Nishizaki Kimitaka, Itoh Taihei, Kimura Masaomi, Tomita Hirofumi
Department of Cardiology Hirosaki University Graduate School of Medicine Hirosaki Japan.
J Arrhythm. 2021 Dec 2;38(1):157-159. doi: 10.1002/joa3.12664. eCollection 2022 Feb.
Focal atrial tachycardias (ATs) originating from the right atrial appendage (RAA) apex are refractory to catheter ablation and can cause tachycardia-induced cardiomyopathy. After unsuccessful catheter ablation of these ATs, their elimination sometimes requires atrial appendectomy for treatment of tachycardia-induced cardiomyopathy. This case demonstrates that contrast injection into the RAA apex using an external irrigation catheter can facilitate mapping of such ATs and may provide safe and effective ablation of their sources even in the RAA tip.
起源于右心耳（RAA）尖部的局灶性房性心动过速（ATs）对导管消融难治，且可导致心动过速性心肌病。在这些ATs导管消融失败后，有时需要进行心耳切除术来治疗心动过速性心肌病。本病例表明，使用外部冲洗导管向RAA尖部注射造影剂有助于此类ATs的标测，甚至在RAA尖端也可能提供安全有效的源头消融。
