Sudden Severe Right Leg in Surgery — 65yo Man | Vascular Surgery | SMLE Q#4632
SMLE Question #4632
Surgery
Vascular Surgery
Last updated: February 2026
A 65-year-old man with hypertension, type 2 diabetes, and peripheral arterial disease presents with sudden severe right leg pain for 3 hours. The right leg became cold and pale, and he is unable to move his toes. Examination shows a pale, cold limb below the knee with delayed capillary refill, severe pain with passive toe movement, reduced sensation over the foot, and absent dorsalis pedis and posterior tibial pulses. Acute limb ischemia is suspected, and urgent revascularization is being considered. Which investigation is most diagnostic for planning definitive management in this patient?
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