P2-113: Ablation of macro-reentrant and focal atrial arrhythmias in patients with congenital heart defects after surgery: The role of circumscribed areas with heterogeneous conduction

Abstract

In patients late after surgical repair of congenital heart disease (CHD), areas with abnormal electrophysiological properties may either serve as slow conducting pathways within a macro-reentrant circuit or may be the source of focal atrial tachycardia (FAT). The role of these abnormal areas during atrial tachycardia was evaluated prior to ablation.