No Known Medical History in Medicine / Internal Medicine — 56yo Man | Cardiology | SMLE Q#18421
SMLE Question #18421
Medicine / Internal Medicine
Cardiology
Objective: OBJ-IM-CARD-AF-001
Last updated: February 2026
A 56-year-old man with no known medical history is found incidentally to have an irregularly irregular pulse during a pre-employment exam. He denies chest pain, dyspnea, syncope, or neurologic symptoms. ECG confirms atrial fibrillation without pre-excitation. Vital signs: T 36.8°C, BP 110/70 mmHg, HR 110/min (irregular), RR 16/min, SpO2 98% on room air. He is hemodynamically stable and has no heart failure signs. His CHA2DS2-VASc score is 0. What is the best treatment?
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