左后分支型宽QRS波心动过速临床特征及药物治疗分析

目的探讨左后分支型宽QRS波心动过速的临床特征及对药物治疗的反应。方法收集14例体表心电图呈左后分支型宽QRS波心动过速患者的临床资料,包括病史、心电图特征、电生理检查结果及其对抗心律失常药物治疗的反应。结果 14例发作时胸导联QRS均呈右束支阻滞图形,电轴均左偏或指向无人区。其中13例经电生理检查或心电图确诊为室速,1例不能确定为室速或室上速;12例曾接受维拉帕米治疗,均能成功终止发作。结论急诊终止左后分支型宽QRS波心动过速发作可首选维拉帕米治疗。

Clinical characteristics of left posterior fascicular type wide QRS tachycardia and drug therapy analysis

Objective To investigate clinical characteristics of left posterior fascicular type wide QRS complex tachycardia and the response of the patients to drug therapy. Methods The clinical data of 14 cases with left posterior fascicular type wide QRS complex tachycardia were collected and analyzed,including case history,surface ECG features,electrophysiological findings and responses to antiarrhythmic drug. Results 14 patients showed episodes of right bundle branch block QRS pattern in chest leads of ECG with axis pointing to left side or to no man＇s land,out of them,13 patients were finally diagnosed to have ventricular tachycardia by electrophysiological examination or ECG and 1 case was failed in confirming to have whether ventricular or supraventricular tachycardia;verapamil therapy was performed on 12 patients and the attacks were successfully terminated. Conclusions Verapamil therapy is the first-choice for the emergent termination of left posterior fascicular type wide QRS complex tachycardia.