Free Questions and Answers for All Medical Students all over the World
Q- Which of the following drugs is a reversible cholinesterase inhibitor used in the management of myasthenia gravis? A- Atropine B- Neostigmine C- Pralidoxime D- Succinylcholine Q- A patient with atrial fibrillation is prescribed warfarin. Which of the following factors will increase the anticoagulant effect of warfarin? A- Vitamin K deficiency B- Rifampin therapy … Read more
Q- A 62-year-old man with a history of chronic alcohol use presents with weight loss, epigastric pain, and jaundice. CT scan shows a mass in the head of pancreas. Which tumor marker is most useful for this diagnosis? A- Alpha-fetoprotein (AFP) B- Cancer antigen 19-9 (CA 19-9) C- Carcinoembryonic antigen (CEA) D- Prostate-specific antigen (PSA) … Read more
Q- A 25-year-old man is treated with chloramphenicol for typhoid fever. He later develops pallor, fatigue, and pancytopenia. Which adverse effect best explains this presentation? A- Dose-dependent reversible anemia B- Folate deficiency C- Irreversible aplastic anemia D- Vitamin B12 deficiency Q- A 60-year-old woman with hypertension is prescribed hydralazine. Which adverse effect is most … Read more
Q- A 55-year-old man presents with hematuria. Cystoscopy shows a papillary growth in the bladder. Histology reveals malignant transitional cells. Which of the following is the most significant risk factor for this condition? A- Chronic cystitis B- Cigarette smoking C- Cyclophosphamide therapy D- Schistosoma haematobium infection Q- A 65-year-old man presents with progressive dyspnea … Read more
Q- Topical benzocaine overuse can cause sudden cyanosis with normal PaO₂. Which one of the following substances can reverse this reaction? A- Atropine B- Methylene blue C- Naloxone D- Sodium bicarbonate Q- A 32-year-old woman with a history of migraines is prescribed sumatriptan. What is its mechanism of action? A- 5-HT1B/1D receptor agonist B- … Read more
Q- A 64-year-old man with atrial fibrillation is started on warfarin therapy. After 3 days, he develops skin necrosis. Which of the following best explains this complication? A- Direct inhibition of thrombin B- Immediate depletion of clotting factors II, VII, IX, X C- Rapid decline in protein C leading to transient hypercoagulability D- Vitamin K … Read more