Palpitations in Medicine / Internal Medicine — 40yo Man | Cardiology | SMLE Q#11442
SMLE Question #11442
Medicine / Internal Medicine
Cardiology
Objective: OBJ-163
Last updated: February 2026
A 40-year-old man presents with palpitations for 4 hours and a similar episode 1 month ago. ECG shows atrial fibrillation, and he converts spontaneously to sinus rhythm after observation. He has known dilated cardiomyopathy with left ventricular ejection fraction 30% on recent echocardiography. He remains symptomatic during episodes and prefers a rhythm-control strategy. Which drug is most appropriate for long-term maintenance of sinus rhythm?
Continue in practice mode
Sign in and start a focused practice session to view options, submit your answer, and read the full explanation.