CA-530-02 LOWER ABLATION INDEX IS REQUIRED FOR POST-ABLATION DENSE SCAR FORMATION AT THE LEFT ATRIAL POSTERIOR WALL REGIONS WITH MRI-LATE GADOLINIUM ENHANCEMENT

Abstract

Late gadolinium enhancement in magnetic resonance imaging (MRI-LGE) at the left atrial posterior wall (LAPW) is a surrogate of fibrotic remodeling and is often targeted in persistent atrial fibrillation (PrAF) ablation. It is unclear whether ablation efficacy differs between regions with and without LGE at the LAPW.