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Question 1
Incorrect
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A 50-year-old woman visits her General Practitioner (GP) complaining of a painful sore inside her mouth that has been bothering her for the past week. The patient has a medical history of type 2 diabetes mellitus and takes metformin for it.
During the mouth examination, the GP observes an oval-shaped, shallow ulcer with a red rim around it. The ulcer is sensitive to touch, and no other lesions are visible. The patient does not have swollen lymph nodes and is in good health otherwise.
What is the most appropriate course of action for managing this patient's condition?Your Answer: EpsteinâBarr virus testing
Correct Answer: Topical steroids
Explanation:Management of Aphthous Ulcers: Topical Steroids and Pain Control
Aphthous ulcers are a common benign oral lesion that can be triggered by local trauma or certain foods. The first-line management for this condition typically involves topical steroids and topical lidocaine for pain control. Biopsy of the lesion is not indicated unless the ulcer is not healing after three weeks and malignancy needs to be excluded. Epstein-Barr virus testing is only necessary if there are signs of oral hairy leucoplakia. Immediate specialist referral is necessary if there are signs of malignancy. Oral steroids can be considered in refractory cases, but should be used cautiously in patients with diabetes mellitus.
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This question is part of the following fields:
- Gastroenterology
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Question 2
Incorrect
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A 62-year-old woman is being evaluated in the pre-operative clinic for an elective cholecystectomy. She has no other medical conditions except for two episodes of cholecystitis within the past year. Additionally, she has never undergone a blood transfusion before. What information should be included in the request to the blood bank?
Your Answer: Group and save as well as cross match
Correct Answer: Group and save only
Explanation:Blood Testing for Elective Surgeries
When it comes to elective surgeries, a group and save blood testing procedure is typically sufficient. This is a common practice in modern blood banks and involves determining the patient’s blood group and confirming it, as well as conducting an antibody screen. If the antibody screen test comes back positive, additional tests such as a cross match or direct Coombs’ test (also known as the direct antiglobulin test or DAT) may be necessary. However, these tests are not typically performed unless the patient has a recent history of blood transfusions or known red cell antibodies. Overall, the group and save method is a standard and effective way to ensure that patients have the appropriate blood type available in case of a transfusion during elective surgeries.
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This question is part of the following fields:
- Haematology
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Question 3
Incorrect
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A three-day-old baby who has not passed meconium is presenting with a distended abdomen and vomiting green bile. A congenital condition affecting the rectum is suspected. What test is considered diagnostic in this case?
Your Answer: Abdominal x-ray
Correct Answer: Rectal biopsy
Explanation:This infant is diagnosed with Hirschsprung’s disease, a congenital abnormality that results in the absence of ganglion cells in the myenteric and submucosal plexuses. This condition affects approximately 1 in 5000 births and is characterized by delayed passage of meconium (more than 2 days after birth), abdominal distension, and bilious vomiting. Treatment typically involves rectal washouts initially, followed by an anorectal pull-through procedure that involves removing the affected section of bowel and creating an anastomosis with the healthy colon.
Abdominal X-rays, abdominal ultrasounds, and contrast enemas may suggest the presence of Hirschsprung’s disease, as the affected section of bowel may appear narrow while other sections may be dilated. However, a rectal biopsy is necessary for a definitive diagnosis, as it allows for the analysis of tissue under a microscope to confirm the absence of ganglion cells.
Paediatric Gastrointestinal Disorders
Pyloric stenosis is more common in males and has a 5-10% chance of being inherited from parents. Symptoms include projectile vomiting at 4-6 weeks of life, and diagnosis is made through a test feed or ultrasound. Treatment involves a Ramstedt pyloromyotomy, either open or laparoscopic.
Acute appendicitis is uncommon in children under 3 years old, but when it does occur, it may present atypically. Mesenteric adenitis causes central abdominal pain and URTI, and is treated conservatively.
Intussusception occurs in infants aged 6-9 months and causes colicky pain, diarrhea, vomiting, a sausage-shaped mass, and red jelly stool. Treatment involves reduction with air insufflation.
Intestinal malrotation is characterized by a high caecum at the midline and may be complicated by the development of volvulus. Diagnosis is made through an upper GI contrast study and ultrasound, and treatment involves laparotomy or a Ladd’s procedure.
Hirschsprung’s disease occurs in 1/5000 births and is characterized by delayed passage of meconium and abdominal distension. Treatment involves rectal washouts and an anorectal pull through procedure.
Oesophageal atresia is associated with tracheo-oesophageal fistula and polyhydramnios, and may present with choking and cyanotic spells following aspiration. Meconium ileus is usually associated with cystic fibrosis and requires surgery to remove plugs. Biliary atresia causes jaundice and increased conjugated bilirubin, and requires an urgent Kasai procedure. Necrotising enterocolitis is more common in premature infants and is treated with total gut rest and TPN, with laparotomy required for perforations.
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This question is part of the following fields:
- Paediatrics
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Question 4
Correct
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A 27-year-old woman presents with a 3-day history of inability to use her right arm. She has been staying with her mother for the past 5 days after experiencing domestic abuse from her husband. The patient reports feeling very stressed. She denies any history of trauma. On examination, there is normal tone and reflexes but 0/5 power in all muscle groups of the right upper limb. The affected arm falls to the patient's side when held above her face and released. What is the probable diagnosis?
Your Answer: Conversion disorder
Explanation:The probable diagnosis for this patient is conversion disorder, which is a psychiatric condition that involves the loss of motor or sensory function and is often caused by stress. There is no evidence of neurological disease in the patient’s history or clinical findings. The condition is likely triggered by recent domestic abuse and stress. The patient also exhibits a positive drop-arm test, which is a controlled drop of the arm to prevent it from hitting the face, and is an unconscious manifestation of psychological stress.
Acute stress disorder is a condition that occurs after life-threatening experiences, such as abuse, and is characterized by symptoms of hyperarousal, re-experiencing of the traumatic event, avoidance of stimuli, and distress. However, it does not involve physical weakness. It typically lasts between 3 days and 1 month.
Post-traumatic stress disorder is another condition that occurs after life-threatening experiences, such as abuse, and has similar symptoms to acute stress disorder. However, it lasts longer than 1 month.
Patients with somatisation disorder have multiple bodily complaints that last for months to years and persistent anxiety about their symptoms. However, based on this patient’s history and physical findings, conversion disorder is the most likely diagnosis.
Given the patient’s normal tone and reflexes and the absence of trauma to the neck or spine, it is highly unlikely that a spinal cord lesion is causing total arm paralysis.
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 5
Correct
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A new father who is 5 weeks post-partum comes in for a check-up. He has noticed a warm, red tender patch on his left breast just lateral to the areola. This has been worsening over the past four days and feeding is now painful. He saw the midwife yesterday who assisted with positioning but there has been no improvement. Upon examination, he has mastitis of the left breast without visible abscess. What is the best course of action for management?
Your Answer: Flucloxacillin, continue Breastfeeding
Explanation:Breastfeeding Problems and Their Management
Breastfeeding is a natural process, but it can come with its own set of challenges. Some of the minor problems that breastfeeding mothers may encounter include frequent feeding, nipple pain, blocked ducts, and nipple candidiasis. These issues can be managed by seeking advice on proper positioning, trying breast massage, and using appropriate medication.
Mastitis is a more serious problem that affects around 1 in 10 breastfeeding women. It is characterized by symptoms such as fever, nipple fissure, and persistent pain. Treatment involves the use of antibiotics, such as flucloxacillin, for 10-14 days. Breastfeeding or expressing milk should continue during treatment to prevent complications such as breast abscess.
Breast engorgement is another common problem that causes breast pain in breastfeeding women. It occurs in the first few days after birth and affects both breasts. Hand expression of milk can help relieve the discomfort of engorgement. Raynaud’s disease of the nipple is a less common problem that causes nipple pain and blanching. Treatment involves minimizing exposure to cold, using heat packs, and avoiding caffeine and smoking.
If a breastfed baby loses more than 10% of their birth weight in the first week of life, it may be a sign of poor weight gain. This should prompt consideration of the above breastfeeding problems and an expert review of feeding. Monitoring of weight should continue until weight gain is satisfactory.
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This question is part of the following fields:
- Obstetrics
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Question 6
Incorrect
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Which type of cell is responsible for the production of stomach acid?
Your Answer: Chief cell
Correct Answer: Parietal cell
Explanation:Types of Cells Involved in Digestion
There are several types of cells involved in the process of digestion. One of these types is the APUD cells, which are endocrine cells that secrete hormones such as gastrin and cholecystokinin. These hormones play a crucial role in regulating the digestive system. Another type of cell involved in digestion is the chief cells, which produce pepsinogen to aid in the breakdown of food.
Kupffer cells are a specialized form of macrophage found in the liver. These cells play an important role in removing bacteria and other harmful substances from the blood. Finally, mucous cells produce mucous, which helps to protect the lining of the digestive tract from damage caused by stomach acid and other digestive enzymes.
Overall, these different types of cells work together to ensure that the digestive system functions properly. By producing hormones, enzymes, and protective substances, they help to break down food and absorb nutrients while also protecting the body from harmful substances.
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This question is part of the following fields:
- Clinical Sciences
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Question 7
Incorrect
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A 68-year-old woman visits her GP and complains of constant worrying, difficulty sleeping, and lack of focus on activities she used to enjoy. She is prescribed a new medication and referred for CBT. After a month, she returns to her GP feeling weak, lethargic, and experiencing muscle cramps. Her blood tests reveal the following results:
Sodium: 126 mmol/l (normal range: 135-145 mmol/l)
Potassium: 3.7 mmol/l (normal range: 3.5-5.0 mmol/l)
Creatinine: 95 ”mol/l (normal range: 68-98 ”mol/l)
Calcium: 2.40 mmol/l (normal range: 2.05-2.60 mmol/l)
Phosphate: 1.41 mmol/l (normal range: 0.8-1.50 mmol/l)
Which medication is most likely responsible for her symptoms?Your Answer: Zopiclone
Correct Answer: Sertraline
Explanation:Common Anxiety Medications and their Side Effects
Anxiety disorders are commonly treated with medication, and there are several options available. The first-line pharmacological treatment for anxiety is selective serotonin reuptake inhibitors (SSRIs) such as sertraline, paroxetine, or escitalopram. Alternatively, serotonin and norepinephrine reuptake inhibitors (SNRIs) like venlafaxine or duloxetine may be used. However, it is important to note that SSRIs can cause hyponatraemia, particularly in the elderly.
Diazepam is another medication used to treat anxiety, but it is not known to cause hyponatraemia. Its main side-effects are drowsiness and decreased concentration.
Pregabalin may be used if SSRIs or SNRIs are contraindicated or cannot be tolerated. It is not known to cause hyponatraemia.
Propranolol is a medication commonly used to treat high blood pressure, but it can also be used to treat anxiety. Its main side-effects are dizziness, fatigue, cold peripheries, insomnia, and nightmares. However, hyponatraemia is not a known side-effect of propranolol.
Finally, zopiclone may be prescribed for insomnia, but it is usually a short-term prescription and not given for more than four weeks due to the risk of withdrawal symptoms and tolerance. It is not known to cause hyponatraemia.
In summary, while there are several medications available to treat anxiety, it is important to be aware of their potential side-effects and to discuss any concerns with a healthcare provider.
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This question is part of the following fields:
- Psychiatry
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Question 8
Correct
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A 45-year-old male with a medical history of ulcerative colitis and gout presents to the emergency department with a sore throat and coughing up green sputum for the past three days. He reports pain when breathing in and has never had a chest infection before. He is currently in remission for an acute flare of ulcerative colitis and is taking azathioprine. One month ago, he started a medication for his gout, but he cannot recall the name and did not bring it with him.
Upon examination, bibasal crepitations and increased vocal fremitus are noted at the bases of his chest. His throat is erythematosus with exudate around the tonsils. He has a fever of 38.9ÂșC, a heart rate of 97/min, and a respiratory rate of 24/min. Blood tests reveal low levels of white blood cells and a high CRP. A chest x-ray shows bibasal consolidation.
Based on his clinical presentation and medication history, you suspect that the medication started for his gout has interacted with his azathioprine, leading to agranulocytosis. What is the most likely medication that he started for his gout?Your Answer: Allopurinol
Explanation:The interaction between azathioprine and allopurinol can lead to severe bone marrow suppression. This can result in pancytopenia, which can allow for the development of tonsillitis/pharyngitis and community acquired pneumonia due to low white blood cells. Allopurinol is a xanthine oxidase inhibitor that metabolizes 6-mercaptopurine, reducing the amount of inactivated 6-mercaptopurine (active form of azathioprine). This leads to more active 6-mercaptopurine being incorporated into the DNA in bone marrow precursors, reducing the production of platelet cell lines and red and white blood cell lines. Non-steroidal anti-inflammatory medications such as colchicine, diclofenac, and naproxen do not cause bone marrow suppression and are therefore incorrect answers.
Azathioprine is a medication that is broken down into mercaptopurine, which is an active compound that inhibits the production of purine. To determine if someone is at risk for azathioprine toxicity, a test for thiopurine methyltransferase (TPMT) may be necessary. Adverse effects of this medication include bone marrow depression, which can be detected through a full blood count if there are signs of infection or bleeding, as well as nausea, vomiting, pancreatitis, and an increased risk of non-melanoma skin cancer. It is important to note that there is a significant interaction between azathioprine and allopurinol, so lower doses of azathioprine should be used in conjunction with allopurinol. Despite these potential side effects, azathioprine is generally considered safe to use during pregnancy.
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This question is part of the following fields:
- Musculoskeletal
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Question 9
Correct
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A 16-year-old boy comes to his GP complaining of lower back pain that has been bothering him for the past 3 months, particularly in the mornings. An x-ray of his lumbar spine reveals sacroiliitis, but no other joints are affected. What is the best initial course of action while waiting for a referral to rheumatology?
Your Answer: Physiotherapy and non-steroidal anti-inflammatories (NSAIDs)
Explanation:The initial management for ankylosing spondylitis (AS) involves exercise regimes and NSAIDs. Intra articular steroids are not the primary treatment for AS, but may be considered by a rheumatologist if sacroiliitis is advanced or unresponsive to first-line therapies. DMARDs are not suitable for first-line treatment of AS and are typically used for other rheumatological conditions or when there is peripheral joint involvement in AS. The use of paracetamol and NSAIDs, or NSAIDs alone, is not effective in reducing back pain caused by AS.
Investigating and Managing Ankylosing Spondylitis
Ankylosing spondylitis is a type of spondyloarthropathy that is associated with HLA-B27. It is more commonly seen in males aged 20-30 years old. Inflammatory markers such as ESR and CRP are usually elevated, but normal levels do not necessarily rule out ankylosing spondylitis. HLA-B27 is not a reliable diagnostic tool as it can also be positive in normal individuals. The most effective way to diagnose ankylosing spondylitis is through a plain x-ray of the sacroiliac joints. However, if the x-ray is negative but suspicion for AS remains high, an MRI can be obtained to confirm the diagnosis.
Management of ankylosing spondylitis involves regular exercise, such as swimming, and the use of NSAIDs as the first-line treatment. Physiotherapy can also be helpful. Disease-modifying drugs used for rheumatoid arthritis, such as sulphasalazine, are only useful if there is peripheral joint involvement. Anti-TNF therapy, such as etanercept and adalimumab, should be given to patients with persistently high disease activity despite conventional treatments, according to the 2010 EULAR guidelines. Ongoing research is being conducted to determine whether anti-TNF therapies should be used earlier in the course of the disease. Spirometry may show a restrictive defect due to a combination of pulmonary fibrosis, kyphosis, and ankylosis of the costovertebral joints.
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This question is part of the following fields:
- Musculoskeletal
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Question 10
Incorrect
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A 65-year-old man presents to the Emergency Department after several episodes of vomiting bright red blood. He has presented to the same hospital in the past for spontaneous bacterial peritonitis, alcohol intoxication and peptic ulcer disease (PUD). The gastroenterology team review the patient and perform an urgent gastroscopy, which reveals several oesophageal varices.
Which of the following medications should be prescribed to this patient to reduce his chance of future variceal bleeding?Your Answer: Omeprazole
Correct Answer: Propranolol
Explanation:Medications for Alcoholic Liver Disease and Variceal Bleeding Prophylaxis
Secondary prophylaxis for variceal haemorrhage in patients with alcoholic liver disease involves the use of non-specific beta-blockers like nadolol and propranolol. These medications reduce portal inflow and prevent further episodes of variceal bleeding. However, it is important to initiate treatment at the lowest possible dose and monitor for complications such as bradycardia.
Omeprazole, a proton pump inhibitor commonly used for reflux and PUD, is not indicated for the management of variceal bleeding. Erythromycin, a macrolide antibiotic with prokinetic properties, has no role in secondary prophylaxis for variceal bleeding.
Atenolol, a cardioselective beta-blocker, is not the preferred choice for patients with oesophageal varices as it has limited effect on peripheral tissues. Instead, a non-selective beta-blocker is more appropriate.
H2 antagonists like ranitidine and cimetidine can be used as alternatives to proton pump inhibitors in some patients with reflux and PUD.
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This question is part of the following fields:
- Gastroenterology
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