Marked conduction time prolongation observed during atrial tachycardia originating from a giant left atrial appendage

Kazuhisa Matsumoto; Daisuke Kawano; Hitoshi Mori; Yoshifumi Ikeda; Ritsushi Kato

doi:10.1002/joa3.13152

Marked conduction time prolongation observed during atrial tachycardia originating from a giant left atrial appendage

J Arrhythm. 2024 Oct 23;40(6):1494-1496. doi: 10.1002/joa3.13152. eCollection 2024 Dec.

Authors

Kazuhisa Matsumoto¹, Daisuke Kawano¹, Hitoshi Mori¹, Yoshifumi Ikeda¹, Ritsushi Kato¹

Affiliation

¹ Department of Cardiology Saitama Medical University, International Medical Center Hidaka Japan.

Abstract

We experienced a rare case of atrial flutter originating from the giant left appendage (LAA). The local potential of the ablation catheter presented with a rare finding, appearing up to 185 ms earlier than the surface P-wave in the distal LAA. With thoracoscopic LAA clipping, tachycardia was successfully controlled.

Keywords: atrial tachycardia; catheter ablation; conduction delay; giant left atrial appendage.