Repeated USMLE Questions Step 1- Review- 9

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Q- Which of the following explains the reason for the formation of atheroma at the bifurcations of arteries such as aorta and carotid?

A-Cholesterol breakdown

B- Endothelial dysfunction

C- Hypoxemia

D- Regular blood flow

B- Endothelial dysfunction- Blood flow is turbulent at these areas which allows initiating of atherogenesis through endothelial dysfunction and insudation of lipids.



Q- Which of the following findings distinguishes chronic renal failure from acute renal failure?

A- High serum calcium

B- High serum sodium

C- History of elevated BUN

D- History of elevated serum creatinine

D- History of elevated serum creatinine- A, B and C may occur in both acute and chronic renal failure but creatinine is specific for chronic renal failure



Q- Which one of the following anticonvulsant drugs in used only in the treatment of absence seizures?

A- Carbamazepine

B- Ethosuximide

C- Levetiracetam

D- Lorazepam

B- Ethosuximide- They occurs mainly in children and characterized by staring for a few seconds without loss of consciousness. Ethosuximide is the only treatment.



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2 thoughts on “Repeated USMLE Questions Step 1- Review- 9”

  1. I appreciate your comment Dr. Imam. Thank you so much

  2. Very educative especially for a students.

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