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Critical limb ischemia — USMLE Step 3 MCQ

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HardSurgery (Post-operative / Follow-up)Critical limb ischemiaUSMLE Step 3

A 71-year-old man with diabetes has 2 weeks of rest pain and a nonhealing toe ulcer. The foot is cool with absent pedal pulses. Ankle-brachial index is 0.34 and there is no fever. Which of the following is the most appropriate next step in management?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: BUrgent vascular surgery evaluation for revascularization

Rest pain, tissue loss, and severely reduced ABI indicate chronic limb-threatening ischemia requiring urgent vascular assessment.

Reference: Current US clinical practice standards and USMLE Step 3 content outline, https://www.usmle.org/exam-resources/step-3-materials