Q- Which of the following is the main role of hydroxyurea in treatment of sickle cell anemia? A- Decrease levels of HbF in red blood cells B- Decrease oxygen affinity to HbS C- Increase levels of HbF in red blood cells D- Increase ability of HbS to bind 2.3-bisphosphoglycerate Q- Which of the following methods […]
repeated usmle questions
Pharmacology MCQs- 273
Q- A certain drug has a high serum protein binding. Which of the following is increased as a result of injecting this drug? A- Distribution of the drug B- Drug interaction C- Liver metabolism D- Renal excretion Q- Administration of spironolactone and furosemide leads to which of the following? A- Increase potassium loss B- Reduce […]
Repeated USMLE Questions Step 2 CK- 479
Q- A 61-year-old male represents to the ER with severe substernal chest pain. He’s given sublingual nitroglycerin and oxygen. His vital signs are within normal limits and ECG is normal. Which of the following is the best next step? A- Aspirin B- Coronary angiography C- Echocardiography D- Thallium stress test Q- Which of the following […]
Repeated USMLE Questions Step 1- 366
Q- Which of the following cell types is responsible for forming the blood brain barrier (BBB)? A- Astrocytes B- Microglia C- Oligodendrocytes D- Schwann cells Q- Which of the following esophageal disorders is the most likely a complication of HIV infection? A- Achalasia B- Adenocarcinoma C- Candida esophagitis D- Esophageal varices Q- Which of the […]
Pharmacology MCQs- 272
Q- A 400 mg dose of a drug was administered and 200 mg of it was eliminated after two hours. Which of the following is the amount of drug left after six hours if the drug follows first-order elimination kinetics? A- 0 mg B- 25 mg C- 50 mg D- 75 mg Q- Reflex bradycardia […]
Repeated USMLE Questions Step 2 CK- 478
Q- Which of the following is the initial treatment of asymptomatic aortic stenosis? A- Balloon valvuloplasty B- Furosemide C- Hydrochlorothiazide D- Valve replacement Q- Which of the following medications may cause acquired angioedema within days to weeks after starting it? A- Aspirin B- Benazepril C- Clopidogrel D- Propranolol Q- Which of the following is the […]