射频消融治疗频发单源性室性期前收缩（附三例报告）

采用起搏标测法对３例有明显症状的频发单源性室性期前收缩（下称室早）患者进行射频导管消融（ＲＦＣＡ）治疗。经标测２例定位于右室流出道、１例定位于左室间隔。以３０～４０Ｗ的功率消融，持续时间３０～６０ｓ，获得成功。术后５～７ｄ复查动态心电图未发现室早。随访１～１１个月，２例未复发，１例出现偶发室早。认为对有明显临床症状且药物难以奏效或不能耐受其副作用的单源性室早患者，可考虑ＲＦＣＡ治疗。该疗法有可能成为根治室早的有效方法

Radiofrequency Catheter Ablation of Frequent Monomorphic Premature Ventricular Constrictions: A Report of Three Cases

Three patients with obviously symptomatic,frequent monomorphic premature ventricular constrictions (PVCs) underwent radiofrequency catheter ablation (RFCA) of PVCs.The target sites for ablation were on the outflow tract of right ventricle in two cases and on the septum of left ventricle in one case.Radiofrequency energy (30 to 40 W) was delivered to the target sites through the ablation catheter for 30 to 60 seconds.Ablation were successful in all cases.PVCs were not found by dynamic electrocardiography 5 to 7 days after ablation.No PVCs occured in 2 patients and unfrequent PVCs occured in 1 patient during 1 to 11 months of following up.In conclusion,RFCA can be performed in the patients with obviously symptomatic,drug refractory (or unpatientable side effect),frequent monomorphic PVCs.Probably,RFCA will become a effective method for the radical cure of frequent PVCs.