Atrium-atrioventricular node block： an unusual complication during catheter ablation of persistent atrial fibrillation

Ablation of persistent atrial fibrillation is still a challenge for the ablationist. Extensive ablation is required under some conditions and could lead to some unintended complications. Here we report a case of atrium-atrioventricular node block complicating multiple catheter ablation procedures fo...

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Bibliographic Details
Published in:Chinese medical journal 2011-05, Vol.124 (10), p.1586-1587
Main Authors: Miao, Cheng-Long, Sang, Cai-Hua, Dong, Jian-Zeng, Ma, Chang-Sheng
Format: Article
Language:English
Subjects:
Aged
Atrial Fibrillation - therapy
Atrioventricular Block - diagnosis
Atrioventricular Block - etiology
Atrioventricular Node - pathology
Catheter Ablation - adverse effects
Humans
Male
导管
并发症
心房
房颤
持续性
消融过程
结块
肺静脉
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Summary:Ablation of persistent atrial fibrillation is still a challenge for the ablationist. Extensive ablation is required under some conditions and could lead to some unintended complications. Here we report a case of atrium-atrioventricular node block complicating multiple catheter ablation procedures for persistent atrial fibrillation. After extensive ablation, including circumferential pulmonary vein ablation, linear ablation at the left atrial roof, mitral isthmus, atrial septum, cavotricuspid isthmus, and complex fractionated atrial electrogram ablation, conduction obstacle was found, and sinus impulse could not travel from the right atrium, atrial septum and left atrium to atrioventricular node. The case indicated that intensive ablation at some key sites, especially the interatrial septum, should be careful during ablation of atrial fibrillation
ISSN:0366-6999
2542-5641
DOI:10.3760/cma.j.issn.0366-6999.2011.10.029