Clear Lung Fields in Medicine / Internal Medicine — 82yo Man | Cardiology | SMLE Q#2562
SMLE Question #2562
Medicine / Internal Medicine
Cardiology
Objective: OBJ-163
Last updated: February 2026
An 82-year-old man develops acute confusion and irritability over 1 day. Five days ago, he sustained a painful left thigh injury after a minor fall and has been largely bedbound since. Today, he became short of breath and less responsive. Examination shows tachypnea with clear lung fields and no focal neurologic deficits. ECG shows atrial fibrillation with rapid ventricular response. What is the most likely diagnosis?
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