Vascular Disease USMLE Step 1 Practice Question
A 62-year-old man with hypertension and type 2 diabetes controlled on metformin and lisinopril presents with sudden-onset left leg pain and coldness. Vital signs: BP 158/92 mmHg, HR 98/min, RR 16/min, temp 37.2°C, SpO2 98% on room air. The left foot appears pale and mottled with absent femoral and popliteal pulses. Right lower extremity pulses are intact. Labs show elevated D-dimer at 2.1 mcg/mL. Which diagnosis best explains these findings?
Answer choices
- AAcute arterial thromboembolismCorrect answer
- BCellulitis with vasodilation
- CCompartment syndrome
- DDeep venous thrombosis
- ERaynaud's phenomenon
- FAcute myocardial infarction with cardiogenic shock
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