metformin) and diverticular disease. She does not smoke but admits to consuming one bottle of wine every night. During the examination, her heart rate is 106 bpm, and she experiences non-specific lower abdominal discomfort. Perineal sensation and anal tone are normal. What is the most probable cause of this patient's incontinence?
Your Answer:
Correct Answer: Urinary tract infection
Explanation:Causes and Precipitants of Urge Incontinence: A Brief Overview
Urge incontinence, characterized by involuntary leakage of urine associated with or following urgency, is a common condition in women. It is caused by overactivity of the detrusor muscle in the bladder wall, leading to irregular contractions during the filling phase and subsequent leakage of urine. While there are many causes and precipitants of urge incontinence, it is often difficult to identify a single factor in the presence of multiple contributing factors.
Some of the common causes of urge incontinence include poorly controlled diabetes, excess caffeine and alcohol intake, neurological dysfunction, urinary infection or faecal impaction, and adverse medication effects. In the case of a patient presenting with a short history of symptoms, urinary tract infection is the most likely cause, and prompt treatment is necessary to prevent complications.
It is important to rule out developing cauda equina, a medical emergency that can lead to paralysis, in patients presenting with short-term urinary incontinence. Normal anal tone and perineal sensation can help exclude this condition.
Excess alcohol and caffeine intake can precipitate symptoms of urge incontinence by inducing diuresis, causing frequency and polyuria. Chronic constipation, particularly in patients with diverticular disease, can also compress the bladder and lead to urge incontinence symptoms. Systemic illnesses such as diabetes mellitus can cause glycosuria and polyuria, leading to bladder irritation and detrusor instability. Finally, oestrogen deficiency associated with postmenopausal status can cause vaginitis and urethritis, both of which can precipitate urge incontinence symptoms.
In conclusion, urge incontinence is a complex condition with multiple contributing factors. Identifying and addressing these factors can help manage symptoms and improve quality of life for affected patients.
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This question is part of the following fields:
- Gynaecology
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Question 6
Incorrect
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A 50-year-old man with a history of haemochromatosis complains of a painful and swollen right knee. An x-ray reveals no fracture but significant chondrocalcinosis. Assuming the diagnosis is pseudogout, what is the most probable finding in the joint fluid?
Your Answer:
Correct Answer: Positively birefringent rhomboid shaped crystals
Explanation:Pseudogout is characterized by rhomboid-shaped crystals that exhibit weakly positive birefringence.
Pseudogout, also known as acute calcium pyrophosphate crystal deposition disease, is a type of microcrystal synovitis that occurs when calcium pyrophosphate dihydrate crystals are deposited in the synovium. This condition is more common in older individuals, but those under 60 years of age may develop it if they have underlying risk factors such as haemochromatosis, hyperparathyroidism, low magnesium or phosphate levels, acromegaly, or Wilson’s disease. The knee, wrist, and shoulders are the most commonly affected joints, and joint aspiration may reveal weakly-positively birefringent rhomboid-shaped crystals. X-rays may show chondrocalcinosis, which appears as linear calcifications of the meniscus and articular cartilage in the knee. Treatment involves joint fluid aspiration to rule out septic arthritis, as well as the use of NSAIDs or steroids, as with gout.
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This question is part of the following fields:
- Musculoskeletal
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Question 7
Incorrect
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A 17-year-old boy is rushed to the Emergency department following drug use at a party.
What signs indicate that he may have ingested Ecstasy (MDMA)?Your Answer:
Correct Answer: Pyrexia
Explanation:Symptoms of Ecstasy Overdose
Ecstasy overdose can lead to a range of symptoms, including hyperthermia, hypertension, hyponatremia, and respiratory alkalosis. Hyperthermia is characterized by an abnormally high body temperature, which can cause damage to organs and tissues. Hypertension, or high blood pressure, can lead to a range of health problems, including heart disease and stroke. Hyponatremia is caused by excessive drinking of water, which can lead to a condition known as syndrome of inappropriate antidiuretic hormone (SIADH). This can cause a range of symptoms, including confusion, seizures, and coma. Respiratory alkalosis is characterized by an increase in blood pH, which can cause a range of symptoms, including dizziness, confusion, and seizures. Pinpoint pupils may also suggest the presence of opiates.
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This question is part of the following fields:
- Emergency Medicine
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Question 8
Incorrect
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You are conducting an annual health review for a 60-year-old man who has hypertension, a history of myocardial infarction 18 months ago, and depression. He is currently taking amlodipine, ramipril, sertraline, atorvastatin, and aspirin. The patient reports feeling generally well, but he is experiencing erectile dysfunction since starting his medications after his heart attack. Which medication is most likely responsible for this symptom?
Your Answer:
Correct Answer: Sertraline
Explanation:Erectile dysfunction is a side-effect that is considered uncommon for amlodipine and ramipril, according to the BNF. However, SSRIs are a frequent cause of sexual dysfunction, making them the most probable medication to result in ED.
Erectile dysfunction (ED) is a condition where a man is unable to achieve or maintain an erection that is sufficient for sexual activity. It is not a disease but a symptom that can be caused by organic, psychogenic, or mixed factors. It is important to differentiate between the causes of ED, with gradual onset of symptoms, lack of tumescence, and normal libido favoring an organic cause, while sudden onset of symptoms, decreased libido, and major life events favoring a psychogenic cause. Risk factors for ED include cardiovascular disease, alcohol use, and certain medications.
To assess for ED, it is recommended to measure lipid and fasting glucose serum levels to calculate cardiovascular risk, as well as free testosterone levels in the morning. If free testosterone is low or borderline, further assessment may be needed. PDE-5 inhibitors, such as sildenafil, are the first-line treatment for ED and should be prescribed to all patients regardless of the cause. Vacuum erection devices can be used as an alternative for those who cannot or will not take PDE-5 inhibitors.
For young men who have always had difficulty achieving an erection, referral to urology is appropriate. Additionally, people with ED who cycle for more than three hours per week should be advised to stop. Overall, ED is a common condition that can be effectively managed with appropriate treatment.
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This question is part of the following fields:
- Surgery
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Question 9
Incorrect
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A 17-year-old rugby player is admitted to the emergency department after a field accident. During the examination, the physician discovers tenderness in the anatomical snuffbox and scaphoid tubercle. Which neurovascular structure is most likely to be affected?
Your Answer:
Correct Answer: Dorsal carpal arch of the radial artery
Explanation:The main neurovascular structure that is at risk in a scaphoid fracture is the dorsal carpal branch of the radial artery. This artery is responsible for supplying blood to the scaphoid bone. It is important to note that the ulnar artery is not involved in the blood supply to the scaphoid bone. The most serious complication of a scaphoid fracture is avascular necrosis. It is not possible for a scaphoid fracture to cause damage to the median or ulnar nerves as they are not anatomically related to the scaphoid bone. Although the radial nerve is located near the scaphoid bone, it is less likely to be affected than the blood vessels. This is because the radial nerve runs superficially to the tendons of the snuffbox.
Understanding Scaphoid Fractures
A scaphoid fracture is a type of wrist fracture that typically occurs when a person falls onto an outstretched hand or during contact sports. It is important to recognize this type of fracture due to the unusual blood supply of the scaphoid bone. Interruption of the blood supply can lead to avascular necrosis, which is a serious complication. Patients with scaphoid fractures typically present with pain along the radial aspect of the wrist and loss of grip or pinch strength. Clinical examination is highly sensitive and specific when certain signs are present, such as tenderness over the anatomical snuffbox and pain on telescoping of the thumb.
Plain film radiographs should be requested, including scaphoid views, but the sensitivity in the first week of injury is only 80%. A CT scan may be requested in the context of ongoing clinical suspicion or planning operative management, while MRI is considered the definite investigation to confirm or exclude a diagnosis. Initial management involves immobilization with a splint or backslab and referral to orthopaedics. Orthopaedic management depends on the patient and type of fracture, with undisplaced fractures of the scaphoid waist typically treated with a cast for 6-8 weeks. Displaced scaphoid waist fractures require surgical fixation, as do proximal scaphoid pole fractures. Complications of scaphoid fractures include non-union, which can lead to pain and early osteoarthritis, and avascular necrosis.
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This question is part of the following fields:
- Musculoskeletal
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Question 10
Incorrect
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A concerned mother visits her GP to discuss her 8-week-old baby. She is worried as he is not feeding well, his urine has a musty smell and he has very dry skin all over his trunk, which is not responding to regular emollients. On examination, the baby’s weight has dropped from the 25th to the 9th centile, he has a mild tremor and his trunk is covered in an eczema-like rash. Her older son has an inborn error of metabolism and she is concerned this baby may also be affected.
Which of the following is a disorder of amino acid metabolism?Your Answer:
Correct Answer: Phenylketonuria (PKU)
Explanation:Inherited Metabolic Disorders: Types and Symptoms
Inherited metabolic disorders are genetic conditions that affect the body’s ability to process certain nutrients. Here are some common types and their symptoms:
Phenylketonuria (PKU): This autosomal recessive condition affects amino acid metabolism. It causes a deficiency of the enzyme phenylalanine hydroxylase, which can lead to behavioural problems, seizures, and learning disability. PKU is screened for with the newborn heel prick test.
G6PD deficiency: This X-linked recessive condition predisposes those affected to develop haemolysis. It does not affect amino acid metabolism. Patients are usually asymptomatic unless they have a haemolytic crisis triggered by an infection or certain medications.
Lesch–Nyhan syndrome: This X-linked condition affects uric acid metabolism and causes hyperuricaemia. It does not affect amino acid metabolism. Affected males have severe developmental delay, behavioural and cognitive dysfunction, and marked involuntary movements. They also develop recurrent self-mutilation habits.
Medium chain acyl-CoA dehydrogenase deficiency (MCADD): This autosomal recessive condition affects fatty acid oxidation. It does not affect amino acid metabolism. Babies with MCADD usually present with lethargy, poor feeding, and vomiting. It is screened for with the newborn heel prick test.
Porphyria: This is a deficiency of enzymes that affect haem synthesis. It can lead to acute porphyria (abdominal pain, psychiatric symptoms, breathing problems) or cutaneous porphyria.
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This question is part of the following fields:
- Paediatrics
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