Methods:
We conducted a retrospective study of all patients that underwent CA of typical AFl at our institution from 2011-2017. Our institutional protocol involved OAC for at least 6 weeks after successful AFL ablation, following which patients underwent a 24hr Holter recording. In the absence of atrial fibrillation (AF) or AFl, OAC was discontinued. In patients with a prior history of atrial fibrillation (AF) or heart failure (LV ejection fraction <50%), OAC was continued for 6 months’ post ablation and a Holter was obtained. If Holter monitoring at 6 months showed no evidence of AF/AFl, OAC was discontinued. During long term follow up, yearly Holter monitors were performed. OAC was restarted in patients who had a recurrence of AFl/AF during follow up. Primary outcome was rate of OAC discontinuation and occurrence of major adverse events (thromboembolic events, major bleeding).