Catheter ablation of focal atrial tachycardia: the topographic distribution and long-term outcome
10.3760/cma.j.issn.0253-3758.2012.03.011
- VernacularTitle:射频消融局灶性房性心动过速患者的解剖分布及长期随访
- Author:
Ye XIA
1
;
Wei-Zhu JU
;
Ming-Long CHEN
;
Bing YANG
;
Feng-Xiang ZHANG
;
Hong-Wu CHEN
;
Yu-Min SUN
;
Xiao-Feng HOU
;
Chun CHEN
;
Jian-Gang ZOU
;
Qi-Jun SHAN
;
Ke-Jiang CAO
Author Information
1. 南京医科大学第一附属医院江苏省人民医院
- Keywords:
Tachycardia,ectopic atrial;
Electrophysiologic techniques,cardiac;
Catheter ablation;
Follow-up studies
- From:
Chinese Journal of Cardiology
2012;40(3):231-236
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the topographic distribution and long-term outcome of catheter ablation for focal atrial tachycardia (AT).Method The data of 207 patients who underwent electrophysiologic study for AT were retrospectively analyzed.Results A total of 200 AT were identified in 185 patients.The most common site for AT was ostium of the coronary sinus (23.8％ ),followed by crista terminalis (20.5％ ),perinodal area (20.0％ ),cava vena ( 17.8％ ),annulus ( 13.0％ ),and appendage ( 10.3％ ).Eighty percent AT originated from the fight atrium,17.8％ originated from the left atrium.AT originated from the left atrium was more common in male than in female (25.0％ vs.13.3％,P =0.042),while AT originated from the right atrium was more common in female than in male (69.4％ vs.86.7％,P =0.004).Among the 185 patients,acute success ablation rate was 93.5％ (n =173 ).The acute success rate in the conventional mapping group was lower than that in the three-dimensional mapping group (79.3％ vs.96.5％,P ＜0.01 ).During a median of 36 months follow up,the AT recurred in 20 patients ( success ablation rate 88.4％ ).Success ablation rate was similar between the conventional mapping group and the three-dimensional mapping group (P ＞ 0.05 ).Conclusions Focal AT commonly originates from ostium of coronary sinus,crystal terminalis,perinodal area,and cava veins.There is a gender related difference in the distribution of focal AT.The radiofrequency catheter ablation yields a satisfying success rate and very low complication rate and could be the first line choice for treating ATs in experienced electrophysiological center.
