Cardioversion from atrial fibrillation (AF) to sinus rhythm (SR) is performed primarily to improve patient symptoms. However, due to the intermittent nature of AF, patients may have converted to SR prior to elective cardioversion and the recurrence rate of AF after cardioversion can be high. The aims of this study are to assess the rate of spontaneously conversion to SR in patients with AF scheduled for elective cardioversion, as well as the rate of early recurrence of AF after elective cardioversion.