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Peripheral artery disease — USMLE Step 3 MCQ

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EasyAmbulatory Medicine / Primary CarePeripheral artery diseaseUSMLE Step 3

A 62-year-old man has exertional calf pain after walking two blocks that resolves within 5 minutes of rest. He has hypertension and smokes. Pedal pulses are diminished, and ankle-brachial index is 0.68. Which of the following is the most likely diagnosis?

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Correct answer: A — Peripheral artery disease

Exertional leg pain relieved by rest with a low ankle-brachial index is classic for peripheral artery disease.

Reference: ACC/AHA peripheral artery disease guideline; USMLE Step 3 sample question style