Study on radiofrequency catheter ablation below tricuspid valve in premature ventricular contraction originating from tricuspid annulus under Carto3 guidance
10.3760/cma.j.issn.1673-4904.2019.05.005
- VernacularTitle:Carto3标测下三尖瓣瓣下射频消融治疗三尖瓣环起源室性期前收缩的研究
- Author:
Mei LIANG
1
;
Yinglu HAO
;
Ming YANG
;
Hongyun CHEN
Author Information
1. 云南省玉溪市人民医院心内科 653100
- Keywords:
Ventricular premature complexes;
Catheter ablation;
Tricuspid annulus
- From:
Chinese Journal of Postgraduates of Medicine
2019;42(5):399-403
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the safety and clinical effect of radiofrequency catheter ablation below tricuspid valve using Carto3 system combined with SmartTouch contact force catheter in premature ventricular contraction (PVC) originating from tricuspid annulus. Methods The clinical data of 21 patients with PVC originating from tricuspid annulus from September 2016 to September 2018 were retrospectively analyzed. Radiofrequency catheter ablation below tricuspid valve was performed using Carto3 system combined with SmartTouch contact force catheter. Results The result of intraoperative mapping under Carto3 guidance showed that premature ventricular contraction in 12 cases originated from septal portion of the tricuspid annulus and in 9 cases originated from free wall of the tricuspid annulus. All patients′ ablation were successful, and no operative complications occurred. The patients were followed up for 1 to 23 months, and no recurrence occurred. However, there was 1 patient whose first radiofrequency ablation on the tricuspid valve was immediately successful, and PVC recurred 2 h after operation. Finally, radiofrequency ablation was performed successfully at 12 O′clock below the tricuspid valve 9 months later. Conclusions Radiofrequency catheter ablation below the tricuspid valve using carto3 guidance combined with SmartTouch contact force is safe in PVC originated from tricuspid annulus, and it can improve the success rate.
