Clinical observation on effects of radiofrequency ablation on frequent ventricular premature beats originating from the right ventricular outflow tract / 重庆医科大学学报

ABSTRACT

Objective:To investigate effects and reliability of catheter radiofrequency ablation of frequent ventricular premature beats(VPBs) originating from the right ventricular outflow tract(RVOT).Methods:32 patients with frequent VPBs originating from RVOT were randomly divided into conventional mapping group(16 patients) and coronary sinus electrode mapping group(16 patients).They were ablated with conventional metheds.During follow-up 22?14 months,radiofrequency ablation short-term successful rate and long-term successful rate,reliability,and the clinical symptoms were recorded.Mapping duration was compared between conventional mapping group and coronary sinus electrode mapping group.Results:(1)Radiofrequency ablation short-term successful and long-term successful rate were 100%,93.8% respectively.No complications occurred.The clinical symptoms caused by VPBs disappeared after successful ablation.(2)Mapping duration of coronary sinus electrode mapping group was shorter than that of conventional mapping group.Conclusion:Successful rate and reliability of radiofrequency ablation of VPBs originating from RVOT were higher.Mapping duration was decreased by smart application of conventional catheter,in other words,X-ray radiation energy was decreased.