J Emerg Med
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The management of emergency department (ED) patients with presumed recent-onset atrial fibrillation or flutter≤48h in duration varies widely. ⋯ Our approach to ED patients with presumed recent-onset atrial fibrillation or flutter seems to be safe and effective, with a high rate of cardioversion and discharge to home coupled with a low ED adverse event and 30-day thromboembolic event rate.