Pulmonary vein (PV) triggers initiate atrial fibrillation (AF). The aim of this study was to compare the outcome of focal PV ablation versus targeted PV electrical isolation aided by multipolar catheter recordings in the coronary sinus (CS) and right atrium and magnetic electroanatomic mapping (MEAM) for drug-refractory AF.
Electrophysiology Section, Division of Cardiology, University of Pennsylvania Health System, Philadelphia, Pennsylvania 19104, USA. francis.marchlinski@uphs.upenn.edu