Safety of ablation for atrial fibrillation with therapeutic INR: comparison with transition to low-molecular-weight heparin.

Background: The ideal management of oral anticoagulation (OAC) before and after catheter ablation for atrial fibrillation (AF) is still controversial.

Objective: To compare two anticoagulation strategies for catheter ablation for AF: warfarin withholding and use of low-molecular-weight heparin (LMWH); and maintenance of warfarin and therapeutic INR (between 2.0 and 3.