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Question 1
Correct
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A 50-year-old man who is on antipsychotic medication for schizophrenia complains of extreme restlessness. Which side-effect of the medication could be causing this?
Your Answer: Akathisia
Explanation:Severe restlessness may be caused by antipsychotics, known as akathisia.
Antipsychotics are a group of drugs used to treat schizophrenia, psychosis, mania, and agitation. They are divided into two categories: typical and atypical antipsychotics. The latter were developed to address the extrapyramidal side-effects associated with the first generation of typical antipsychotics. Typical antipsychotics work by blocking dopaminergic transmission in the mesolimbic pathways through dopamine D2 receptor antagonism. They are associated with extrapyramidal side-effects and hyperprolactinaemia, which are less common with atypical antipsychotics.
Extrapyramidal side-effects (EPSEs) are common with typical antipsychotics and include Parkinsonism, acute dystonia, sustained muscle contraction, akathisia, and tardive dyskinesia. The latter is a late onset of choreoathetoid movements that may be irreversible and occur in 40% of patients. The Medicines and Healthcare products Regulatory Agency has issued specific warnings when antipsychotics are used in elderly patients, including an increased risk of stroke and venous thromboembolism. Other side-effects include antimuscarinic effects, sedation, weight gain, raised prolactin, impaired glucose tolerance, neuroleptic malignant syndrome, reduced seizure threshold, and prolonged QT interval.
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This question is part of the following fields:
- Psychiatry
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Question 2
Incorrect
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A 7-year-old girl is diagnosed with nephrotic syndrome and a presumptive diagnosis of minimal change glomerulonephritis is made. What would be the most suitable course of treatment?
Your Answer: Renal biopsy followed by prednisolone
Correct Answer: Prednisolone
Explanation:A renal biopsy should only be considered if the response to steroids is inadequate.
Minimal change disease is a condition that typically presents as nephrotic syndrome, with children accounting for 75% of cases and adults accounting for 25%. While most cases are idiopathic, around 10-20% have a known cause, such as certain drugs, Hodgkin’s lymphoma, thymoma, or infectious mononucleosis. The pathophysiology of the disease involves T-cell and cytokine-mediated damage to the glomerular basement membrane, resulting in polyanion loss and reduced electrostatic charge, which increases glomerular permeability to serum albumin. The disease is characterized by nephrotic syndrome, normotension (hypertension is rare), and highly selective proteinuria, with only intermediate-sized proteins such as albumin and transferrin leaking through the glomerulus. Renal biopsy shows normal glomeruli on light microscopy, but electron microscopy reveals fusion of podocytes and effacement of foot processes.
Management of minimal change disease typically involves oral corticosteroids, which are effective in 80% of cases. For steroid-resistant cases, cyclophosphamide is the next step. The prognosis for the disease is generally good, although relapse is common. Approximately one-third of patients have just one episode, one-third have infrequent relapses, and one-third have frequent relapses that stop before adulthood.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 3
Incorrect
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A 28-year-old primip nurse has presented to you 5 days after being in contact with a child who had a vesicular rash on their face and chest. She is currently 14 weeks pregnant and has been experiencing some morning sickness, but otherwise feels fine. Her blood tests show that she is not immune to varicella zoster virus. What should be the next course of action in your management plan?
Your Answer: Oral Aciclovir
Correct Answer: A single dose of varicella-zoster immunoglobulin (VZI)
Explanation:If a pregnant woman is not immune to the varicella zoster virus and has been in close contact with someone who has the virus, it is recommended that she receive varicella-zoster immunoglobulin (VZIG) as soon as possible. VZIG can be effective up to 10 days after contact, or 10 days after the appearance of the rash in the person with the virus if there are continuous exposures.
For pregnant women who are not immune and have been exposed to chickenpox, they should be considered potentially infectious from 8-28 days after exposure if they receive VZIG, and from 8-21 days after exposure if they do not receive VZIG.
Source: RCOGChickenpox exposure in pregnancy can pose risks to both the mother and fetus, including fetal varicella syndrome. Post-exposure prophylaxis (PEP) with varicella-zoster immunoglobulin (VZIG) or antivirals should be given to non-immune pregnant women, with timing dependent on gestational age. If a pregnant woman develops chickenpox, specialist advice should be sought and oral aciclovir may be given if she is ≥ 20 weeks and presents within 24 hours of onset of the rash.
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This question is part of the following fields:
- Reproductive Medicine
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Question 4
Incorrect
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A 25-year-old woman in her second trimester of pregnancy complains of a malodorous vaginal discharge. Upon examination, it is determined that she has bacterial vaginosis. What is the best initial course of action?
Your Answer: Topical clindamycin
Correct Answer: Oral metronidazole
Explanation:Bacterial vaginosis during pregnancy can lead to various pregnancy-related issues, such as preterm labor. In the past, it was advised to avoid taking oral metronidazole during the first trimester. However, current guidelines suggest that it is safe to use throughout the entire pregnancy. For more information, please refer to the Clinical Knowledge Summary provided.
Bacterial vaginosis (BV) is a condition where there is an overgrowth of anaerobic organisms, particularly Gardnerella vaginalis, in the vagina. This leads to a decrease in the amount of lactobacilli, which produce lactic acid, resulting in an increase in vaginal pH. BV is not a sexually transmitted infection, but it is commonly seen in sexually active women. Symptoms include a fishy-smelling vaginal discharge, although some women may not experience any symptoms at all. Diagnosis is made using Amsel’s criteria, which includes the presence of thin, white discharge, clue cells on microscopy, a vaginal pH greater than 4.5, and a positive whiff test. Treatment involves oral metronidazole for 5-7 days, with a cure rate of 70-80%. However, relapse rates are high, with over 50% of women experiencing a recurrence within 3 months. Topical metronidazole or clindamycin may be used as alternatives.
Bacterial vaginosis during pregnancy can increase the risk of preterm labor, low birth weight, chorioamnionitis, and late miscarriage. It was previously recommended to avoid oral metronidazole in the first trimester and use topical clindamycin instead. However, recent guidelines suggest that oral metronidazole can be used throughout pregnancy. The British National Formulary (BNF) still advises against using high-dose metronidazole regimes. Clue cells, which are vaginal epithelial cells covered with bacteria, can be seen on microscopy in women with BV.
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This question is part of the following fields:
- Reproductive Medicine
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Question 5
Incorrect
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A human immunodeficiency virus-1 (HIV-1)-positive woman develops multiple raised purple lesions on her legs. Her CD4 count is 96 cells/mm3 (normal range: > 600 mm3) and her viral load measures greater than 500 000 copies/ml.
Which one of the following is the most likely diagnosis?Your Answer: Basal cell carcinoma (BCC)
Correct Answer: Kaposi’s sarcoma
Explanation:Differential Diagnosis for a Raised Nodular Lesion: Common Skin Conditions in HIV-1 Patients
Kaposi’s sarcoma is a prevalent tumour in HIV-1-positive individuals and a leading cause of death in these patients. It is an AIDS-defining illness in 15% of patients and commonly occurs with a CD4 count of fewer than 200 cells/mm3. Other common tumours in HIV-1 include non-Hodgkin’s lymphoma, Hodgkin’s lymphoma, and those caused by human papillomavirus. Basal cell carcinoma, the most common non-melanoma skin cancer, typically presents with a single, shiny, pearlised nodule and may ulcerate, but does not match the description in this scenario. Cryoglobulinaemia, a condition associated with hepatitis C infection, causes a vasculitic rash and does not match this scenario’s description. Fixed drug eruption describes the development of one or more annular or oval erythematous plaques resulting from systemic exposure to a drug and does not tend to cause raised nodular lesions. Melanoma is typically black/darkly pigmented and usually a single lesion, therefore it does not match the description in this scenario.
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This question is part of the following fields:
- Infectious Diseases
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Question 6
Incorrect
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A 35-year-old man visits his primary care physician complaining of dysuria and frequent urination since yesterday. He has also observed that his urine is cloudy and has a foul odor. He has no flank pain and is in good health overall. He has never had these symptoms before. Upon urinalysis, nitrites and leukocytes are detected. What is the most suitable initial treatment?
Your Answer: Gentamicin for 5 days
Correct Answer: Nitrofurantoin for 7 days
Explanation:If a man presents with symptoms of a lower UTI such as dysuria and urinary frequency, and urinalysis confirms the diagnosis with the presence of nitrates and leucocytes, treatment with either trimethoprim or nitrofurantoin is recommended. However, if there is suspicion of prostatitis or an upper UTI, referral to a specialist may be necessary. It is important to note that men require a 7-day course of antibiotics for lower UTIs, and recurrence may require further evaluation by a Urologist. Women, on the other hand, may be treated with a 3-day course of antibiotics for lower UTIs.
Urinary tract infections (UTIs) are common in adults and can affect different parts of the urinary tract. The management of UTIs depends on various factors such as the patient’s age, gender, and pregnancy status. For non-pregnant women, local antibiotic guidelines should be followed if available. Trimethoprim or nitrofurantoin for three days are recommended by NICE Clinical Knowledge Summaries. However, if the patient is aged over 65 years or has visible or non-visible haematuria, a urine culture should be sent. Pregnant women with UTIs should be treated with nitrofurantoin, amoxicillin, or cefalexin for seven days. Trimethoprim should be avoided during pregnancy as it is teratogenic in the first trimester. Asymptomatic bacteriuria in pregnant women should also be treated to prevent progression to acute pyelonephritis. Men with UTIs should be offered a seven-day course of trimethoprim or nitrofurantoin unless prostatitis is suspected. A urine culture should be sent before antibiotics are started. Catheterised patients should not be treated for asymptomatic bacteria, but if symptomatic, a seven-day course of antibiotics should be given. Acute pyelonephritis requires hospital admission and treatment with a broad-spectrum cephalosporin or quinolone for 10-14 days. Referral to urology is not routinely required for men who have had one uncomplicated lower UTI.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 7
Correct
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A 47-year-old man is seen by his General Practitioner for his annual hypertension review. He agrees to be referred to the local smoking cessation service, as he is currently experiencing chest pain.
Which of the following medications will need to be monitored closely on cessation of smoking?Your Answer: Theophylline
Explanation:The Effect of Smoking Cessation on Asthma Medications
Smoking cessation can have a significant impact on the management of asthma and the use of certain medications. Here is a breakdown of how smoking cessation affects different asthma medications:
Theophylline: Smoking induces the hepatic enzyme CYP1A2, which plays a major role in metabolizing theophylline. Therefore, quitting smoking can lead to higher plasma levels of theophylline and potentially fatal arrhythmias. Patients need to have their plasma theophylline concentration levels monitored closely and may require a reduced dose after quitting smoking.
Budesonide/formoterol: Neither budesonide nor formoterol are metabolized by CYP1A2, so there is no need for close monitoring following smoking cessation. Asthma control should improve after quitting smoking, and the inhaler dose should be reviewed as part of stepwise management.
Montelukast: Montelukast is metabolized by the cytochrome P450 system but not CYP1A2, so smoking cessation does not affect its level.
Prednisolone: Prednisolone is metabolized by the cytochrome P450 system, but CYP1A2 is not involved. Therefore, smoking cessation does not affect its metabolism.
Salbutamol: Smoking cessation can improve asthma control, leading to less frequent use of salbutamol or other reliever inhalers. There is no need to monitor this closely as reducing the as-required use of this medication poses no risk.
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This question is part of the following fields:
- Haematology/Oncology
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Question 8
Incorrect
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You see a 61-year-old man with backache.
Which ONE of the following may indicate a potentially serious pathology and hence requires referral as an emergency?
Your Answer: Unilateral leg pain worse than low back pain
Correct Answer: Perineal anaesthesia
Explanation:Back pain can have various causes, some of which may require urgent medical attention. Perineal anaesthesia, which involves numbness in the perineal, buttock, and inner thigh areas, is a red flag for back pain and may indicate cauda equina syndrome. This condition involves compression or damage to the tail of the spinal cord and requires urgent magnetic resonance imaging (MRI) for diagnosis. Other symptoms of cauda equina syndrome include severe or progressive back pain, new urinary or fecal incontinence, and lower limb weakness. Unilateral leg pain that is worse than low back pain may suggest sciatica, which can be managed conservatively without red flags. Pain radiating to the buttock on one side may also indicate nerve root irritation and can be managed in primary care if there are no red flags. However, new back pain in patients under 20 or over 55 years old should be taken seriously and may require urgent referral for further investigation. Localized neurological signs may indicate nerve root irritation, but do not necessarily require emergency referral. Red flags for back pain, such as constant, non-mechanical pain, thoracic pain, past history of malignant tumor, prolonged use of corticosteroids, and unexplained weight loss, require thorough work-up and consideration of imaging and specialist referral.
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This question is part of the following fields:
- Neurology
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Question 9
Incorrect
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A 38-year-old man with a history of Wilson’s disease and mild osteoarthritis presents with features of nephrotic syndrome.
Which medication is the most likely cause for his condition?Your Answer: Sulfasalazine
Correct Answer: d-Penicillamine
Explanation:Pharmacologic Treatments and Complications: A Review
Secondary membranous nephropathy can be caused by autoimmune diseases, infectious diseases, malignancy, and exposure to certain drugs such as captopril, gold, lithium, or penicillamine. Treatment with chelating agents like D-penicillamine is the mainstay of treatment for Wilson’s disease, but it can cause proteinuria in up to 30% of patients. Hydroxychloroquine is used for active rheumatoid arthritis but can cause ocular toxicity. Methotrexate is used for severe Crohn’s disease and rheumatoid arthritis but can cause bone marrow suppression. Topical NSAIDs are unlikely to cause systemic side-effects, while sulfasalazine can cause rare but serious side-effects in patients with G6PD deficiency. It is important to monitor patients closely for complications when using these pharmacologic treatments.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 10
Incorrect
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A 25-year-old woman presents with recurrent syncope following aerobics classes. On examination, a systolic murmur is heard that worsens with the Valsalva manoeuvre and improves on squatting. What is the most likely diagnosis?
Your Answer: Aortic stenosis
Correct Answer: Hypertrophic cardiomyopathy (HCM)
Explanation:Differentiating Causes of Syncope: A Guide
Syncope, or fainting, can be caused by a variety of underlying conditions. One such condition is hypertrophic cardiomyopathy (HCM), which often presents with syncope following exercise. Patients with HCM may also have a mid-systolic murmur and a jerky pulse, which worsens with Valsalva but improves with squatting.
Atrial fibrillation, on the other hand, typically presents with palpitations, fatigue, or shortness of breath, but not syncope. It does not cause a murmur and results in an irregularly irregular pulse.
Epilepsy is not a common cause of syncope, as typical seizures involve loss of consciousness, tensing, shaking, and postictal fatigue.
Aortic stenosis can cause dizziness and syncope, and is usually associated with angina. The murmur associated with aortic stenosis is a crescendo-decrescendo murmur that radiates to the carotids.
A vasovagal attack, while it can cause syncope, would not cause a murmur. If syncope is recurrent, other causes should be sought.
Dyspnea is a common complaint in patients with HCM, but they may also experience angina or syncope. A left ventricular apical impulse, a prominent S4 gallop, and a harsh systolic ejection murmur are typical findings. The Valsalva maneuver can increase the murmur. An echocardiogram is the diagnostic procedure of choice.
Most patients with aortic stenosis have gradually increasing obstruction for years but do not become symptomatic until their sixth to eighth decades.
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This question is part of the following fields:
- Cardiovascular
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Question 11
Incorrect
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A father brings his 4-year-old daughter to your clinic with worsening eczema. He reports that she has developed itchy blisters all over her body, including her face, torso, arms, and legs. Additionally, she is not behaving normally, eating and drinking less than usual, and not engaging with her favorite toys. She also has a fever of 39ºC. What is the most suitable course of action?
Your Answer: Advise that this is a self limiting illness and he should have regular paracetamol
Correct Answer: Refer urgently to hospital
Explanation:Immediate hospitalization and administration of IV antivirals are necessary for the treatment of eczema herpeticum, a severe condition. The child in question is exhibiting symptoms such as painful blisters, fever, and swollen lymph nodes, which require urgent medical attention. Any delay in seeking medical help could worsen the condition. Therefore, all other options are incorrect and should be avoided.
Understanding Eczema Herpeticum
Eczema herpeticum is a serious skin infection caused by herpes simplex virus 1 or 2. It is commonly observed in children with atopic eczema and is characterized by a rapidly progressing painful rash. The infection can be life-threatening, which is why it is important to seek medical attention immediately.
During examination, doctors typically observe monomorphic punched-out erosions, which are circular, depressed, and ulcerated lesions that are usually 1-3 mm in diameter. Due to the severity of the infection, children with eczema herpeticum should be admitted to the hospital for intravenous aciclovir treatment. It is important to understand the symptoms and seek medical attention promptly to prevent any complications.
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This question is part of the following fields:
- Dermatology
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Question 12
Incorrect
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A 35-year-old woman presents with lethargy, arthralgia and a facial rash and is diagnosed with systemic lupus erythematosus. Her rheumatologist initiates treatment with hydroxychloroquine. What is the most crucial parameter to monitor during her treatment?
Your Answer: Peak expiratory flow rate
Correct Answer: Visual acuity
Explanation:The use of hydroxychloroquine can lead to a serious and irreversible retinopathy.
Hydroxychloroquine: Uses and Adverse Effects
Hydroxychloroquine is a medication commonly used in the treatment of rheumatoid arthritis and systemic/discoid lupus erythematosus. It is similar to chloroquine, which is used to treat certain types of malaria. However, hydroxychloroquine has been found to cause bull’s eye retinopathy, which can result in severe and permanent visual loss. Recent data suggests that this adverse effect is more common than previously thought, and the most recent guidelines recommend baseline ophthalmological examination and annual screening, including colour retinal photography and spectral domain optical coherence tomography scanning of the macula. Despite this risk, hydroxychloroquine may still be used in pregnant women if needed. Patients taking this medication should be asked about visual symptoms and have their visual acuity monitored annually using a standard reading chart.
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This question is part of the following fields:
- Musculoskeletal
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Question 13
Correct
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A 4-year-old girl presents to the Emergency Department with haemarthrosis in the knee and elbow after a trivial injury. She is otherwise fit and well. The patient’s mother suffers from Christmas disease.
What investigation should be organised to confirm this diagnosis in this patient?Your Answer: Factor IX activity level
Explanation:Diagnostic Tests for Haemophilia and Related Conditions
Haemophilia is a genetic disorder that affects the blood’s ability to clot properly, leading to spontaneous or excessive bleeding. To diagnose haemophilia and related conditions, several diagnostic tests are available.
Factor IX Activity Level: Lack of factor IX leads to Christmas disease, the second most common type of haemophilia. To diagnose haemophilia, the levels of clotting factor present in the blood must be measured.
Platelet Count: The platelet count is usually normal in patients with haemophilia. Reduced platelets would suggest an alternative diagnosis. However, it is still important to check the platelet count to exclude thrombocytopenia as a cause of unexplained bleeding.
Activated Partial Thromboplastin Time (aPTT): Blood tests in haemophilia usually demonstrate a prolonged aPTT. However, patients with moderate disease can still have a normal aPTT if their factor activity level is > 15%.
Urinalysis: Urinalysis in patients with haemophilia may demonstrate the presence of haematuria, but by itself is not diagnostic of the condition.
von Willebrand Factor Antigen: The plasma von Willebrand factor antigen is normal in individuals with haemophilia. Reduced von Willebrand factor suggests the possibility of von Willebrand disease (VWD).
In conclusion, a combination of these diagnostic tests is necessary to diagnose haemophilia and related conditions accurately.
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This question is part of the following fields:
- Haematology/Oncology
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Question 14
Incorrect
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A 9-month-old boy is presented to the GP with a 4-week history of rash. He has no significant medical history and is meeting developmental milestones appropriately. He has received all of his scheduled immunizations, has no known allergies, and is feeding and urinating well. Upon examination, there is a symmetrical, poorly defined erythematous rash on his elbows and knees. What is the most probable diagnosis?
Your Answer: Pemphigus vulgaris
Correct Answer: Eczema
Explanation:Atopic eczema commonly appears in children before the age of 2, with symptoms often affecting the face and extensor surfaces of the body. This patient’s visible dermatitis in the extensor aspects of her body suggests a diagnosis of atopic eczema based on clinical presentation. Impetigo, pemphigus vulgaris, and psoriasis are unlikely diagnoses given the patient’s symmetrical dry rash involving the extensor aspects of the limbs.
Eczema in Children: Symptoms and Management
Eczema is a common skin condition that affects around 15-20% of children and is becoming more prevalent. It usually appears before the age of 2 and clears up in around 50% of children by the age of 5 and in 75% of children by the age of 10. The symptoms of eczema include an itchy, red rash that can worsen with repeated scratching. In infants, the face and trunk are often affected, while in younger children, it typically occurs on the extensor surfaces. In older children, the rash is more commonly seen on the flexor surfaces and in the creases of the face and neck.
To manage eczema in children, it is important to avoid irritants and use simple emollients. Large quantities of emollients should be prescribed, roughly in a ratio of 10:1 with topical steroids. If a topical steroid is also being used, the emollient should be applied first, followed by waiting at least 30 minutes before applying the topical steroid. Creams are absorbed into the skin faster than ointments, and emollients can become contaminated with bacteria, so fingers should not be inserted into pots. Many brands have pump dispensers to prevent contamination.
In severe cases, wet wrapping may be used, which involves applying large amounts of emollient (and sometimes topical steroids) under wet bandages. Oral ciclosporin may also be used in severe cases. Overall, managing eczema in children involves a combination of avoiding irritants, using emollients, and potentially using topical steroids or other medications in severe cases.
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This question is part of the following fields:
- Paediatrics
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Question 15
Correct
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A 42-year-old man was seen by his General Practitioner and diagnosed with community-acquired pneumonia. He has completed a 7-day course of antibiotics but continues to have a fever and productive cough. He is not confused, and his observations are all normal apart from a fever of 39 °C. His chest X-ray has signs of atypical pneumonia. He has no drug allergies.
Which of the following is the most appropriate antibiotic therapy?Your Answer: Clarithromycin
Explanation:Antibiotics for Different Types of Pneumonia
Pneumonia can be caused by various types of bacteria and viruses, and different antibiotics are used to treat them. Atypical pneumonia, caused by organisms such as chlamydia pneumoniae and mycoplasma pneumoniae, does not respond to amoxicillin and requires a 10-14 day course of macrolide antibiotics such as clarithromycin. On the other hand, severe hospital-acquired infections with multidrug-resistant Gram-negative bacteria are treated with aminoglycoside antibiotics like amikacin. Amoxicillin is recommended as first-line treatment for mild community-acquired pneumonia caused by Streptococcus pneumoniae and other bacteria, but it is not effective against atypical pneumonia. Imipenem, a broad-spectrum antibiotic, is used for a range of bacterial infections but not for atypical pneumonia. Cefuroxime, a second-generation cephalosporin antibiotic, is effective against certain bacteria but not indicated for atypical pneumonia. Knowing which antibiotics to use for different types of pneumonia is crucial for effective treatment.
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This question is part of the following fields:
- Infectious Diseases
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Question 16
Correct
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As a foundation doctor on the neonatal ward, you are updating a prescription chart for a premature baby born at twenty-six weeks. While reviewing the chart, you come across sildenafil. Can you explain the purpose of sildenafil in neonatal care?
Your Answer: Treating pulmonary hypertension
Explanation:Sildenafil, also known as Viagra, is typically used to treat erectile dysfunction in adults. However, it can also be used to treat pulmonary hypertension in neonates. The appropriate method for calming a distressed neonate depends on the underlying cause, which is often related to respiratory distress or pain. Gaviscon and ranitidine are sometimes used to treat gastro-oesophageal reflux, although this is not an approved use. Caffeine is sometimes used to help wean a neonate off a ventilator.
Understanding Phosphodiesterase Type V Inhibitors
Phosphodiesterase type V (PDE5) inhibitors are medications used to treat erectile dysfunction and pulmonary hypertension. These drugs work by increasing the levels of cGMP, which leads to the relaxation of smooth muscles in the blood vessels supplying the corpus cavernosum. The most well-known PDE5 inhibitor is sildenafil, also known as Viagra, which was the first drug of its kind. It is a short-acting medication that is usually taken one hour before sexual activity.
Other PDE5 inhibitors include tadalafil (Cialis) and vardenafil (Levitra). Tadalafil is longer-acting than sildenafil and can be taken on a regular basis, while vardenafil has a similar duration of action to sildenafil. However, these drugs are not suitable for everyone. Patients taking nitrates or related drugs, those with hypotension, and those who have had a recent stroke or myocardial infarction should not take PDE5 inhibitors.
Like all medications, PDE5 inhibitors can cause side effects. These may include visual disturbances, blue discolouration, non-arteritic anterior ischaemic neuropathy, nasal congestion, flushing, gastrointestinal side-effects, headache, and priapism. It is important to speak to a healthcare professional before taking any medication to ensure that it is safe and appropriate for you.
Overall, PDE5 inhibitors are an effective treatment for erectile dysfunction and pulmonary hypertension. However, they should only be used under the guidance of a healthcare professional and with careful consideration of the potential risks and benefits.
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This question is part of the following fields:
- Pharmacology/Therapeutics
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Question 17
Incorrect
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A 28-year-old man presents to the colorectal surgeons with recurrent episodes of bright red rectal bleeding over the past 5 months. During examination, a muco-epithelial defect is observed in the posterior midline of the anus. However, a complete digital rectal exam (DRE) could not be performed due to severe pain. Despite trying bulk-forming laxatives, lubricants, and topical glyceryl trinitrate (GTN), the patient has experienced little relief. What is the recommended next step in managing this likely diagnosis?
Your Answer: Seton insertion
Correct Answer: Sphincterotomy
Explanation:For cases of anal fissures that do not respond to conservative management, sphincterotomy may be considered as the next step. This is likely the case for the patient in question, who has not seen improvement with laxatives, lubricants, and topical GTN. While a high-fibre diet is important in managing anal fissures, it should be initiated alongside other conservative measures. If the patient had a perianal abscess, incision and drainage would be the appropriate treatment. For haemorrhoids, rubber band ligation would be the management, while anal fistulae would require seton insertion.
Understanding Anal Fissures: Causes, Symptoms, and Treatment
Anal fissures are tears in the lining of the distal anal canal that can be either acute or chronic. Acute fissures last for less than six weeks, while chronic fissures persist for more than six weeks. The most common risk factors for anal fissures include constipation, inflammatory bowel disease, and sexually transmitted infections such as HIV, syphilis, and herpes.
Symptoms of anal fissures include painful, bright red rectal bleeding, with around 90% of fissures occurring on the posterior midline. If fissures are found in other locations, underlying causes such as Crohn’s disease should be considered.
Management of acute anal fissures involves softening stool, dietary advice, bulk-forming laxatives, lubricants, topical anaesthetics, and analgesia. For chronic anal fissures, the same techniques should be continued, and topical glyceryl trinitrate (GTN) is the first-line treatment. If GTN is not effective after eight weeks, surgery (sphincterotomy) or botulinum toxin may be considered, and referral to secondary care is recommended.
In summary, anal fissures can be a painful and uncomfortable condition, but with proper management, they can be effectively treated. It is important to identify and address underlying risk factors to prevent the development of chronic fissures.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 18
Incorrect
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A 65-year-old woman is discharged following an uncomplicated renal transplant for end-stage renal failure from hypertension. She received a kidney with 4 out of 6 mismatched human leukocyte antigen (HLA) and is taking the appropriate medications. Thirty days postoperatively, she developed watery loose stools, followed by a skin rash that is itchy, painful and red. On examination, she has a red-violet rash affecting her hands and feet.
Investigations reveal the following:
Investigation Result Normal value
Haemoglobin (Hb) 131 g/l 115–155 g/l
White cell count (WCC) 5.4 × 109/l 4.0–11.0 × 109/l
Platelets (PLT) 280 ×109/l 150–400 × 109/l
Sodium (Na+) 139 mmol/l 135–145 mmol/l
Potassium (K+) 4.0 mmol/l 3.5–5.0 mmol/l
Urea 15.1 mmol/l 2.5–6.5 mmol/l
Creatinine (Cr) 170 μmol/l 50–120 µmol/l
Alanine aminotransferase (ALT) 54 IU/l 7–55 IU/l
Alkaline phosphatase (ALP) 165 IU/l 30–130 IU/l
Bilirubin 62 µmol/l 2–17 µmol/l
Which of the following is the most likely diagnosis?Your Answer: Azathioprine toxicity
Correct Answer: Graft-versus-host disease
Explanation:Differential Diagnosis for a Patient with Watery Diarrhea and Rash after Renal Transplantation
Graft-versus-host disease (GVHD) is a potential complication of solid organ transplantation, with a mortality rate of 75%. It typically presents with watery diarrhea, a painful red-violet rash, and raised bilirubin. Diagnosis is obtained through biopsy, and treatment involves immunosuppressants such as tacrolimus and methylprednisolone.
Acute viral hepatitis is another possible cause of diarrhea and jaundice, but the patient’s normal ALT and atypical symptoms make it unlikely. Azathioprine toxicity can cause bone marrow suppression, while Sjögren syndrome causes dry eyes and xerostomia, neither of which fit this patient’s presentation.
Viral gastroenteritis is a consideration, but the presence of a painful/itchy rash and raised bilirubin suggests a need for further investigation. Given the recent renal transplant, a high degree of suspicion for GVHD and other potential complications is warranted.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 19
Incorrect
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A characteristic clinical finding of opioid overdose is:
Your Answer: Sweating and lacrimation
Correct Answer: Bradycardia
Explanation:Understanding the Symptoms of Opioid Overdose: The Opioid Overdose Triad
Opioid overdose is a serious and potentially life-threatening condition that can result from the misuse or abuse of opioids. It is important to recognize the symptoms of opioid overdose in order to provide prompt and effective treatment. The opioid overdose triad is a set of three hallmark symptoms that are commonly seen in opioid overdose: decreased level of consciousness, pinpoint pupils, and respiratory depression.
Bradycardia, or a slow heart rate, is a common side effect of opioid overdose. However, hypothermia is not typically seen in opioid overdose and is more commonly associated with barbiturate overdose. Tachypnoea, or rapid respiration, is not a symptom of opioid overdose; instead, respiratory depression, or slow and shallow breathing, is a key feature. Prolonged hypoxia from respiratory depression can lead to permanent damage to the central nervous system or even death, even if treatment with naloxone is given. It is important to note that alcohol can also cause respiratory depression and increase the risk of overdose when taken with opioids.
Sweating and lacrimation, or excessive sweating and tearing, are frequently seen in early opioid withdrawal but are not symptoms of overdose. Pupillary constriction, or pinpoint pupils, is a hallmark feature of opioid overdose, while pupillary dilatation is not.
Recognizing the symptoms of opioid overdose, including the opioid overdose triad, is crucial for prompt and effective treatment. If you suspect someone is experiencing an opioid overdose, call for emergency medical assistance immediately.
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This question is part of the following fields:
- Pharmacology/Therapeutics
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Question 20
Incorrect
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You are requested to assess a premature infant born at 34 weeks, 48 hours after delivery without any complications. During the examination, you observe a continuous 'machinery-like' murmur and a left subclavicular thrill. Additionally, you notice a bounding pulse and a widened pulse pressure. There are no indications of cyanosis or crackles on auscultation. The mother confirms that there were no complications during pregnancy, and antenatal scans and screening did not reveal any abnormalities. There is no family history of significant illnesses. What would be the most appropriate management option for this probable diagnosis?
Your Answer: Give prostaglandin E1 to the neonate
Correct Answer: Give indomethacin to the neonate
Explanation:To promote closure of patent ductus arteriosus (PDA), indomethacin or ibuprofen is administered to the neonate. This is the correct course of action based on the examination findings. The ductus arteriosus typically closes naturally with the first breaths, but if it remains open, prostaglandin synthesis can be inhibited with medication. Administering indomethacin to the mother would not be effective. Prostaglandin would have the opposite effect and maintain the PDA’s patency, which is not desirable in this scenario. Involving surgeons or monitoring the baby without treatment would also not be appropriate. If left untreated, PDA can lead to serious complications such as pulmonary hypertension or Eisenmenger’s syndrome.
Patent ductus arteriosus is a type of congenital heart defect that is typically classified as ‘acyanotic’. However, if left untreated, it can eventually lead to late cyanosis in the lower extremities, which is known as differential cyanosis. This condition is caused by a connection between the pulmonary trunk and descending aorta that fails to close with the first breaths due to increased pulmonary flow that enhances prostaglandins clearance. Patent ductus arteriosus is more common in premature babies, those born at high altitude, or those whose mothers had rubella infection during the first trimester of pregnancy.
The features of patent ductus arteriosus include a left subclavicular thrill, a continuous ‘machinery’ murmur, a large volume, bounding, collapsing pulse, a wide pulse pressure, and a heaving apex beat. To manage this condition, indomethacin or ibuprofen is given to the neonate, which inhibits prostaglandin synthesis and closes the connection in the majority of cases. If patent ductus arteriosus is associated with another congenital heart defect that is amenable to surgery, then prostaglandin E1 is useful to keep the duct open until after surgical repair.
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This question is part of the following fields:
- Paediatrics
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Question 21
Incorrect
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Which of the following complications is most commonly associated with PUVA therapy in elderly patients?
Your Answer: Basal cell cancer
Correct Answer: Squamous cell cancer
Explanation:Squamous cell skin cancer is the most notable adverse effect of PUVA therapy in treating psoriasis.
NICE recommends a step-wise approach for chronic plaque psoriasis, starting with regular emollients and then using a potent corticosteroid and vitamin D analogue separately, followed by a vitamin D analogue twice daily, and then a potent corticosteroid or coal tar preparation if there is no improvement. Phototherapy, systemic therapy, and topical treatments are also options for management. Topical steroids should be used cautiously and vitamin D analogues may be used long-term. Dithranol and coal tar have adverse effects but can be effective.
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This question is part of the following fields:
- Dermatology
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Question 22
Correct
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A 68-year-old man comes to the Emergency Department complaining of left-sided chest pain that has been ongoing for 2 hours. He mentions experiencing similar pains that occur during exercise and subside when he rests. The patient appears to be in distress, sweating, and having difficulty breathing. An ECG is conducted, revealing new T-wave inversion in V3-V6. His troponin and d-dimer levels are as follows:
Troponin 223 ng/L (<5)
D-Dimer 932 ng/mL (< 400)
What is the most probable diagnosis?Your Answer: Non-ST-elevation myocardial infarction (NSTEMI)
Explanation:Acute coronary syndrome (ACS) is a term that covers various acute presentations of ischaemic heart disease, including ST elevation myocardial infarction (STEMI), non-ST elevation myocardial infarction (NSTEMI), and unstable angina. ACS develops in patients with ischaemic heart disease, which is the gradual build-up of fatty plaques in the coronary arteries. ACS can cause chest pain, dyspnoea, sweating, and nausea and vomiting. The two most important investigations for ACS are an ECG and cardiac markers. Treatment for ACS includes preventing worsening of presentation, revascularising the vessel is occluded, and treating pain. Patients who have had an ACS require lifelong drug therapy to reduce the risk of a further event.
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This question is part of the following fields:
- Cardiovascular
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Question 23
Correct
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A 68-year-old man presents with lower back pain. He has a medical history of prostate cancer, asthma, diabetes, and hypertension. The pain is radiating down his right leg and he is experiencing reduced power in that leg. Additionally, he has a decreased anal tone. Although the lumbar spine x-ray shows no apparent fracture, what would be the most appropriate next investigation to perform?
Your Answer: MRI lumbosacral spine
Explanation:Lower back pain accompanied by lower limb pain, limb weakness, numbness or tingling, and decreased perianal tone are red flags that suggest spinal cord compression. In this case, the patient has a history of prostate cancer, which further raises suspicion. Urgent MRI is necessary to rule out spinal cord compression, and the results should be discussed with the on-call neurosurgical team. Additional x-rays or ultrasound would not be helpful, as MRI is the preferred diagnostic tool.
Neoplastic Spinal Cord Compression: An Oncological Emergency
Neoplastic spinal cord compression is a medical emergency that affects around 5% of cancer patients. The majority of cases are due to vertebral body metastases, resulting in extradural compression. This condition is more common in patients with lung, breast, and prostate cancer.
The earliest and most common symptom of neoplastic spinal cord compression is back pain, which may worsen when lying down or coughing. Other symptoms include lower limb weakness and sensory changes such as numbness and sensory loss. The neurological signs depend on the level of the lesion, with lesions above L1 resulting in upper motor neuron signs in the legs and a sensory level. Lesions below L1 usually cause lower motor neuron signs in the legs and perianal numbness. Tendon reflexes tend to be increased below the level of the lesion and absent at the level of the lesion.
An urgent MRI is recommended within 24 hours of presentation, according to the 2019 NICE guidelines. High-dose oral dexamethasone is used for management, and urgent oncological assessment is necessary for consideration of radiotherapy or surgery.
In summary, neoplastic spinal cord compression is a serious condition that requires prompt diagnosis and management to prevent further neurological damage.
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This question is part of the following fields:
- Neurology
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Question 24
Incorrect
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A 40-year-old woman with amyotrophic lateral sclerosis is in a meeting with her clinical team to discuss her ongoing care. The team notes that she has been experiencing weight loss and increased fatigue. The patient reports struggling with chewing and swallowing food, even when it has been mashed or pureed. What is the most suitable long-term management plan for this patient?
Your Answer: Insert a nasogastric tube
Correct Answer: Insert a percutaneous gastrostomy tube
Explanation:The most appropriate way to provide nutritional support for patients with motor neuron disease is through the insertion of a percutaneous gastrostomy (PEG) tube. If a patient is struggling to feed themselves, they may initially benefit from smaller, more liquid-like meals, but if this is not sufficient, a PEG tube is a definitive long-term management option. Continuing with their current diet regimen is not recommended as it may lead to poor nutrition and a risk of aspiration. Total parenteral nutrition is only used as a last resort when there is impaired nutrient absorption. Inserting a nasogastric tube is not a suitable option as it must be removed after a few weeks to avoid adverse effects. A percutaneous jejunostomy tube is also not recommended as it is less commonly used and harder to maintain than a PEG tube.
Managing Motor Neuron Disease
Motor neuron disease is a neurological condition that affects both upper and lower motor neurons. It typically presents after the age of 40 and can manifest in different patterns, such as amyotrophic lateral sclerosis, progressive muscular atrophy, and bulbar palsy. The cause of the disease is unknown.
One medication used in the management of motor neuron disease is riluzole, which works by preventing the stimulation of glutamate receptors. It is mainly used in cases of amyotrophic lateral sclerosis and has been shown to prolong life by approximately three months.
Respiratory care is also an important aspect of managing motor neuron disease. Non-invasive ventilation, usually in the form of BIPAP, is used at night and has been associated with a survival benefit of around seven months.
Nutrition support is also crucial in managing motor neuron disease. The preferred method is percutaneous gastrostomy tube (PEG), which has been linked to prolonged survival.
Unfortunately, the prognosis for motor neuron disease is poor, with 50% of patients dying within three years.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 25
Correct
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A 60-year-old woman has been diagnosed with Parkinson's disease and is currently taking Sinemet (co-careldopa) prescribed by her neurologist. However, she is experiencing severe nausea as a side effect. What is the best anti-emetic medication to recommend?
Your Answer: Domperidone
Explanation:Understanding Parkinsonism and Its Causes
Parkinsonism is a term used to describe a group of neurological disorders that share similar symptoms with Parkinson’s disease. The causes of Parkinsonism can vary, with some cases being drug-induced, such as the use of antipsychotics or metoclopramide. Other causes include progressive supranuclear palsy, multiple system atrophy, Wilson’s disease, post-encephalitis, and dementia pugilistica, which is often seen in individuals who have suffered from chronic head trauma, such as boxers. Additionally, exposure to toxins like carbon monoxide or MPTP can also lead to Parkinsonism.
It is important to note that not all medications that cause extra-pyramidal side-effects will lead to Parkinsonism. For example, domperidone does not cross the blood-brain barrier and therefore does not cause these side-effects. Understanding the various causes of Parkinsonism can help with early diagnosis and treatment, as well as prevention in some cases. By identifying the underlying cause, healthcare professionals can tailor treatment plans to address the specific needs of each patient.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 26
Incorrect
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A 63-year-old woman presents for follow-up. She completed a 6 month course of warfarin a year ago after being diagnosed with an unprovoked, proximal deep vein thrombosis. Over the past few weeks, she has been experiencing a sensation of heaviness and aching in the same leg, accompanied by itching and some swelling that subsides each night. Her medical history includes osteoarthritis and type 2 diabetes mellitus. On examination, there are prominent varicose veins on the affected leg, and the skin above the medial malleolus is discolored. The calves have no difference in circumference. Her vital signs are as follows: temperature 36.9ºC, pulse 78/min, and blood pressure 108/82 mmHg. What is the most probable diagnosis?
Your Answer: Necrobiosis lipoidica
Correct Answer: Post-thrombotic syndrome
Explanation:The symptoms of pruritus and pain that gradually worsen, along with the results of the examination, indicate a high likelihood of post-thrombotic syndrome.
Post-Thrombotic Syndrome: A Complication of Deep Vein Thrombosis
Post-thrombotic syndrome is a clinical syndrome that may develop following a deep vein thrombosis (DVT). It is caused by venous outflow obstruction and venous insufficiency, which leads to chronic venous hypertension. Patients with post-thrombotic syndrome may experience painful, heavy calves, pruritus, swelling, varicose veins, and venous ulceration.
In the past, compression stockings were offered to patients with DVT to reduce the risk of post-thrombotic syndrome. However, current recommendations state that elastic graduated compression stockings should not be used to prevent post-thrombotic syndrome or VTE recurrence after a proximal DVT. This recommendation does not cover the use of elastic stockings for the management of leg symptoms after DVT.
Once post-thrombotic syndrome has developed, compression stockings are a recommended treatment. Other recommendations include keeping the leg elevated. It is important for healthcare providers to recognize the potential complications of DVT and to provide appropriate management to prevent the development of post-thrombotic syndrome.
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This question is part of the following fields:
- Cardiovascular
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Question 27
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 28
Incorrect
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A 36-year-old woman presents to her GP with concerns about facial flushing. She reports experiencing random episodes of redness on her face, particularly after consuming alcohol. She also mentions an increase in the number of spots on her cheeks and wonders if these symptoms are related. During the examination, the GP observes two small telangiectasia on the nose and left cheek, as well as a few small papules on each cheek. What management options should the GP suggest to alleviate the patient's symptoms?
Your Answer: Oral oxytetracycline
Correct Answer: Topical metronidazole
Explanation:For the treatment of mild to moderate acne rosacea, topical metronidazole is recommended. This patient’s symptoms, including flushing and papules, suggest acne rosacea, and as they only have a few telangiectasia and papules, topical metronidazole would be the most appropriate treatment. Laser therapy may be considered for persistent telangiectasia, but it is not necessary at this stage and would likely be arranged by a specialist. Oral isotretinoin is not used to treat acne rosacea and is reserved for severe acne vulgaris, and can only be prescribed by a specialist due to potential harmful side effects. Oral oxytetracycline would be appropriate for more severe cases of acne rosacea with troublesome papules and pustules. Topical fusidic acid is not used to treat acne rosacea but can be used for impetigo.
Understanding Rosacea: Symptoms and Management
Rosacea, also known as acne rosacea, is a chronic skin condition that has no known cause. It typically affects the nose, cheeks, and forehead, and the first symptom is often flushing. Over time, telangiectasia (visible blood vessels) may appear, followed by persistent redness with papules and pustules. In some cases, rhinophyma (enlarged nose) may develop, and there may be ocular involvement, such as blepharitis. Sunlight can exacerbate symptoms.
Mild cases of rosacea may be treated with topical metronidazole, while topical brimonidine gel may be used for patients with predominant flushing but limited telangiectasia. More severe cases may require systemic antibiotics like oxytetracycline. Patients are advised to apply high-factor sunscreen daily and use camouflage creams to conceal redness. Laser therapy may be appropriate for those with prominent telangiectasia, and patients with rhinophyma should be referred to a dermatologist.
Overall, understanding the symptoms and management of rosacea can help individuals manage their condition and improve their quality of life.
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This question is part of the following fields:
- Dermatology
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Question 29
Correct
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An 80-year-old man arrives at the Emergency Department after slipping on ice and falling backwards, hitting his head on the kerb and landing on his right arm. He did not lose consciousness and is currently feeling fine. The patient has a medical history of atrial fibrillation and is taking bisoprolol and warfarin. His INR was 2.2 four days ago. There are no visible injuries to his arm or scalp. What is the best course of action for his head injury?
Your Answer: Arrange a CT head scan to be performed within 8 hours
Explanation:NICE Guidelines for Investigating Head Injuries in Adults
Head injuries can be serious and require prompt medical attention. The National Institute for Health and Care Excellence (NICE) has provided clear guidelines for healthcare professionals to determine which adult patients need further investigation with a CT head scan. Patients who require immediate CT head scans include those with a Glasgow Coma Scale (GCS) score of less than 13 on initial assessment, suspected open or depressed skull fractures, signs of basal skull fractures, post-traumatic seizures, focal neurological deficits, and more than one episode of vomiting.
For patients with any loss of consciousness or amnesia since the injury, a CT head scan within 8 hours is recommended for those who are 65 years or older, have a history of bleeding or clotting disorders, experienced a dangerous mechanism of injury, or have more than 30 minutes of retrograde amnesia of events immediately before the head injury. Additionally, patients on warfarin who have sustained a head injury with no other indications for a CT head scan should also receive a scan within 8 hours of the injury.
It is important for healthcare professionals to follow these guidelines to ensure that patients receive appropriate and timely care for their head injuries. By identifying those who require further investigation, healthcare professionals can provide the necessary treatment and support to prevent further complications and improve patient outcomes.
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This question is part of the following fields:
- Neurology
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Question 30
Incorrect
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A 35-year-old male intravenous drug user (IVDU) presents with a productive cough and fever of 2–3 days’ duration. He had a cold last week. Other than a leukocytosis and high C-reactive protein (CRP), his blood results are normal. A chest radiograph shows bilateral cavitating pneumonia.
Which of the following is the most probable cause of his pneumonia?Your Answer: Klebsiella pneumonia
Correct Answer: Staphylococcal pneumonia
Explanation:Differentiating Types of Pneumonia: Causes and Characteristics
Pneumonia is a common respiratory infection that can be caused by various pathogens, including bacteria, viruses, and fungi. Among the bacterial causes, staphylococcal and pneumococcal pneumonia are two of the most prevalent types. However, they have distinct characteristics that can help clinicians differentiate them. In addition, other types of pneumonia, such as Pneumocystis jiroveci, Klebsiella, and fungal pneumonia, have specific risk factors and radiographic patterns that can aid in their diagnosis.
Staphylococcal pneumonia is often associated with a recent viral infection, intravenous drug use, or the presence of central lines. It typically presents as cavitating bronchopneumonia, which can be bilateral and complicated by pneumothorax, effusion, or empyema. Flucloxacillin is the drug of choice for treatment, although vancomycin can be used in penicillin-allergic patients.
Pneumococcal pneumonia, on the other hand, is more commonly acquired in the community and does not usually cause cavitating lesions. It can be suspected in patients with fever, cough, and chest pain, and is often treated with antibiotics such as penicillin or macrolides.
Pneumocystis jiroveci pneumonia is a type of fungal pneumonia that affects immunocompromised individuals, particularly those with HIV. It typically presents with an interstitial pattern on chest radiographs, rather than cavitating lesions.
Klebsiella pneumonia is another bacterial cause of cavitating pneumonia, often affecting elderly individuals or those with alcohol use disorders.
Fungal pneumonia, which can be caused by various fungi such as Aspergillus or Cryptococcus, tends to affect immunocompromised patients, but can also occur in healthy individuals exposed to contaminated environments. Its radiographic pattern can vary depending on the type of fungus involved.
In summary, understanding the different causes and characteristics of pneumonia can help clinicians make an accurate diagnosis and choose the appropriate treatment.
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This question is part of the following fields:
- Respiratory Medicine
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Question 31
Incorrect
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A concerned parent brings her 4-month-old to your clinic with a bright red lump on their scalp that has been gradually increasing in size over the past 6 weeks. What is the probable diagnosis?
Your Answer: Naevus flammeus
Correct Answer: Capillary haemangioma
Explanation:Port wine stain and naevus flammeus are two different conditions that are often confused with each other. While they both present as red or purple birthmarks, port wine stains are caused by a malformation of blood vessels in the skin, while naevus flammeus is a type of capillary malformation.
Understanding Strawberry Naevus
Strawberry naevus, also known as capillary haemangioma, is a type of skin condition that usually develops in infants within the first month of life. It is characterized by raised, erythematous, and multilobed tumours that commonly appear on the face, scalp, and back. While it is not present at birth, it can grow rapidly and reach its peak size at around 6-9 months before regressing over the next few years. In fact, around 95% of cases resolve before the child reaches 10 years of age. However, there are potential complications that may arise, such as obstructing visual fields or airway, bleeding, ulceration, and thrombocytopaenia.
Capillary haemangiomas are more common in white infants, particularly in female and premature infants, as well as those whose mothers have undergone chorionic villous sampling. In cases where treatment is necessary, propranolol is now the preferred choice over systemic steroids. Topical beta-blockers like timolol may also be used. It is important to note that there is a deeper type of capillary haemangioma called cavernous haemangioma. Understanding the nature of strawberry naevus is crucial in managing its potential complications and providing appropriate treatment.
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This question is part of the following fields:
- Dermatology
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Question 32
Incorrect
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A 25-year-old female presents to her GP complaining of pain in her right knee. She is an avid runner and reports that the pain is most noticeable after exercise. She denies any swelling or redness in the joint and has not experienced any locking of the knee. Upon examination, the knee has a full range of motion, but there is sharp pain when palpating the lateral epicondyle of the femur, especially when the knee is flexed at 30 degrees. What is the most probable diagnosis?
Your Answer: Patellar tendonitis
Correct Answer: Iliotibial band syndrome
Explanation:Iliotibial band syndrome is a prevalent reason for knee pain, especially among runners. A typical history and examination for this condition involves assessing lateral knee pain in avid runners. In contrast, Osgood-Schlatter disease, also known as tibial apophysitis, would result in pain and swelling around the tibial tubercle. Osteochondritis dissecans would cause joint locking, swelling, and tenderness. Patellar tendonitis would also cause post-exercise pain, but it would typically be located at the lower part of the patella.
Understanding Iliotibial Band Syndrome
Iliotibial band syndrome is a prevalent condition that causes lateral knee pain in runners. It affects approximately 10% of people who engage in regular running. The condition is characterized by tenderness 2-3 cm above the lateral joint line.
To manage iliotibial band syndrome, activity modification and iliotibial band stretches are recommended. These measures can help alleviate the pain and discomfort associated with the condition. However, if the symptoms persist, it is advisable to seek physiotherapy referral for further assessment and treatment.
In summary, iliotibial band syndrome is a common condition that affects runners. It is important to recognize the symptoms and seek appropriate management to prevent further complications. With the right treatment, individuals can continue to engage in running and other physical activities without experiencing pain and discomfort.
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This question is part of the following fields:
- Musculoskeletal
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Question 33
Correct
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A 47-year-old man is found to have a blood pressure of 180/110 mmHg on multiple readings. He undergoes investigation for secondary hypertension. Computed tomography (CT) imaging shows a 4.3 cm right-sided adrenal lesion. Below are his blood results. He is listed for elective adrenalectomy.
Investigation Result Normal reference range
Plasma free metanephrines 3000 pmol/l 80-510 pmol/l
Which of the following treatments should be started to commence preparation of this patient for surgery for removal of adrenal phaeochromocytoma?Your Answer: Alpha-adrenergic receptor blockers
Explanation:Management of Phaeochromocytoma: Medications and Interventions
Phaeochromocytoma is a neuroendocrine tumor that secretes adrenaline and noradrenaline, leading to sympathetic stimulation and clinical symptoms such as tachycardia, hypertension, anxiety, diaphoresis, and weight loss. Diagnosis is made through the measurement of catecholamines and metanephrines in plasma or urine. Surgery is required, but patients are at high risk due to potential life-threatening tachycardia and hypertension. The following medications and interventions are used in the management of phaeochromocytoma:
Alpha-adrenergic receptor blockers: Phenoxybenzamine or doxazosin are used to dampen sympathetic stimulation by blocking alpha-adrenoceptors.
Beta-adrenergic receptor blockers: Beta-blockers are used after alpha-blockers to avoid unopposed alpha-receptor stimulation, which can cause a hypertensive crisis.
Calcium channel blockers: These are not commonly used in phaeochromocytoma management but may be used as an antihypertensive in certain populations or as an anti-anginal drug.
Intravenous fluids: IV fluids should be readily available for all surgeries to address potential blood loss and hypotension following surgery.
Low-salt diet and low fluid intake: These interventions are not typically used in phaeochromocytoma management but may be used for chronic hypertension or fluid overload.
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This question is part of the following fields:
- Endocrinology/Metabolic Disease
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Question 34
Incorrect
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Which of the following types of anti-anginal medication do patients frequently develop tolerance to?
Your Answer: Nicorandil
Correct Answer: Standard release isosorbide mononitrate
Explanation:Angina pectoris is a condition that can be managed through various methods, including lifestyle changes, medication, percutaneous coronary intervention, and surgery. In 2011, NICE released guidelines for the management of stable angina. Medication is an important aspect of treatment, and all patients should receive aspirin and a statin unless there are contraindications. Sublingual glyceryl trinitrate can be used to abort angina attacks. The first-line medication should be either a beta-blocker or a calcium channel blocker, depending on the patient’s comorbidities, contraindications, and preferences. If a calcium channel blocker is used as monotherapy, a rate-limiting one such as verapamil or diltiazem should be used. If used in combination with a beta-blocker, a longer-acting dihydropyridine calcium channel blocker should be used. Beta-blockers should not be prescribed concurrently with verapamil due to the risk of complete heart block. If the initial treatment is not effective, medication should be increased to the maximum tolerated dose. If a patient is still symptomatic after monotherapy with a beta-blocker, a calcium channel blocker can be added, and vice versa. If a patient cannot tolerate the addition of a calcium channel blocker or a beta-blocker, other drugs such as long-acting nitrates, ivabradine, nicorandil, or ranolazine can be considered. Nitrate tolerance is a common issue, and patients who take standard-release isosorbide mononitrate should use an asymmetric dosing interval to maintain a daily nitrate-free time of 10-14 hours to minimize the development of nitrate tolerance. This effect is not seen in patients who take once-daily modified-release isosorbide mononitrate. If a patient is taking both a beta-blocker and a calcium-channel blocker, a third drug should only be added while awaiting assessment for PCI or CABG.
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This question is part of the following fields:
- Cardiovascular
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Question 35
Correct
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An 80-year-old man is brought to the emergency department by ambulance after being found on the floor at home. He is disoriented and unable to provide a clear history. His relatives are yet to arrive. He has a GCS of 12. On examination you note crackles at the left base on auscultation, an ejection systolic murmur over the left sternal edge, and a soft, nontender abdomen. His right pupil is slightly dilated compared to the left and is sluggish to react to light. He has no obvious injuries.
What is the most appropriate, immediate source of action to aid in diagnosis?Your Answer: CT brain
Explanation:Immediate CT scan is necessary to evaluate for raised intracranial pressure and tentorial herniation in a patient with a sluggishly responsive unilaterally dilated pupil. This is the most pressing concern, given the patient’s reduced GCS. Although other investigations will be necessary, the CT brain is the most critical test, as the patient may require urgent neurosurgical intervention to save their life.
Patients with head injuries should be managed according to ATLS principles and extracranial injuries should be managed alongside cranial trauma. There are different types of traumatic brain injuries, including extradural hematoma, subdural hematoma, and subarachnoid hemorrhage. Primary brain injury may be focal or diffuse, and secondary brain injury can occur due to cerebral edema, ischemia, infection, or herniation. Management may include IV mannitol/frusemide, decompressive craniotomy, and ICP monitoring. Pupillary findings can provide information on the location and severity of the injury.
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This question is part of the following fields:
- Neurology
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Question 36
Incorrect
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A 70-year-old retired car mechanic who is a smoker is diagnosed with lung cancer. Some fifteen years ago he was treated with surgery and adjuvant chemotherapy for bladder cancer. His brother had oesophageal cancer aged 66 and another brother had prostate cancer in his 70s. His 55-year-old daughter was recently diagnosed with breast cancer.
Which of the following is the most likely explanation for the cancers in your patient?Your Answer: A hereditary cancer predisposition syndrome
Correct Answer: Exposure to tobacco smoke
Explanation:Understanding the Possible Causes of Multiple Cancers in an Individual
It is not uncommon for an individual to develop two different types of cancer over their lifetime. In a case where a man has been diagnosed with both bladder and lung cancer, the possible causes need to be explored.
Exposure to tobacco smoke is the most likely cause of both cancers in this case. Smoking is responsible for 85% of lung cancers and is also the biggest risk factor for developing bladder cancer.
Exposure to asbestos or aniline dyes are not likely causes of both cancers. While asbestos exposure is associated with mesothelioma, it is not linked to bladder cancer. Similarly, aniline dyes increase the risk of bladder cancer but not lung cancer.
A hereditary cancer predisposition syndrome is also an unlikely cause in this case. While it is possible for an individual to have a genetic predisposition to developing multiple cancers, there are no specific patterns in the family history that suggest this.
Finally, the second tumor is not a late complication of chemotherapy. While previous cancer treatment could potentially increase the risk of developing lung cancer, smoking is still the most likely cause in this case.
In conclusion, exposure to tobacco smoke is the most likely cause of both bladder and lung cancer in this individual. It is important to identify the possible causes of multiple cancers in an individual to ensure appropriate treatment and management.
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This question is part of the following fields:
- Haematology/Oncology
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Question 37
Incorrect
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A 72-year-old woman with a history of atrial fibrillation presents with abdominal pain and bloody diarrhoea. During examination, her temperature is 37.8ºC, pulse 102 / min, and respiratory rate 30 / min. She has generalised guarding and tenderness in her abdomen. Blood tests reveal the following results: Hb 10.9 g/dl, MCV 76 fl, Plt 348 * 109/l, WBC 23.4 * 109/l, Na+ 141 mmol/l, K+ 5.0 mmol/l, Bicarbonate 14 mmol/l, Urea 8.0 mmol/l, and Creatinine 118 µmol/l. What is the most probable diagnosis?
Your Answer: Campylobacter infection
Correct Answer: Mesenteric ischaemia
Explanation:The presence of low bicarbonate levels indicates a metabolic acidosis, which strongly indicates the possibility of mesenteric ischemia.
Bowel Ischaemia: Types, Features, and Management
Bowel ischaemia is a condition that can affect the lower gastrointestinal tract and can result in various clinical conditions. Although there is no standard classification, it is helpful to categorize cases into three main conditions: acute mesenteric ischaemia, chronic mesenteric ischaemia, and ischaemic colitis. Common predisposing factors for bowel ischaemia include increasing age, atrial fibrillation (particularly for mesenteric ischaemia), other causes of emboli, cardiovascular disease risk factors, and cocaine use. Common features of bowel ischaemia include abdominal pain, rectal bleeding, diarrhea, fever, and elevated white blood cell count associated with lactic acidosis.
Acute mesenteric ischaemia is typically caused by an embolism resulting in occlusion of an artery that supplies the small bowel, such as the superior mesenteric artery. Urgent surgery is usually required for management, and prognosis is poor, especially if surgery is delayed. Chronic mesenteric ischaemia is a relatively rare clinical diagnosis that may be thought of as intestinal angina, with intermittent abdominal pain occurring. Ischaemic colitis describes an acute but transient compromise in the blood flow to the large bowel, which may lead to inflammation, ulceration, and hemorrhage.
Diagnosis of bowel ischaemia is typically done through CT scans. In acute mesenteric ischaemia, the abdominal pain is typically severe, of sudden onset, and out-of-keeping with physical exam findings. In chronic mesenteric ischaemia, the symptoms are non-specific. In ischaemic colitis, thumbprinting may be seen on abdominal x-ray due to mucosal edema/haemorrhage. Management of bowel ischaemia is usually supportive, but surgery may be required in a minority of cases if conservative measures fail. Indications for surgery would include generalized peritonitis, perforation, or ongoing hemorrhage.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 38
Incorrect
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A 62-year-old retired construction worker is found to have haematuria during a routine check-up. He has a past history of hypertension, for which he takes medication. An abdominal X-ray shows no signs of renal stones. Blood tests reveal elevated plasma viscosity and mild anaemia, with a haemoglobin level of 110 g/l (reference range 120–160 g/l) and a slightly low ferritin level.
What is the most likely diagnosis based on this clinical presentation?Your Answer: Analgesic nephropathy
Correct Answer: Bladder cancer
Explanation:Bladder cancer is a prevalent type of urologic cancer that has a high recurrence rate. The most common type is transitional cell carcinoma, which is associated with environmental exposure, particularly smoking and certain occupations. Symptoms include painless gross hematuria, irritative bladder symptoms, and pelvic pain. Diagnosis is made through cystoscopy, which allows for biopsy and resection of papillary tumors. Treatment for non-muscle-invasive bladder cancer involves transurethral resection of the bladder tumor, followed by intravesical chemotherapy, intravesical BCG vaccine, and repeat resection and/or cystectomy in persistent or recurrent high-risk disease. Muscle-invasive bladder cancer is treated surgically, possibly with neoadjuvant chemotherapy.
Chronic urinary tract infections typically present as dysuria or irritative voiding symptoms and are most commonly caused by infection with the original bacterial isolate in young, otherwise healthy women. Women with recurrent symptomatic UTIs can be treated with continuous or post-coital prophylactic antibiotics.
Interstitial cystitis is an ongoing inflammation of the lower urinary tract that is not caused by pathogenic organisms. It affects mainly women over the age of 40 and presents as severe lower abdominal pain and polyuria. It is generally a diagnosis of exclusion.
Analgesic nephropathy is characterized by kidney injury caused by excessive use of analgesic medications such as aspirin and other NSAIDs and paracetamol. This leads to renal papillary necrosis and chronic interstitial nephritis. Most healthy kidneys contain enough physiologic reserve to compensate for this NSAID-induced decrease in blood flow.
Acute interstitial nephritis is a type of hypersensitivity nephropathy that is often drug-associated. Patients present with an abrupt onset of renal dysfunction, fever, and occasionally a rash.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 39
Incorrect
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A 55-year-old woman seeks guidance on managing her menopausal symptoms. She has experienced cessation of her menstrual cycle and is bothered by hot flashes and night sweats. Due to her sister's breast cancer, she is not interested in hormone replacement therapy. What is the most suitable treatment option to suggest?
Your Answer: Evening primrose oil
Correct Answer: Citalopram
Explanation: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 40
Incorrect
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An 82-year-old woman is diagnosed with Alzheimer’s disease and the next appropriate step is likely starting her on donepezil. She has a past medical history of ischaemic heart diseases, pacemaker insertion for bradyarrhythmias, diabetes mellitus type II, hypercholesterolaemia and general anxiety disorder (GAD).
Which one of the following could be a contraindication to the prescription of donepezil?
Your Answer: General anxiety disorder (GAD)
Correct Answer: Bradycardia
Explanation:Contraindications and Considerations for the Use of Donepezil
Donepezil is a medication used to treat Alzheimer’s disease. However, there are certain contraindications and considerations that healthcare professionals should keep in mind when prescribing this medication.
Bradycardia, a condition where the heart beats too slowly, is a relative contraindication for the use of donepezil. This medication may cause bradycardia and atrioventricular node block, so caution should be taken in patients with other cardiac abnormalities. Additionally, patients with asthma, chronic obstructive pulmonary disease, supraventricular conduction abnormalities, susceptibility to peptic ulcers, and sick-sinus syndrome should also be closely monitored when taking donepezil.
Concurrent use of simvastatin, a medication used to lower cholesterol levels, is not a concern when taking donepezil. General anxiety disorder (GAD) and diabetes mellitus type II are also not contraindications for the use of donepezil.
However, elderly patients with a known history of persistent bradycardia, heart block, recurrent unexplained syncope, or concurrent treatment with drugs that reduce heart rate should avoid donepezil. A history of ischaemic heart diseases alone is not a contraindication for donepezil.
In summary, healthcare professionals should carefully consider a patient’s medical history and current medications before prescribing donepezil. Close monitoring is necessary in patients with certain cardiac abnormalities and caution should be taken in elderly patients with a history of bradycardia or heart block.
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This question is part of the following fields:
- Neurology
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Question 41
Correct
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Endometrial cancer is a type of cancer that affects the lining of the uterus. What is true about this type of cancer?
Your Answer: The tumour is confined to myometrial invasion in stage 1 of the FIGO staging system.
Explanation:Understanding Endometrial Cancer: Causes, Stages, and Treatment Options
Endometrial cancer is a type of cancer that affects the lining of the uterus. It is the most common female genital cancer in the developing world, and an estimated 3% of women in developed countries will be diagnosed with this malignancy at some point in their lifetime. Here are some key points to understand about endometrial cancer:
Causes:
– It is more common among women using progestogen-containing oral contraceptives.
– Non-hormonal uterine devices have also been found to be strongly protective.
– There are two pathogenic types of endometrial cancer, one of which is associated with obesity, hyperlipidaemia, signs of hyperoestrogenism, and other disease states.Stages:
– The FIGO staging system is used to determine the stage of endometrial cancer.
– Staging is the most important prognostic factor.
– The earlier endometrial cancer is diagnosed, the higher the rate of survival at 5 years.Treatment:
– Standard management of endometrial cancer at diagnosis involves surgery, followed by chemotherapy with or without radiation therapy.
– It is most effectively treated by a combination of radiotherapy and hormone-based chemotherapy.
– The prognosis varies depending on the stage and type of endometrial cancer.Overall, understanding the causes, stages, and treatment options for endometrial cancer is important for early detection and effective management of this malignancy.
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This question is part of the following fields:
- Reproductive Medicine
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Question 42
Correct
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A 67-year-old man attending the respiratory clinic receives a suspected diagnosis of chronic obstructive pulmonary disease.
Which of the following is the most appropriate investigation to confirm diagnosis?Your Answer: Spirometry
Explanation:Investigations for COPD: Spirometry is Key
COPD is a chronic obstructive airway disease that is diagnosed through a combination of clinical history, signs, and investigations. While several investigations may be used to support a diagnosis of COPD, spirometry is the most useful and important tool. A spirometer is used to measure functional lung volumes, including forced expiratory volume in 1 s (FEV1) and forced vital capacity (FVC). The FEV1:FVC ratio provides an estimate of the severity of airflow obstruction, with a normal ratio being 75-80%. In patients with COPD, the ratio is typically <0.7 and FEV1 <80% predicted. Spirometry is essential for establishing a baseline for disease severity, monitoring disease progression, and assessing the effects of treatment. Other investigations, such as echocardiography, chest radiography, ECG, and peak flow, may be used to exclude other pathologies or assess comorbidities, but spirometry remains the key investigation for diagnosing and managing COPD.
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This question is part of the following fields:
- Respiratory Medicine
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Question 43
Incorrect
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A 45-year-old woman presents with a 3-day history of cough, fever and left-sided pleuritic pain. On examination she has a temperature of 38.5 °C, a respiratory rate of 37/min, a blood pressure of 110/80 mm/Hg and a pulse rate of 110/min. Oxygen saturations are 95%. She has basal crepitations and dullness to percussion at the left lung base.
Which of the following is the most likely diagnosis?
Your Answer: Malignant mesothelioma
Correct Answer: Bronchopneumonia
Explanation:Differential Diagnosis for a Patient with Cough and Fever: Bronchopneumonia vs. Other Conditions
Bronchopneumonia is a common condition that presents with a cough and fever, along with other symptoms such as sputum production, dyspnea, and pleuritic pain. Examination findings may include decreased breath sounds and focal chest signs. A chest radiograph can confirm the diagnosis. In primary care, a CRB-65 score is used to assess mortality risk and determine where to treat the patient: one point each for acute confusion, respiratory rate (RR) ≥30/min, systolic blood pressure (BP) <90 mmHg or diastolic BP <60 mmHg, age >65 years).
CRB-65 score Mortality risk (%) – Where to treat
0 <1 At home
1-2 1-10 Hospital advised, particularly score of 2
3-4 >10 Hospital advised, may require stay in intensive therapy unit (ITU).Other conditions that may present with similar symptoms include pneumothorax, pulmonary embolism, malignant mesothelioma, and tuberculosis. However, these conditions have distinct features that differentiate them from bronchopneumonia. For example, pneumothorax involves partial or full collapse of a lung, while pulmonary embolism results from obstruction of one or more of the pulmonary arteries. Malignant mesothelioma is a cancer that affects the pleura and peritoneum, and tuberculosis usually presents with a persistent productive cough, weight loss, night sweats, fevers, lymphadenopathy, and general malaise.
It is important to consider these differentials when evaluating a patient with cough and fever, and to use appropriate diagnostic tools to confirm the diagnosis and determine the best course of treatment.
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This question is part of the following fields:
- Respiratory Medicine
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Question 44
Correct
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A 35-year-old female patient visits her general practitioner with a concern of experiencing bleeding following sexual intercourse. What is the most frequently identifiable reason for postcoital bleeding?
Your Answer: Cervical ectropion
Explanation:Postcoital bleeding is most commonly caused by cervical ectropion.
Understanding Postcoital Bleeding
Postcoital bleeding refers to vaginal bleeding that occurs after sexual intercourse. In approximately 50% of cases, no identifiable pathology is found. However, cervical ectropion is the most common identifiable cause, accounting for around 33% of cases. This condition is more prevalent in women who are taking the combined oral contraceptive pill. Other potential causes of postcoital bleeding include cervicitis, which may be due to Chlamydia infection, cervical cancer, polyps, and trauma.
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This question is part of the following fields:
- Reproductive Medicine
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Question 45
Incorrect
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A 67-year-old female presents to rheumatology out-patients referred by her GP due to a history of arthritis in both hands. What x-ray finding would indicate a higher likelihood of rheumatoid arthritis compared to other potential causes?
Your Answer: Subchondral cysts
Correct Answer: Juxta-articular osteoporosis
Explanation:Early x-ray signs of rheumatoid arthritis include juxta-articular osteoporosis/osteopenia, which distinguishes it from osteoarthritis. Both RA and osteoarthritis may exhibit joint space reduction.
X-Ray Changes in Rheumatoid Arthritis
Rheumatoid arthritis is a chronic autoimmune disease that affects the joints, causing pain, stiffness, and swelling. X-ray imaging is often used to diagnose and monitor the progression of the disease. Early x-ray findings in rheumatoid arthritis include a loss of joint space, juxta-articular osteoporosis, and soft-tissue swelling. These changes indicate that the joint is being damaged and that the bones are losing density.
As the disease progresses, late x-ray findings may include periarticular erosions and subluxation. Periarticular erosions are areas of bone loss around the joint, while subluxation refers to the partial dislocation of the joint. These changes can lead to deformities and functional impairment.
It is important to note that x-ray findings may not always correlate with the severity of symptoms in rheumatoid arthritis. Some patients may have significant joint damage on x-ray but experience minimal pain, while others may have severe pain despite minimal x-ray changes. Therefore, x-ray imaging should be used in conjunction with other clinical assessments to determine the best course of treatment for each individual patient.
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This question is part of the following fields:
- Musculoskeletal
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Question 46
Incorrect
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A 25-year-old female patient presents with a persistent cough and runny nose for the past 48 hours. She seeks treatment for her symptoms, but you explain that she is likely experiencing a common cold that will resolve on its own. What is the most frequent cause of the common cold?
Your Answer: Respiratory syncytial virus
Correct Answer: Rhinovirus
Explanation:Rhinoviruses are responsible for causing the common cold, while respiratory syncytial virus is a common cause of bronchiolitis. Influenza virus is the culprit behind the flu, while Streptococcus pneumonia is the most frequent cause of community-acquired pneumonia. Parainfluenza virus is commonly associated with croup.
Respiratory Pathogens and Their Associated Conditions
Respiratory pathogens are microorganisms that cause infections in the respiratory system. The most common respiratory pathogens include respiratory syncytial virus, parainfluenza virus, rhinovirus, influenza virus, Streptococcus pneumoniae, Haemophilus influenzae, Staphylococcus aureus, Mycoplasma pneumoniae, Legionella pneumophilia, and Pneumocystis jiroveci. Each of these pathogens is associated with a specific respiratory condition.
Respiratory syncytial virus is known to cause bronchiolitis, while parainfluenza virus is associated with croup. Rhinovirus is the most common cause of the common cold, while influenza virus causes the flu. Streptococcus pneumoniae is the most common cause of community-acquired pneumonia, and Haemophilus influenzae is the most common cause of bronchiectasis exacerbations and acute epiglottitis. Staphylococcus aureus is known to cause pneumonia, particularly following influenza. Mycoplasma pneumoniae causes atypical pneumonia, which is characterized by flu-like symptoms that precede a dry cough. Legionella pneumophilia is another cause of atypical pneumonia, which is typically spread by air-conditioning systems and causes a dry cough. Pneumocystis jiroveci is a common cause of pneumonia in HIV patients, and patients typically have few chest signs and develop exertional dyspnea. Mycobacterium tuberculosis causes tuberculosis, which can present in a wide range of ways, from asymptomatic to disseminated disease. Cough, night sweats, and weight loss may be seen in patients with tuberculosis.
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This question is part of the following fields:
- Respiratory Medicine
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Question 47
Incorrect
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A 28-year-old woman visits her primary care physician complaining of a fishy-smelling watery discharge from her vagina, which worsens after sexual activity. What test would be the most helpful in diagnosing her condition?
Your Answer: High vaginal swab for sexually transmitted infections
Correct Answer: Test vaginal pH
Explanation:Diagnostic Tests for Bacterial Vaginosis
Bacterial vaginosis (BV) is a common vaginal infection caused by a shift in the vaginal flora, resulting in a change in pH. Here are some diagnostic tests that can be used to identify BV:
1. Test vaginal pH: A vaginal pH of > 4.5 in conjunction with a fishy odour and the characteristic discharge is diagnostic of BV.
2. Blood serology testing: BV cannot be diagnosed through blood serology testing as it is not caused by a single organism.
3. High vaginal swab for sexually transmitted infections: BV is not a sexually transmitted infection, but the presence of other STIs can increase the prevalence of BV.
4. Low vaginal swab: A culture of the vaginal organisms via a low vaginal swab is not a useful way to diagnose BV.
5. Urinary microscopy, sensitivity, and culture: Urinary culture is not used to diagnose BV. Diagnosis is based on characteristic findings at examination.
In conclusion, a combination of a high vaginal swab for STIs and a test for vaginal pH can be used to diagnose BV.
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This question is part of the following fields:
- Infectious Diseases
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Question 48
Incorrect
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A 19-year-old long-distance runner who is currently preparing for a regional marathon seeks an appointment with the team doctor due to an unusual sensation in her legs. She reports feeling numbness below her knee. During the examination, the doctor observes sensory loss below the left knee in a non-dermatomal distribution. The team doctor suspects a non-organic cause of her symptoms. What type of disorder is this an example of?
Your Answer: Hypochondrial disorder
Correct Answer: Conversion disorder
Explanation:Conversion disorder is a condition that often results in the loss of motor or sensory function and is believed to be triggered by stress.
Psychiatric Terms for Unexplained Symptoms
There are various psychiatric terms used to describe patients who exhibit symptoms for which no organic cause can be found. One such disorder is somatisation disorder, which involves the presence of multiple physical symptoms for at least two years, and the patient’s refusal to accept reassurance or negative test results. Another disorder is illness anxiety disorder, which is characterized by a persistent belief in the presence of an underlying serious disease, such as cancer, despite negative test results.
Conversion disorder is another condition that involves the loss of motor or sensory function, and the patient does not consciously feign the symptoms or seek material gain. Patients with this disorder may be indifferent to their apparent disorder, a phenomenon known as la belle indifference. Dissociative disorder, on the other hand, involves the process of ‘separating off’ certain memories from normal consciousness, and may manifest as amnesia, fugue, or stupor. Dissociative identity disorder (DID) is the most severe form of dissociative disorder and was previously known as multiple personality disorder.
Factitious disorder, also known as Munchausen’s syndrome, involves the intentional production of physical or psychological symptoms. Finally, malingering is the fraudulent simulation or exaggeration of symptoms with the intention of financial or other gain. Understanding these psychiatric terms can help healthcare professionals better diagnose and treat patients with unexplained symptoms.
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This question is part of the following fields:
- Psychiatry
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Question 49
Incorrect
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After being stung by a bee, a 20-year-old man visits his General Practitioner with swollen face and lips, along with wheezing. He is experiencing breathing difficulties and his blood pressure is 83/45 mmHg as per manual reading.
What would be the most suitable course of action to manage this situation?Your Answer: Give 1 : 1 000 intravenous (iv) adrenaline
Correct Answer: Give 1 : 1 000 intramuscular (im) adrenaline
Explanation:Administering Adrenaline for Anaphylaxis: Dosage and Route
Anaphylaxis is a severe medical emergency that requires immediate treatment. The administration of adrenaline is crucial in managing anaphylactic shock. However, the dosage and route of administration depend on the severity of the symptoms.
For mild symptoms, such as skin rash or itching, the administration of iv hydrocortisone and chlorpheniramine is sufficient. But if the symptoms progress to involve the airways or circulation, adrenaline should be given as soon as possible. The recommended dosage for intramuscular (im) adrenaline is 1:1000.
It’s important to note that the dosage for cardiac arrest is different, and it’s given intravenously (iv) at a concentration of 1:10,000. However, routine use of iv adrenaline is not recommended unless the healthcare provider is skilled and experienced in its use.
Hydrocortisone, even by an iv route, takes several hours to have an effect and is no longer deemed to be part of emergency treatment of anaphylaxis. Therefore, it’s not an appropriate course of action for rapidly life-threatening situations.
In summary, administering adrenaline for anaphylaxis requires careful consideration of the dosage and route of administration. It’s crucial to act quickly and seek emergency medical attention to prevent fatal outcomes.
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This question is part of the following fields:
- Immunology/Allergy
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Question 50
Correct
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Which one of the following scenarios would not require immediate referral to the nearby breast service as per the guidelines of NICE?
Your Answer: 28-year-old female with a 8 week history of a new breast lump. Benign in nature on examination
Explanation:According to NICE guidelines, women who are 30 years or older should be referred urgently to the local breast services if they have an unexplained breast lump with or without pain. As the woman in question is 28 years old, she should be referred to the local breast services, but it is not urgent.
In 2015, NICE released guidelines for referring individuals suspected of having breast cancer. If a person is 30 years or older and has an unexplained breast lump with or without pain, or if they are 50 years or older and have discharge, retraction, or other concerning changes in one nipple only, they should be referred using a suspected cancer pathway referral for an appointment within two weeks. If a person has skin changes that suggest breast cancer or is 30 years or older with an unexplained lump in the axilla, a suspected cancer pathway referral should also be considered. For individuals under 30 years old with an unexplained breast lump with or without pain, non-urgent referral should be considered.
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This question is part of the following fields:
- Haematology/Oncology
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