Free Questions and Answers for All Medical Students all over the World
Q- A child has chronic diarrhea and failure to thrive. Stool is positive for fat. The sweat chloride test is elevated. Which mechanism explains the GI symptoms? A- Decreased pancreatic enzyme secretion B- Increased bile acid synthesis C- Increased gastric acid production D- Increased intestinal chloride secretion Q- A patient has progressive weakness and … Read more
Q- A 63-year-old woman with diabetes presents with fever, flank pain, and dysuria. CT scan shows gas within the renal parenchyma. What is the most likely diagnosis? A- Acute pyelonephritis B- Emphysematous pyelonephritis C- Renal abscess D- Xanthogranulomatous pyelonephritis Q- A 74-year-old woman presents with acute onset right-sided weakness and slurred speech that began … Read more
Q- A patient treated with a nonselective beta blocker develops hypoglycemia that is difficult to recognize. What explains the masking of hypoglycemia symptoms? A- Alpha receptor blockade B- Beta-1 receptor stimulation C- Beta-2 receptor blockade D- Muscarinic receptor blockade Q- A patient with hyperlipidemia is treated with cholestyramine. What is the primary mechanism by … Read more
Q- A 27-year-old woman presents with a painless thyroid nodule. Biopsy shows tumor cells forming follicles but without the nuclear features of papillary carcinoma. Capsular invasion is present. What is the most likely diagnosis? A- Anaplastic thyroid carcinoma B- Follicular thyroid carcinoma C- Medullary thyroid carcinoma D- Papillary thyroid carcinoma Q- A 50-year-old man … Read more
Q- A 32-year-old woman presents with fatigue and pruritus. Labs show elevated alkaline phosphatase and positive anti–mitochondrial antibodies. What is the most appropriate initial treatment? A- Azathioprine B- Prednisone C- Ursodeoxycholic acid D- Vitamin K Q- A 70-year-old hospitalized patient suddenly develops dyspnea and hypotension. CT angiography confirms a massive pulmonary embolism. What is … Read more
Q- A patient receiving trimethoprim-sulfamethoxazole develops megaloblastic anemia. Which mechanism explains this adverse effect? A- Folate metabolism inhibition B- Hemoglobin oxidation C- Inhibition of erythropoietin synthesis D- Vitamin B12 malabsorption Q- A patient with hypertension is treated with clonidine. What is the primary mechanism by which this drug lowers blood pressure? A- Alpha-1 receptor … Read more