Different strategies for the ablation of atrial tachycardia in the redo ablation of persistent atrial fibrillation
10.3969/j.issn.1004-8812.2017.08.005
- VernacularTitle:持续性心房颤动导管消融术后复发二尖瓣峡部心房扑动不同消融策略的比较
- Author:
Xueyuan GUO
;
Jianzeng DONG
;
Deyong LONG
;
Ronghui YU
;
Ribo TANG
;
Rong BAI
;
Nian LIU
;
Caihua SANG
;
Chenxi JIANG
;
Songnan LI
;
Changsheng MA
- Keywords:
Atrial fibrillation;
Catheter ablation;
Atrial tachycardia
- From:
Chinese Journal of Interventional Cardiology
2017;25(8):437-441
- CountryChina
- Language:Chinese
-
Abstract:
Objective The recurrence of perimitral atrial tachycardia is common after initial ablation of persistent atrial fibrillation (AF). The aim of the study is to explore a preferable ablation approach for perimitral atrial tachycardia in the redo ablation of persistent AF. Methods Seventy-four patients with perimitral atrial tachycardia after initial ablation for persistent AF were included in our study. Patients were distinguished into either the group of having ablation during tachycardia (Group A) or the group having ablation after cardioversion to sinus rhythm (Group B) according to the different ablation strategies. The procedural endpoints were pulmonary vein isolation and bidirectional conduction block of all the ablated lines. The primary endpoint of the study was freedom from atrial tachyarrhythmia recurrence during the follow-up period. Results There were statistical differences in baseline clinical data between the 2 groups. During the redo procedure, conduction recovery rate across the mitral isthmus (MI),cavotricuspid isthmus and left atial roofline were 100％, 40.5％ and 48.6％ respectively. The procedural time, fluoroscopy time, mapping time were longer in the patients of group A. During a mean follow-up of (16.9±6.3) months, 31 (72.1％) patients in group A and 21(67.7％) patients in group B maintained in sinus rhythm in the absence of antiarrhythmic durgs (P =0.771) . Conclusion In patients with perimitral atrial tachycardia after initial ablation for persistent AF,ablation in sinus rhythm is a more simplified method and as effective as ablation during tachycardia.
