Unique feature of novel activation mapping to identify the successful ablation site of atrial tachycardia

A 49-year-old man was referred to our hospital for catheter ablation of atrial tachycardia (AT; cycle length (CL), 360ms). He previously underwent pulmonary vein isolation and cavotricuspid isthmus ablation for paroxysmal atrial fibrillation (AF). Conventional activation mapping with the high-density RhythmiaR mapping system (Boston Scientific, Marlborough, MA) revealed the following features: (a) activation breaking out at the inferior wall below the left inferior pulmonary vein in a centrifugal pattern (Supplementary Figure), (b) AF was observed inside the left pulmonary vein (LPV) (Figure A-1, a)).

Source: Heart Rhythm - December 28, 2020 Category: Cardiology Authors: Jun Kishihara, Hidehira Fukaya, Jun Oikawa, Junya Ako Source Type: research