Effect of identification and treatment of early pulmonary vein re-connection on clinical results of atrial fibrillation ablation
- VernacularTitle:心房颤动消融术中肺静脉传导恢复的识别及再干预对疗效的影响
- Author:
Xinhua WANG
;
Xu LIU
;
Yumin SUN
- Publication Type:Journal Article
- Keywords:
Atrial fibrillation;
Pulmonary vein;
Catheter ablation
- From:
Chinese Journal of Interventional Cardiology
1996;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the prevalence of acute pulmonary vein(PV) conduction recovery during observation time after PV isolation for paroxysmal atrial fibrillation(AF),and to evaluate the impact of re-isolation treatment on clinical results.Methods Ninety cases with paroxysmal AF(51 males,mean age of 56.4 12.3 years) were randomized to 3 groups to undergo circumferential pulmonary vein isolation(CPVI).In group A there was no observation time post-ablation.In group B there was 30 minutes for observation time post-ablation and in group C,there was 60 minutes of observation time post-ablation.All PV re-conduction was re-isolated at the end of observation.ECG and Holter were performed to evaluate the clinical effectiveness of the ablation.Results All cases underwent the procedure successfully.The mean procedural time in group A was significantly shorter than in group B and group C,but there was no significant difference on fluoroscopic time and PV isolation time among the three groups.In group B,PV re-conduction occurred in 8 cases(25%) at 30 min post-isolation,in 10 cases(31.2%) at 60 min post-isolation for the left PVs,and in 6 cases(18.8%) at 30 min post-isolation for the right PVs.In group C,PV re-conduction occurred in 9 cases(30%) at 30 min post-isolation and in 11 cases(36.7%) at 60 min post-isolation for the left PVs;for the right PVs,re-connection occured in 7 cases(23.3%) at 30 min post-isolation and in 8 cases(26.7%) at 60 min post-isolation.During a mean follow-up of 6.7 2.3 months,17 cases(60.7%) in group A,27 cases(84.3%) in group B,and 26 cases(86.7%) in group C had no recurrence of atrial tachyarrhythmias,P=0.04.Conclusion The prevalence of acute PV conduction recovery was about 30% after PV isolation,which mostly occurred within 30 minutes after initial isolation.Re-isolation of recovered PV conduction may improve the success rate of ablation for paroxysmal AF.
