Comparison and effectiveness analysis of mapping ablation methods for Premature Ventricular Contraction originating from the pulmonary sinus

Ma Longfei; Song Hongxing; Wang Juntao; Lu Zhaohui

doi:10.3969/j.issn.1674-4055.2023.10.19

Abstract：Objective To compare the mapping and ablation methods for pulmonary sinus-derived ventricular premature beats(PVC)and their effectiveness.Methods A retrospective analysis was conducted on 131 patients who underwent catheter radiofrequency ablation for right ventricular outflow tract PVC(Premature Ventricular Contraction)in the Cardiology Department of the Seventh People's Hospital of Zhengzhou City from January 2021 to December 2021.Among them,66 cases were confirmed to originate from the pulmonary artery sinus during the surgery.These cases were divided into two groups based on intraoperative ablation catheter mapping and ablation technique:the traditional ablation group(n=30)and the inverted U-curve ablation group(n=36).The two groups were compared in terms of ablation target location,intraoperative ablation time,immediate success rate,and complication incidence.Result Inverted U curve ablation was performed in 36 patients with PVC(There are 18 cases origins from the left sinus,13 cases origins from right sinus,5 cases origins from anterior sinus of the inverted U-curve ablation group.There are 15 cases origin from the left sinus,8 cases origin from the right sinus,7 cases origin from anterior sinus of the traditional ablation group.The operation time of the inverted U ablation group was significantly shorter than that of the traditional ablation group(P<0.05).No surgery-related complications occurred during the operation.In the traditional ablation group,1 patient had pericardial tamponade during the operation,and 1 patient had recurrent PVC ablation after the operation.Conclusion For PVCS originating from pulmonary sinuses,inverted U ablation is safe and effective compared with traditional mapping ablation,and can significantly reduce the operation time.