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Question 1
Correct
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A 38-year-old man with cirrhosis of the liver and ascites presented with clinical deterioration. Diagnostic aspiration of the ascites fluid shows a raised neutrophil count in the ascites fluid.
Which of the following statements best fits this scenario?Your Answer: There is a high mortality and high recurrence rate
Explanation:Understanding Spontaneous Bacterial Peritonitis: Mortality, Prevention, and Treatment
Spontaneous bacterial peritonitis (SBP) is a serious complication of ascites, occurring in 8% of cirrhosis cases with ascites. This condition has a high mortality rate of 25% and recurs in 70% of patients within a year. While there is some evidence that secondary prevention with oral quinolones may decrease mortality in certain patient groups, it is not an indication for liver transplantation. The most common infecting organisms are enteric, such as Escherichia coli, Klebsiella, Streptococcus, and Enterococcus. While an ascitic tap can decrease discomfort, it cannot prevent recurrence. Understanding the mortality, prevention, and treatment options for SBP is crucial for managing this serious complication.
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This question is part of the following fields:
- Gastroenterology
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Question 2
Incorrect
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What is the most common characteristic of a patient with a deficiency in vitamin C?
Your Answer: Diarrhoea and delusions
Correct Answer: Perifollicular haemorrhages and hyperkeratosis
Explanation:Vitamin C Deficiency and its Symptoms
Vitamin C is primarily found in fruits and vegetables. When there is a deficiency of ascorbic acid, it can lead to a condition called scurvy. The symptoms of scurvy include inflamed and bleeding gums, impaired wound healing, and petechiae. Cutaneous findings such as follicular hyperkeratosis, perifollicular haemorrhages, ecchymoses, xerosis, leg oedema, poor wound healing, and bent or coiled body hairs are also common.
It is important to note that cheilosis and red tongue are more indicative of vitamin B12 or iron deficiency, while diarrhoea and delusions suggest vitamin B deficiency (pellagra). Ocular muscle palsy and dementia are more likely to be caused by thiamine deficiency or Wernicke’s encephalopathy.
Vitamin C deficiency is not uncommon among the elderly population, and it is crucial to be aware of the signs and symptoms to make a proper diagnosis. The diagnosis can be confirmed by measuring vitamin C concentrations in the white cell. By the symptoms and causes of vitamin C deficiency, individuals can take steps to prevent and treat this condition.
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This question is part of the following fields:
- Clinical Sciences
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Question 3
Incorrect
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You are assisting in the anaesthesia of an 80-year-old man for a plastics procedure. He is having a large basal cell carcinoma removed from his nose. He has a history of ischaemic heart disease, having had three stents placed 2 years ago. He is otherwise healthy and still able to walk to the shops. His preoperative electrocardiogram (ECG) showed sinus rhythm. During the procedure, his heart rate suddenly increases to 175 bpm with a narrow complex, and you cannot see P waves on the monitor. You are having difficulty obtaining a blood pressure reading but are able to palpate a radial pulse with a systolic pressure of 75 mmHg. The surgeons have been using lidocaine with adrenaline around the surgical site. What is the next best course of action?
Your Answer: 100% O2, Intralipid® as per guideline for local anaesthetic toxicity
Correct Answer: 100% O2, synchronised cardioversion, 150-J biphasic shock
Explanation:Treatment Options for a Patient with Narrow-Complex Tachycardia and Low Blood Pressure
When a patient with a history of ischaemic heart disease presents with a narrow-complex tachycardia and low blood pressure, it is likely that they have gone into fast atrial fibrillation. In this case, the first step in resuscitation should be a synchronised direct current (DC) cardioversion with a 150-J biphasic shock. Administering 100% oxygen, a 500 ml Hartmann bolus, and 0.5 mg metaraminol may help increase the patient’s blood pressure, but it does not address the underlying cause of their haemodynamic instability.
Amiodarone 300 mg stat is recommended for patients with narrow-complex tachycardia and haemodynamic instability. However, administering 10 mmol magnesium sulphate is not the first-line treatment for tachycardia unless the patient has torsades de pointes.
Lastly, administering Intralipid® as per guideline for local anaesthetic toxicity is unlikely to be the main source of the patient’s hypotension and does not address their narrow-complex tachycardia. Therefore, it is important to prioritize the synchronised cardioversion and amiodarone administration in this patient’s treatment plan.
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This question is part of the following fields:
- Cardiology
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Question 4
Incorrect
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A 21-year-old patient who began taking desogestrel 50 hours ago reaches out to you to report that she took her second dose of medication 15 hours behind schedule yesterday and engaged in unprotected sexual activity on the same day. What is the recommended course of action?
Your Answer: Avoid sexual intercourse or use barrier method for 48 hours and take the next pill at the normal time
Correct Answer: Organise for emergency contraception immediately
Explanation:Emergency contraception is necessary if unprotected sex occurred within 48 hours of restarting the POP after a missed pill. In this case, the patient missed her second pill by over 12 hours and is within the 48-hour window. A pregnancy test cannot provide reassurance the day after intercourse. It is important to take additional precautions and take the next pill at the normal time after a missed progesterone-only pill for 48 hours. If the missed pill is forgotten for 24 hours, taking two pills at once may be necessary, but in this instance, as the missed pill has already been taken, that suggestion is incorrect.
progesterone Only Pill: What to Do When You Miss a Pill
The progesterone only pill (POP) has simpler rules for missed pills compared to the combined oral contraceptive pill. It is important to note that the rules for the two types of pills should not be confused. The traditional POPs (Micronor, Noriday, Norgeston, Femulen) and Cerazette (desogestrel) have the following guidelines for missed pills:
– If the pill is less than 3 hours late, no action is required, and you can continue taking the pill as normal.
– If the pill is more than 3 hours late (i.e., more than 27 hours since the last pill was taken), action is needed.
– If the pill is less than 12 hours late, no action is required, and you can continue taking the pill as normal.
– If the pill is more than 12 hours late (i.e., more than 36 hours since the last pill was taken), action is needed. -
This question is part of the following fields:
- Gynaecology
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Question 5
Correct
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Which of the following is a competitive antagonist of aldosterone?
Your Answer: Spironolactone
Explanation:Diuretics: A Closer Look at Spironolactone
Diuretics are medications that promote the excretion of excess fluids and salts from the body. Spironolactone is a type of diuretic that works by blocking the action of aldosterone, a hormone that regulates the balance of sodium and potassium in the body. By inhibiting aldosterone, spironolactone promotes the excretion of sodium and water, while retaining potassium.
However, when used in combination with other medications such as ACE inhibitors or angiotensin receptor blockers, spironolactone can lead to hyperkalemia, a condition characterized by high levels of potassium in the blood. Therefore, it is important to monitor electrolyte levels when using spironolactone.
Other types of diuretics include amiloride, which inhibits epithelial sodium channels, bendroflumethiazide, which inhibits the thiazide-sensitive sodium chloride symporter, and furosemide, which promotes the loss of sodium via inhibition of the sodium-potassium-chloride symporter. Lithium, on the other hand, blocks the action of vasopressin, which can lead to nephrogenic diabetes insipidus in some patients.
In summary, spironolactone is a diuretic that works by blocking aldosterone and promoting the excretion of sodium and water while retaining potassium. However, it should be used with caution in combination with other medications and electrolyte levels should be monitored.
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This question is part of the following fields:
- Pharmacology
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Question 6
Incorrect
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A 14-year-old boy comes to the Emergency Department with a suddenly hot and swollen knee joint. The issue began approximately 24 hours ago. His temperature is currently 38.2°C and blood cultures have been collected and sent for testing. During the examination, the knee is extremely sensitive, and the pain is causing limited mobility. This patient has no significant medical history and this is his first occurrence of this type of problem.
What would be your next course of action?Your Answer: Intravenous (IV) antibiotics
Correct Answer: Aspirate knee joint and send for cell count, microscopy and culture
Explanation:Management of Acutely Hot and Swollen Knee Joint: Aspiration, Antibiotics, and Arthroscopy
Any patient presenting with an acutely hot and swollen joint should be treated as septic arthritis until proven otherwise. To diagnose and treat this condition early, the knee joint should be aspirated and the aspirate should be analyzed for white cells and microorganisms. IV antibiotics are necessary after the knee joint has been aspirated to increase the yield of the knee aspiration. Blood cultures have already been taken and further cultures are not required at this stage. An ultrasound scan of the knee may reveal increased joint fluid and swelling suggestive of infection or inflammation, but it will not confirm any infection. After the knee aspiration, if there was any pus, an arthroscopy and washout of the joint should be done to clear the joint of the infective fluid and protect the articular junction.
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This question is part of the following fields:
- Orthopaedics
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Question 7
Incorrect
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You are working in the emergency department when a patient with gross swelling of the tongue and lips following a bee-sting is brought in. The patient is haemodynamically compromised and showing signs of airway compromise, and you diagnose them with anaphylaxis. What is the correct life-saving treatment?
Your Answer: Adrenaline 1 mg IM
Correct Answer: Adrenaline 0.5mg IM
Explanation:Adrenaline Administration for Anaphylaxis: Dosage and Route
Anaphylaxis is a life-threatening condition that requires swift treatment with adrenaline. The recommended initial dose is 0.5mg injected intramuscularly in the upper outer thigh. If symptoms do not improve, additional 0.5mg doses can be given every 5 minutes as needed. It is important to seek senior support, including a specialist in airway management, for further management.
Supplementary treatment with IV hydrocortisone and chlorphenamine can be helpful, but they do not address the airway compromise associated with anaphylaxis. Patients with a history of anaphylaxis should carry an adrenaline auto-injector, such as the EpiPen, although two may be needed for optimal dosing.
Intravenous adrenaline at a dose of 1 mg is reserved for cardiac arrest. The dose of 0.1 mg IV is incorrect for anaphylaxis, and intravenous administration of 0.5mg may cause cardiac tachyarrhythmias and should only be given by a specialist. While a total dose of 1 mg may be needed, the starting dose for IM administration should be 0.5mg, repeated as necessary. Proper administration of adrenaline is crucial in the management of anaphylaxis.
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This question is part of the following fields:
- Pharmacology
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Question 8
Incorrect
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A 28-year-old man comes to the clinic complaining of intermittent sharp central chest pains over the past 48 hours. The pain worsens with exertion and when he lies down. He reports no difficulty breathing. The ECG reveals widespread ST elevation.
What is the most probable diagnosis?Your Answer: Ischaemic heart disease
Correct Answer: Pericarditis
Explanation:Distinguishing Pericarditis from Other Cardiac Conditions: A Clinical Overview
Pericarditis is a common cause of widespread ST elevation, characterized by chest pain that is often pleuritic and relieved by sitting forwards. Other symptoms include dry cough, dyspnoea, and flu-like symptoms, with the most important sign being pericardial rub. It can be caused by viral infections, post-MI, tuberculosis, or uraemia.
While pulmonary embolism may cause similar pleuritic pain, it would not result in the same ECG changes as pericarditis. Acute MI causes ST elevation in the affected coronary artery territory, with reciprocal ST depression. Hypertrophic cardiomyopathy presents with syncope or pre-syncope, and ECG changes consistent with left ventricular and septal hypertrophy. Ventricular aneurysm is another cause of ST elevation, but the clinical scenario and patient age align with a diagnosis of acute pericarditis.
In summary, recognizing the unique clinical presentation and ECG changes of pericarditis is crucial in distinguishing it from other cardiac conditions.
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This question is part of the following fields:
- Cardiology
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Question 9
Incorrect
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A three-week old boy is brought to the emergency department by ambulance after losing consciousness. His mother reports that he often appears short of breath and has a bluish tint to his skin while feeding, which she assumed was normal. Imaging reveals the presence of right ventricular hypertrophy, a ventricular septal defect, and a displaced aorta. Additional imaging is requested. Based on the probable diagnosis, what type of murmur would be anticipated in this infant?
Your Answer: Pansystolic murmur
Correct Answer: Ejection systolic murmur
Explanation:The correct answer is an ejection systolic murmur. Tetralogy of Fallot is characterized by cyanosis or collapse in the first month of life, hypercyanotic spells, and an ejection systolic murmur heard at the left sternal edge due to pulmonary stenosis. The other features include right ventricular hypertrophy, a ventricular septal defect, and an overriding aorta. A continuous machinery murmur is associated with a patent ductus arteriosus, while a diastolic decrescendo murmur is heard in aortic or pulmonary regurgitation. Finally, a mid-diastolic murmur with an opening click is heard in cases of mitral stenosis.
Understanding Tetralogy of Fallot
Tetralogy of Fallot (TOF) is a congenital heart disease that results from the anterior malalignment of the aorticopulmonary septum. It is the most common cause of cyanotic congenital heart disease, and it typically presents at around 1-2 months, although it may not be detected until the baby is 6 months old. The condition is characterized by four features, including ventricular septal defect (VSD), right ventricular hypertrophy, right ventricular outflow tract obstruction, and overriding aorta. The severity of the right ventricular outflow tract obstruction determines the degree of cyanosis and clinical severity.
Other features of TOF include cyanosis, which may cause episodic hypercyanotic ‘tet’ spells due to near occlusion of the right ventricular outflow tract. These spells are characterized by tachypnea and severe cyanosis that may occasionally result in loss of consciousness. They typically occur when an infant is upset, in pain, or has a fever, and they cause a right-to-left shunt. Additionally, TOF may cause an ejection systolic murmur due to pulmonary stenosis, and a right-sided aortic arch is seen in 25% of patients. Chest x-ray shows a ‘boot-shaped’ heart, while ECG shows right ventricular hypertrophy.
The management of TOF often involves surgical repair, which is usually undertaken in two parts. Cyanotic episodes may be helped by beta-blockers to reduce infundibular spasm. However, it is important to note that at birth, transposition of the great arteries is the more common lesion as patients with TOF generally present at around 1-2 months. Understanding the features and management of TOF is crucial for healthcare professionals to provide appropriate care and treatment for affected infants.
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This question is part of the following fields:
- Paediatrics
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Question 10
Incorrect
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A 4-week-old baby boy is brought to the Emergency Department with a two-week history of vomiting after every feed and then appearing very hungry afterwards. His weight has remained at 3.8 kg for the past two weeks, and for the past two days, the vomiting has become projectile. His birth weight was 3.2 kg. He is exclusively breastfed. A small mass can be palpated in the right upper quadrant of his abdomen.
What is the most likely diagnosis?Your Answer:
Correct Answer: Pyloric stenosis
Explanation:Pyloric stenosis is a condition where the pylorus becomes enlarged, typically affecting baby boys at around six weeks of age. Symptoms include projectile vomiting, dehydration, and poor weight gain. Diagnosis is confirmed through ultrasound, and treatment involves surgical pyloromyotomy, often done laparoscopically.
Cow’s milk protein allergy is an immune response to cow’s milk protein, with symptoms appearing immediately or hours after ingestion. Symptoms include rash, constipation, colic, diarrhea, or reflux, but not projectile vomiting or an abdominal mass. Treatment involves an exclusion diet, with breastfeeding mothers advised to avoid cow’s milk and take calcium and vitamin D supplements.
Gastroenteritis presents with diarrhea and vomiting, but not projectile vomiting or an abdominal mass. Rotavirus is a common cause, and babies can receive a vaccine at eight and twelve weeks.
Gastro-oesophageal reflux disease (GORD) may cause vomiting and poor weight gain, but not projectile vomiting or an abdominal mass. Treatment involves regular winding during feeds, smaller and more frequent feeds, and keeping the baby upright after feeds. Medication may be prescribed if these measures fail.
Volvulus is a twisting of the bowel resulting in acute obstruction and a distended abdomen. Symptoms have a shorter duration before the baby becomes very unwell.
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This question is part of the following fields:
- Paediatrics
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Question 11
Incorrect
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A 45-year-old male arrives at the Emergency department. During routine admission blood tests, it is discovered that his triglyceride level is 20 mmol/l (0.45-1.69). What medical conditions can be triggered by hypertriglyceridemia?
Your Answer:
Correct Answer: Acute pancreatitis
Explanation:Hypertriglyceridaemia and its Causes
Hypertriglyceridaemia is a condition characterized by high levels of triglycerides in the blood. This condition can lead to acute pancreatitis, which is a serious medical condition. The most common causes of hypertriglyceridaemia include obesity, excessive alcohol intake, hypothyroidism, insulin resistance, poorly controlled diabetes mellitus, and pregnancy. There are also familial causes of hypertriglyceridaemia, such as familial hypertriglyceridaemia and familial combined hyperlipidaemia.
It is important to treat persistent high triglycerides to reduce the risk of pancreatitis and cardiovascular events. Von Gierke’s disease is a genetic disorder that causes the inability to break down glycogen. It is important to identify the underlying cause of hypertriglyceridaemia and manage it accordingly to prevent serious complications. By the causes of hypertriglyceridaemia, healthcare professionals can provide appropriate treatment and management to their patients.
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This question is part of the following fields:
- Clinical Sciences
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Question 12
Incorrect
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Olivia is a 15-year-old girl presenting with abdominal pains. The abdominal pain was around her lower abdomen and is crampy in nature and occasionally radiates to her back. Her pain normally comes on approximately before the onset of her period. She also feels increasingly fatigued during this period. No abdominal pains were noted outside of this menstrual period. Olivia has no significant medical history. She denies any recent changes in her diet or bowel habits. She has not experienced any recent weight loss or rectal bleeding. She denies any family history of inflammatory bowel disease or colon cancer. Given the likely diagnosis, what is the likely 1st line treatment?
Your Answer:
Correct Answer: Mefenamic acid
Explanation:Primary dysmenorrhoea is likely the cause of the patient’s abdominal pain, as it occurs around the time of her menstrual cycle and there are no other accompanying symptoms. Since the patient is not sexually active and has no risk factors, a pelvic ultrasound may not be necessary to diagnose primary dysmenorrhoea. The first line of treatment for this condition is NSAIDs, such as mefenamic acid, ibuprofen, or naproxen, which work by reducing the amount of prostaglandins in the body and thereby reducing the severity of pain.
Dysmenorrhoea is a condition where women experience excessive pain during their menstrual period. There are two types of dysmenorrhoea: primary and secondary. Primary dysmenorrhoea affects up to 50% of menstruating women and is not caused by any underlying pelvic pathology. It usually appears within 1-2 years of the menarche and is thought to be partially caused by excessive endometrial prostaglandin production. Symptoms include suprapubic cramping pains that may radiate to the back or down the thigh, and pain typically starts just before or within a few hours of the period starting. NSAIDs such as mefenamic acid and ibuprofen are effective in up to 80% of women, and combined oral contraceptive pills are used second line for management.
Secondary dysmenorrhoea, on the other hand, typically develops many years after the menarche and is caused by an underlying pathology. The pain usually starts 3-4 days before the onset of the period. Causes of secondary dysmenorrhoea include endometriosis, adenomyosis, pelvic inflammatory disease, intrauterine devices, and fibroids. Clinical Knowledge Summaries recommend referring all patients with secondary dysmenorrhoea to gynaecology for investigation. It is important to note that the intrauterine system (Mirena) may help dysmenorrhoea, but this only applies to normal copper coils.
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This question is part of the following fields:
- Gastroenterology
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Question 13
Incorrect
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What are the potential adverse effects of using recombinant human growth hormone (rhGH) therapy?
Your Answer:
Correct Answer: Idiopathic intracranial hypertension
Explanation:Side Effects of Recombinant Human Growth Hormone Therapy
Recombinant human growth hormone (RHGH) is a safer alternative to the old pituitary derived growth hormone (GH) as it is not associated with Creutzfeldt-Jakob disease (CJD). However, RHGH therapy has been linked to certain side effects. Patients undergoing RHGH therapy may experience headaches and idiopathic intracranial hypertension (IIH) due to fluid retention caused by the therapy. Additionally, RHGH therapy may lead to proliferative retinopathy in patients with diabetes and aplastic anemia in those with Paroxysmal nocturnal hemoglobinuria. It is important for patients to be aware of these potential side effects and to discuss any concerns with their healthcare provider.
Overall, while RHGH therapy is a beneficial treatment for growth hormone deficiency, it is important to monitor for potential side effects and adjust treatment as necessary. Proper communication between patients and healthcare providers can help ensure the best possible outcomes for patients undergoing RHGH therapy.
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This question is part of the following fields:
- Endocrinology
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Question 14
Incorrect
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A 52-year-old woman presents to her General Practitioner for recent onset of acute back pain. For the last three months, she has been having a burning sensation and tingling of the hands and feet. Her past medical history includes hypertension, diabetes, coronary artery disease and chronic obstructive pulmonary disease (COPD). She is on medication for her hypertension and diabetes which are well controlled. X-ray of thoracic vertebrae demonstrates punched-out lytic lesions.
Her laboratory investigation report shows the following abnormalities:
Investigations Results Normal values
Calcium 3.2 mmol/l 2.2–2.6 mmol/l
Blood urea nitrogen (BUN) 15 mmol/l 2.5–6.5 mmol/l
Creatinine 130 μmol/l 50–120 μmol/l
Haemoglobin 98 g/dl 115–155 g/l
What is the most appropriate next investigation in this patient?Your Answer:
Correct Answer: Urine analysis
Explanation:Diagnostic Tests for Peripheral Neuropathy in a Patient with Multiple Myeloma
Multiple myeloma is a neoplastic clonal expansion of plasma cells that produce monoclonal immunoglobulins. It can cause extensive skeletal damage by osteopenia and inducing osteolytic bone lesions. Peripheral neuropathy symptoms (both sensory and motor involvement can be seen) are present in this patient at the same time of the onset of bone pain. Here are some diagnostic tests that can help identify the cause of peripheral neuropathy in a patient with multiple myeloma:
24-hour urine electrophoresis test: This test could confirm the diagnosis of multiple myeloma through the identification of Bence-Jones protein, a characteristic finding in multiple myeloma.
Autoimmune antibodies: Autoimmune conditions like Sjögren syndrome, lupus and rheumatoid arthritis can give rise to symptoms of peripheral neuropathy. However, the patient’s history and clinical findings do not correlate with these conditions.
Glycosylated haemoglobin: Peripheral neuropathy is a complication of uncontrolled diabetes mellitus. However, given that it is well controlled in this patient, it is highly unlikely to be a cause of her symptoms.
Serum vitamin B12 estimation: Vitamin B12 deficiency causes peripheral neuropathy. However, it does not cause osteolytic lesions in the vertebrae, as in this patient’s case.
Thyroid function tests: Hypothyroidism, which is long-standing and often untreated, can lead to complications of peripheral neuropathy. However, hypercalcaemia found in this patient would go against this diagnosis and performing thyroid function tests would not be a correct option.
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This question is part of the following fields:
- Neurosurgery
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Question 15
Incorrect
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A 3-month-old infant is brought in with progressive noisy breathing that is particularly noticeable during feeding. The baby is below average in weight gain and has a poor appetite. What is the probable diagnosis?
Your Answer:
Correct Answer: Laryngomalacia
Explanation:The primary reason for stridor in infants is laryngomalacia, which is characterized by a soft epiglottis that collapses into the airway during inhalation. Although it typically resolves on its own, if the stridor worsens and causes respiratory distress or hinders feeding, surgery may be necessary to enhance the airway.
Stridor in Children: Causes and Symptoms
Stridor is a high-pitched, wheezing sound that occurs during breathing and is commonly seen in children. There are several causes of stridor in children, including croup, acute epiglottitis, inhaled foreign body, and laryngomalacia. Croup is a viral infection that affects the upper respiratory tract and is characterized by stridor, barking cough, fever, and coryzal symptoms. Acute epiglottitis is a rare but serious infection caused by Haemophilus influenzae type B, which can lead to airway obstruction. Inhaled foreign body can cause sudden onset of coughing, choking, vomiting, and stridor, depending on the site of impaction. Laryngomalacia is a congenital abnormality of the larynx that typically presents at 4 weeks of age with stridor.
It is important to recognize the symptoms of stridor in children and seek prompt medical attention, especially if the child appears unwell or toxic. Treatment may include medications, such as corticosteroids or nebulized epinephrine, or in severe cases, intubation or tracheostomy. Prevention measures, such as vaccination against Haemophilus influenzae type B, can also help reduce the incidence of acute epiglottitis. Overall, early recognition and management of stridor in children can help prevent complications and improve outcomes.
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This question is part of the following fields:
- Paediatrics
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Question 16
Incorrect
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A 28-year-old man is admitted after being found lying on the street with a reduced conscious level.
On examination, he has pinpoint pupils and needle-track marks on his arms.
What would be the most likely pattern on the arterial blood gas in this case?Your Answer:
Correct Answer: Hypercapnia and respiratory acidosis
Explanation:Understanding the Relationship between Hypercapnia and Acid-Base Imbalances
Opiate overdose can cause respiratory depression, leading to hypoventilation and subsequent hypercapnia. This results in respiratory acidosis, which can lead to coma and pinpoint pupils. The treatment for this condition is intravenous naloxone, with repeat dosing and infusion as necessary. It is important to note that hypercapnia always leads to an acidosis, not an alkalosis, and that hypocapnia would not cause a respiratory acidosis. Understanding the relationship between hypercapnia and acid-base imbalances is crucial in managing respiratory depression and related conditions.
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This question is part of the following fields:
- Acute Medicine And Intensive Care
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Question 17
Incorrect
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A 48-year-old man presents to the Emergency Department with chest tightness. His blood pressure is 200/105 mmHg and heart rate is 70 bpm. His femoral pulses cannot be felt. Echocardiography reveals cardiomegaly and a left-ventricular ejection fraction of 34%. The patient also has a N-terminal pro-brain natriuretic peptide (NT-proBNP) of 25,000 pg/mL. As a result of the patient’s hypertension and high levels of NT-proBNP, he undergoes coronary angiography to exclude cardiac ischaemia. There is no evidence of myocardial ischaemia, but there are significant arterial findings.
Which of the following is most likely to be seen on coronary angiography of this patient?Your Answer:
Correct Answer: Stenotic arteries
Explanation:Differentiating Arterial Conditions: Understanding the Symptoms and Causes
When it comes to arterial conditions, it is important to understand the symptoms and causes in order to make an accurate diagnosis. Here, we will explore several potential conditions and how they may present in a patient.
Stenotic Arteries:
Coarctation of the aorta is a potential condition to consider in younger adults with poorly controlled hypertension. Symptoms may include weak or absent femoral pulses, heart failure, and left-ventricular hypertrophy. Angiography may reveal stenosis in the middle and proximal segments of the left anterior descending artery, as well as in the left circumflex artery.Thickened Arteries:
Atherosclerosis, or the build-up of plaque in the arteries, is a risk factor for heart attacks and stroke. However, it is unlikely to explain persistently high blood pressure or an absent femoral pulse.Aortic Aneurysm:
While chronic high blood pressure can increase the risk of an aortic aneurysm, sudden, intense chest or back pain is a more common symptom. Additionally, a patient with an aneurysm would likely have low blood pressure and an elevated heart rate, which is inconsistent with the vitals seen in this presentation.Calcified Arteries:
Calcification of arteries is caused by elevated lipid content and increases with age. While it can increase the risk of heart attack and stroke, it would not explain the absence of a femoral pulse or extremely high blood pressure.Patent Foramen Ovale:
This condition, which predisposes patients to paradoxical emboli, is typically diagnosed on an echocardiogram and is unlikely to cause hypertension. It should be considered in patients who have had a stroke before the age of 50.In summary, understanding the symptoms and causes of arterial conditions is crucial for accurate diagnosis and treatment.
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This question is part of the following fields:
- Cardiology
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Question 18
Incorrect
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A young man seeks counselling because of marital discord. He and his wife have been having problems because he is uninterested in doing anything but playing video games. He has neglected his responsibilities at home and his work performance is beginning to suffer as well.
Which one of the following best describes his behaviour?Your Answer:
Correct Answer: Fixation
Explanation:Defense Mechanisms: Understanding Fixation, Dissociation, Sublimation, Reaction Formation, and Splitting
Defense mechanisms are psychological strategies that individuals use to cope with difficult situations or emotions. Here are some common defense mechanisms and their explanations:
Fixation: This occurs when a person becomes stuck in a particular stage of development and fails to progress. For example, someone who is fixated on football may prioritize it over other aspects of their life, leading to an imbalance.
Dissociation: This is a defense mechanism where a person temporarily disconnects from their thoughts, feelings, or memories to avoid distress. In extreme cases, dissociation can lead to dissociative identity disorder.
Sublimation: This is a mature defense mechanism where a person channels an unacceptable trait or desire into a socially acceptable behavior. For example, someone with aggressive tendencies may become a successful athlete.
Reaction Formation: This is an immature defense mechanism where a person represses unacceptable emotions and replaces them with their opposite. For instance, someone with repressed homosexual desires may become an outspoken advocate against homosexuality.
Splitting: This is a defense mechanism where a person sees others as either all good or all bad, unable to reconcile both positive and negative traits. For example, someone who experiences a bad breakup may only see their ex-partner as a terrible person, ignoring any positive qualities they may have had.
Understanding these defense mechanisms can help individuals recognize and address unhealthy patterns in their behavior and emotions.
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This question is part of the following fields:
- Psychiatry
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Question 19
Incorrect
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A 50-year-old male with schizophrenia is being evaluated by his psychiatrist. During the consultation, the psychiatrist observes that the patient appears disinterested and unresponsive when discussing recent and upcoming events in his life, such as his upcoming trip to Hawaii and his recent separation from his spouse.
What is the most appropriate term to describe the abnormality exhibited by the patient?Your Answer:
Correct Answer: Blunting of affect
Explanation:Emotional and Cognitive Symptoms in Mental Health
Blunting of affect is a condition where an individual experiences a loss of normal emotional expression towards events. This can be observed in people with schizophrenia, depression, and post-traumatic stress disorder. Anhedonia, on the other hand, is the inability to derive pleasure from activities that were once enjoyable. Depersonalisation is a feeling of detachment from oneself, where an individual may feel like they are not real. Labile affect is characterized by sudden and inappropriate changes in emotional expression. Lastly, thought blocking is a sudden interruption in the flow of thought.
These symptoms are commonly observed in individuals with mental health conditions and can significantly impact their daily lives. It is important to recognize and address these symptoms to provide appropriate treatment and support. By these symptoms, mental health professionals can better assess and diagnose their patients, leading to more effective treatment plans. Additionally, individuals experiencing these symptoms can seek help and support to manage their condition and improve their quality of life.
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This question is part of the following fields:
- Psychiatry
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Question 20
Incorrect
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You are called to attend a 35-year-old man who is in cardiac arrest on one of the wards. On arrival, the patient has defibrillator pads attached and someone is performing cardiopulmonary resuscitation (CPR). A rhythm strip displays ventricular fibrillation during a CPR pause.
What is the most appropriate management?Your Answer:
Correct Answer: Safely DC shock immediately
Explanation:Proper Steps for Responding to a Shockable Rhythm
When responding to a shockable rhythm, such as ventricular fibrillation, it is important to follow the proper steps to ensure the safety and effectiveness of the resuscitation efforts. The first step is to immediately deliver a safe direct current (DC) shock, followed by one round of CPR and another safe DC shock. It is not appropriate to give drugs at this stage.
After the second shock, continue CPR at a rate of 30 compressions to 2 breaths with interval checks. It is important to note that CPR is appropriate on both sides of the Advanced Life Support (ALS) algorithm initially, but once the pads are attached and the rhythm has been observed, the appropriate pathway should be followed.
Under no circumstances should resuscitation be stopped if a shockable rhythm is observed. Instead, adrenaline 1:1000 IV should be administered only after the appropriate steps have been taken and the patient’s condition has been reassessed. By following these steps, responders can increase the chances of a successful resuscitation and potentially save a life.
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This question is part of the following fields:
- Acute Medicine And Intensive Care
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Question 21
Incorrect
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A 42-year-old female undergoes a cervical smear at her local clinic as part of the UK cervical screening programme. Her result comes back as an 'inadequate sample'. What should be done next?
Your Answer:
Correct Answer: Repeat the test within 3 months
Explanation:If a cervical smear test performed as part of the NHS cervical screening programme is inadequate, it should be first tested for high-risk HPV (hrHPV) and then repeated within 3 months. Colposcopy should only be performed if the second sample also returns as inadequate. Returning the patient to normal recall would result in a delay of 3 years for a repeat smear test, which is not recommended as it could lead to a missed diagnosis of cervical cancer. Repeating the test in 1 month is too soon, while repeating it in 6 months is not in line with current guidelines.
The cervical cancer screening program has evolved to include HPV testing, which allows for further risk stratification. A negative hrHPV result means a return to normal recall, while a positive result requires cytological examination. Abnormal cytology results lead to colposcopy, while normal cytology results require a repeat test at 12 months. Inadequate samples require a repeat within 3 months, and two consecutive inadequate samples lead to colposcopy. Treatment for CIN typically involves LLETZ or cryotherapy. Individuals who have been treated for CIN should be invited for a test of cure repeat cervical sample 6 months after treatment.
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This question is part of the following fields:
- Gynaecology
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Question 22
Incorrect
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A 26-year-old female student presents to the Emergency Department with severe abdominal pain that started suddenly while she was shopping 3 hours ago. She reports not having her periods for 8 weeks and being sexually active. She also has a history of pelvic inflammatory disease 4 years ago. On examination, there is generalised guarding and signs of peritonism. An urgent ultrasound scan reveals free fluid in the pouch of Douglas with an empty uterine cavity, and a positive urine βhCG. Basic bloods are sent. Suddenly, her condition deteriorates, and her vital signs are BP 85/50 mmHg, HR 122/min, RR 20/min, and O2 saturation 94%.
What is the most appropriate next step?Your Answer:
Correct Answer: Resuscitate and arrange for emergency laparotomy
Explanation:There is a strong indication of a ruptured ectopic pregnancy based on the clinical presentation. The patient’s condition has deteriorated significantly, with symptoms of shock and a systolic blood pressure below 90 mmHg. Due to her unstable cardiovascular state, urgent consideration must be given to performing an emergency laparotomy.
Understanding Ectopic Pregnancy
Ectopic pregnancy occurs when a fertilized egg implants outside the uterus. This condition is characterized by lower abdominal pain and vaginal bleeding, typically occurring 6-8 weeks after the start of the last period. The pain is usually constant and may be felt on one side of the abdomen due to tubal spasm. Vaginal bleeding is usually less than a normal period and may be dark brown in color. Other symptoms may include shoulder tip pain, pain on defecation/urination, dizziness, fainting, or syncope. Breast tenderness may also be reported.
During examination, abdominal tenderness and cervical excitation may be observed. However, it is not recommended to examine for an adnexal mass due to the risk of rupturing the pregnancy. Instead, a pelvic examination to check for cervical excitation is recommended. In cases of pregnancy of unknown location, serum bHCG levels >1,500 may indicate an ectopic pregnancy. It is important to seek medical attention immediately if ectopic pregnancy is suspected as it can be life-threatening.
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This question is part of the following fields:
- Obstetrics
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Question 23
Incorrect
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A 32-week neonate is brought to the neonatal intensive care unit. The baby was delivered via emergency Caesarean section to a 17-year-old mother who had not received adequate antenatal care. The mother had a history of significant tobacco and alcohol use. During examination, it was observed that the baby had intestinal loops protruding through a hole on the left side of the umbilicus. What is the probable diagnosis?
Your Answer:
Correct Answer: Gastroschisis
Explanation:Socioeconomic deprivation, maternal alcohol/tobacco use, and maternal age under 20 are all associated with gastroschisis.
While gastroschisis and omphalocele have similar presentations, gastroschisis refers to a defect located to the side of the umbilicus, while omphalocele refers to a defect in the umbilicus itself.
Foetal alcohol syndrome is characterized by a small head, flattened philtrum, and thin upper lip.
Anencephaly is a neural tube defect that results in the absence of the brain, skull, and scalp.
Gastroschisis and exomphalos are both types of congenital visceral malformations. Gastroschisis refers to a defect in the anterior abdominal wall located just beside the umbilical cord. In contrast, exomphalos, also known as omphalocoele, involves the protrusion of abdominal contents through the anterior abdominal wall, which are covered by an amniotic sac formed by amniotic membrane and peritoneum.
When it comes to managing gastroschisis, vaginal delivery may be attempted, but newborns should be taken to the operating theatre as soon as possible after delivery, ideally within four hours. As for exomphalos, a caesarean section is recommended to reduce the risk of sac rupture. In cases where primary closure is difficult due to lack of space or high intra-abdominal pressure, a staged repair may be undertaken. This involves allowing the sac to granulate and epithelialise over several weeks or months, forming a shell. As the infant grows, the sac contents will eventually fit within the abdominal cavity, at which point the shell can be removed and the abdomen closed.
Overall, both gastroschisis and exomphalos require careful management to ensure the best possible outcome for the newborn. By understanding the differences between these two conditions and the appropriate steps to take, healthcare professionals can provide effective care and support to both the infant and their family.
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This question is part of the following fields:
- Paediatrics
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Question 24
Incorrect
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A pregnant woman at 39 weeks gestation with a history of type 2 diabetes begins to experience labor. An attempt is made for a vaginal delivery, but during the process, the baby's left shoulder becomes stuck despite gentle downward traction. Senior assistance is called and arrives promptly, performing an episiotomy. What is the appropriate course of action to manage this situation?
Your Answer:
Correct Answer: McRobert's manoeuvre
Explanation:Shoulder dystocia is more likely to occur in women with diabetes mellitus. However, using forceps during delivery to pull the baby out can increase the risk of injury to the baby and cause brachial plexus injury. Therefore, it is important to consider alternative delivery methods before resorting to forceps.
Shoulder dystocia is a complication that can occur during vaginal delivery when the body of the fetus cannot be delivered after the head has already been delivered. This is usually due to the anterior shoulder of the fetus becoming stuck on the mother’s pubic bone. Shoulder dystocia can cause harm to both the mother and the fetus. Risk factors for shoulder dystocia include fetal macrosomia, high maternal body mass index, diabetes mellitus, and prolonged labor.
If shoulder dystocia is identified, it is important to call for senior help immediately. The McRoberts’ maneuver is often performed, which involves flexing and abducting the mother’s hips to increase the angle of the pelvis and facilitate delivery. An episiotomy may be performed to provide better access for internal maneuvers, but it will not relieve the bony obstruction. Symphysiotomy and the Zavanelli maneuver are not recommended as they can cause significant maternal morbidity. Oxytocin administration is not indicated for shoulder dystocia.
Complications of shoulder dystocia can include postpartum hemorrhage and perineal tears for the mother, and brachial plexus injury and neonatal death for the fetus. It is important to manage shoulder dystocia promptly and appropriately to minimize the risk of these complications.
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This question is part of the following fields:
- Obstetrics
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Question 25
Incorrect
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A baby boy is born after 29 weeks gestation. On day three, a routine examination reveals a continuous mechanical murmur and bounding femoral pulses. Echocardiography confirms a haemodynamically significant, isolated patent ductus arteriosus (PDA). What should be the next step in managing this condition?
Your Answer:
Correct Answer: Medical management - cyclooxygenase inhibitor infusion
Explanation:Management of Patent Ductus Arteriosus
The ductus arteriosus is a fetal blood vessel that directs deoxygenated blood from the right ventricle directly into the descending aorta. After birth, the ductus should close within the first few days due to decreased prostaglandin levels and increased oxygen concentrations. Premature and low birth weight babies are at a higher risk of the ductus remaining open, which can lead to complications such as reduced blood supply to tissues, pressure overload of the pulmonary circulation, and volume overload of the systemic circulation.
The decision to intervene and close a patent ductus arteriosus (PDA) is based on the individual case and the severity of the condition. Medical management is usually the first step and involves administering a cyclooxygenase inhibitor to block prostaglandin synthesis and promote closure of the ductus. Conservative management may be an option for PDAs of little consequence, but even small PDAs pose long-term risks and may require intervention. Cardiac catheterisation is not appropriate in isolated PDA cases, and surgical management is reserved for those who fail medical management. Prostaglandin infusions may be used to keep the ductus patent in certain cardiac malformations that require a shunt for survival.
Overall, the management of PDA is crucial in preventing complications and ensuring proper blood flow. The decision to intervene should be made on a case-by-case basis, with medical management being the usual first step.
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This question is part of the following fields:
- Paediatrics
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Question 26
Incorrect
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What is the preferred intravenous induction agent for anesthesia in day case procedures?
Your Answer:
Correct Answer: Propofol
Explanation:Comparison of Different Anesthetic Agents
Propofol is a short-acting anesthetic agent with an elimination half-life of four hours. It is commonly used for day case procedures and sedation in intensive care units. On the other hand, etomidate is no longer preferred due to its side effects such as postoperative nausea and vomiting, venous thrombosis, and interference with glucocorticoid production. Ketamine, a phencyclidine derivative, can cause hallucinations and nightmares. Methohexitone may lead to involuntary muscular movement and epileptiform activity on an EEG. Lastly, thiopentone has the longest elimination half-life of 12 hours, which can cause a prolonged hangover effect.
In summary, different anesthetic agents have their own advantages and disadvantages. It is important to choose the appropriate agent based on the patient’s condition and the type of procedure being performed.
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This question is part of the following fields:
- Anaesthetics & ITU
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Question 27
Incorrect
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A 35-year-old woman presents at 12 weeks’ gestation to see the clinician. Her risk of developing Down syndrome was calculated as 1 in 8, and she was offered a diagnostic test. Amniocentesis confirms Down syndrome. Following long discussions with her and her partner, she decides on termination of the pregnancy.
Which of the following is the most appropriate management option for this patient?Your Answer:
Correct Answer: Oral mifepristone followed by vaginal misoprostol as an inpatient
Explanation:Medical and Surgical Management of Termination of Pregnancy
Medical and surgical management are two options for termination of pregnancy. Medical management involves the use of oral mifepristone followed by vaginal misoprostol. This method is recommended for termination of pregnancy before 13 weeks’ gestation and can be performed in an inpatient setting. The patient is administered the medication in hospital and will stay in the clinic or hospital to pass the pregnancy. Appropriate analgesia and antiemetics are given to take home, as required. The patient should be advised that there is a possibility medical management will fail and surgical management will need to take place.
Mifepristone is a competitive antagonist of progesterone for the progesterone receptor. It promotes degradation of the decidualised endometrium, cervical ripening and dilation, as well as increases the sensitivity of the myometrium to the effect of prostaglandins. Misoprostol, a synthetic prostaglandin E1, in turn, binds avidly to myometrial cells, promoting contraction of the uterus, and therefore expulsion of the products of conception. If this fails to empty the uterus, then a surgical procedure to manually evacuate the uterus is the next appropriate step in the patient’s management.
Surgical termination of pregnancy is first line for women presenting after 14 weeks’ gestation, women who have a preference over medical management and patients where medical termination has failed.
In cases where the patient has decided to proceed with termination of pregnancy, delaying the procedure is unethical and does not benefit the patient in any way. The patient should be fully informed of the risks associated with the procedure and given the necessary support.
Vaginal misoprostol can also be used in conjunction with mifepristone for medical termination of pregnancy or as monotherapy in medical management of miscarriage or induction of labour.
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This question is part of the following fields:
- Obstetrics
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Question 28
Incorrect
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A 42-year-old man comes to the Emergency Department complaining of intense left flank pain that extends to his groin. A urinalysis reveals the presence of blood in his urine. Based on these symptoms, you suspect that he may have a kidney stone. An ultrasound scan of the kidneys, ureters, and bladder (KUB) confirms the presence of a likely stone in his left ureter. What imaging technique is best suited for visualizing a renal stone in the ureter?
Your Answer:
Correct Answer: Non-contrast computed tomography (CT) KUB
Explanation:Imaging Tests for Urological Conditions
Non-contrast computed tomography (CT) KUB is recommended by the European Urology Association as a follow-up to initial ultrasound assessment for diagnosing stones, with a 99% identification rate. Micturating cystourethrogram is commonly used in children to diagnose vesicoureteral reflux. Magnetic resonance imaging (MRI) KUB is not beneficial for renal stone patients due to its high cost. Plain radiography KUB may be useful in monitoring patients with a radio-opaque calculus. Intravenous urography (IVU) is less superior to non-contrast CT scan due to the need for contrast medium injection and increased radiation dosage to the patient.
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This question is part of the following fields:
- Urology
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Question 29
Incorrect
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A geriatric patient develops a wound infection postoperatively on the abdominal wall. This is swabbed, and 2 days later, the following report is available:
Sample type: Pus from wound infection
Culture report: Significant Staphylococcal species
Sensitivities: Methicillin Sensitive
Ciprofloxacin Resistant
Tetracycline Resistant
Trimethoprim Resistant
Gentamicin Resistant
Which of the following would you commence?Your Answer:
Correct Answer: Flucloxacillin
Explanation:Antibiotic Options for Staphylococcal Infections: A Review
When it comes to treating staphylococcal infections, choosing the right antibiotic is crucial. Here, we review several options and their effectiveness against this type of bacteria.
Flucloxacillin is a great choice for staphylococcal infections, as it has excellent activity against this type of bacteria. However, ciprofloxacin is not recommended, as staphylococci are typically resistant to it. Methicillin is the most effective option, but it is only used in the laboratory for testing antibiotic resistance. If the organism is resistant to methicillin, vancomycin may be necessary, but it is a broad-spectrum intravenous antibiotic that requires monitoring. Finally, trimethoprim is not a good choice for staphylococcal infections, as the bacteria are often resistant to it.
In summary, choosing the right antibiotic for staphylococcal infections requires careful consideration of the available options and the specific characteristics of the infective organism.
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This question is part of the following fields:
- Microbiology
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Question 30
Incorrect
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A middle aged male patient presents with jaundice and epigastric abdominal pain, he describes an intermittent history of similar pain over the past 3 months, however, this time it is much worse. He has markedly raised bilirubin and mildly deranged LFTs, with a predominantly obstructive picture. Other pertinent history includes mild alcohol use.
What is the most likely cause for his symptoms?Your Answer:
Correct Answer: Gallstones
Explanation:Possible Causes of Obstructive Jaundice: A Case Analysis
The patient’s symptoms suggest that the most probable cause of obstructive jaundice is gallstones lodged in the common bile duct. Recurrent episodes of biliary colic and/or cholecystitis may have caused the intermittent abdominal pain, which has now worsened and led to hepatic obstruction. Cholecystitis, inflammation of the gallbladder due to gallstones, would not cause obstructive jaundice unless the gallstones leave the gallbladder and become lodged in the common bile duct. Alcohol-induced pancreatitis is a common cause of acute pancreatitis in the UK, but it will not cause obstructive jaundice. Hepatitis C may cause cirrhosis and subsequently jaundice, but there is no evidence that the patient is an intravenous drug user. Pancreatic carcinoma, particularly if located in the head of the pancreas, can cause obstructive jaundice, but it is usually painless in origin. Courvoisier’s law states that a non-tender palpable gallbladder accompanied by painless jaundice is unlikely to be caused by gallstones.
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This question is part of the following fields:
- Gastroenterology
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