Free Questions and Answers for All Medical Students all over the World
Q- A 45-year-old man presents with epigastric pain that improves with eating. Endoscopy reveals a duodenal ulcer. Which organism is most commonly responsible for this condition? A- Campylobacter jejuni B- Clostridioides difficile C- Helicobacter pylori D- Vibrio cholerae Q- A 70-year-old man presents with progressive difficulty initiating urination and a weak urinary stream. Biopsy … Read more
Q- A 68-year-old man presents with fever, productive cough, and confusion. Blood pressure is 82/50 mmHg despite receiving 2 liters of IV fluids. What is the next best step in management? A- Administer intravenous norepinephrine B- Begin oral antibiotics C- Obtain chest CT scan D- Start furosemide Q- A 73-year-old man presents with urinary … Read more
Q- A patient treated with tacrolimus after kidney transplantation develops nephrotoxicity. What is the primary molecular mechanism of tacrolimus? A- Blocks IL-2 transcription by inhibiting calcineurin B- Inhibits dihydrofolate reductase C- Inhibits inosine monophosphate dehydrogenase D- Stimulates T-cell apoptosis directly Q- A patient with chronic angina is treated with ranolazine. What is the primary … Read more
Q- A drug that increases GABA activity in the central nervous system is prescribed for anxiety. Which class of drugs acts by increasing the frequency of chloride channel opening at the GABA-A receptor? A- Barbiturates B- Benzodiazepines C- Selective serotonin reuptake inhibitors D- Tricyclic antidepressants Q- A woman has heavy menstrual bleeding and prolonged … Read more
Q- A 59-year-old man presents with crushing chest pain for 1 hour. ECG shows ST elevation in the anterior leads. The hospital does not have a catheterization laboratory, and transfer would take 3 hours. What is the most appropriate next step? A- Administer fibrinolytic therapy B- Begin aspirin therapy only C- Start intravenous heparin and … Read more
Q- A patient with atrial fibrillation is treated with dofetilide. Which electrophysiologic effect explains the antiarrhythmic action of this drug? A- Decreased phase 0 depolarization B- Increased refractory period by potassium channel blockade C- Inhibition of calcium influx in AV node D- Sodium channel blockade during depolarization Q- A patient treated with acetazolamide develops … Read more