Fig. 2

Examples of ablation points in partial antral ablation A anteroposterior, B posteroanterior, C right anterior-oblique and D left anterior-oblique view of three-dimensionally reconstructed image of left atrium. Ablation points are simultaneously displayed. In this patient, the left and right superior pulmonary vein (PV) did not exhibit a passively-activated segment. Therefore, a circumferential ablation at the PV antrum was performed. However, the left inferior and right inferior PVs exhibited passively-activated segments, and electrical isolation of the PVs was obtained only with a partial antral ablation (successful partial antral ablation). The red dots indicate a 30 W ablation. The green dots indicate a 25 W ablation. The blue dots indicate the isolation point