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).