Vascular Disease USMLE Step 1 Practice Question
A 67-year-old man with type 2 diabetes and 40 pack-year smoking history presents with cramping left calf pain after walking two blocks, relieved by rest. Vital signs: BP 158/92 mmHg, HR 88, RR 16, SpO2 98% on room air. Dorsalis pedis and posterior tibial pulses are diminished bilaterally. Ankle-brachial index is 0.62. Notably, he reports no chest pain or dyspnea. He takes metformin and lisinopril. Which diagnosis best explains these findings?
Answer choices
- ADeep venous thrombosis
- BCompartment syndrome
- CPeripheral arterial disease due to atherosclerosisCorrect answer
- DChronic venous insufficiency
- EBuerger disease
- FLumbar spinal stenosis causing neurogenic claudication
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