Circumferential pulmonary vein isolation guided by Carto-Merge and Lasso catheters for the treatment of atrial fibrillation
- VernacularTitle:联合应用磁共振扫描与三维电解剖标测系统图像融合技术及Lasso导管标测技术指导环肺静脉隔离治疗心房颤动
- Author:
Yawei XU
;
Kai TANG
;
Jian MA
- Publication Type:Journal Article
- Keywords:
Atrial fibrillation;
Catheter ablation;
Pulmonary vein;
Magnet resonance image;
Image processing,computer assisted;
Electrospatial mapping
- From:
Chinese Journal of Interventional Cardiology
1996;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the effect of circumferential pulmonary vein isolation(CPVI) guided by Carto-Merge and Lasso catheter for the treatment of atrial fibrillation(AF).Methods Fifty-six drug refractory patients(41 male) with paroxysmal AF were enrolled into this study with a mean age of(58.5?12.7) years.Ostia of pulmonary veins(PVs) were identified by Carto-Merge.Then circumferential pulmonary vein isolation was performed.The endpoint of ablation was abolishment or dissociation of the pulmonary vein potentials(PVPs).Results Mean distance between electroanatomic mapping points and MRI surfaces was(1.79?0.33) mm as a whole in this group.Abolishment or dissociation of PVPs was accomplished in 52 patients(92.9%) during the first procedure.After a mean(18.3?5.7) months of follow up,41 patients(73.2%) maintained sinus rhythm.Ten patients received a second ablation procedure,and 8 were free of atrial tachyarrhythmias after a mean(8.2?6.9) months of the second follow up.No PV stenosis was identified after ablation procedure.Conclusion Combination of Lasso catheters with Carto-Merge to guide the CPVI procedure can confirm the isolation of PVs and lower the incidence of PVs stenosis.
