左束支阻滞型心动过速的临床特点  

Clinical features of QRS complex duration≥0.12s with left bundle branch block morphology

作　　者：宋有城 欧阳非凡 朱俊 袁贤芳 李建冬 方卫华 

机构地区：[1]中国医学科学院阜外医院,100037

出　　处：《临床心电学杂志》1993年第1期16-20,共5页Journal of Clinical Electrocardiology

摘　　要：本文总结20例左束支阻滞(LBBB)型心动过速的临床特点。按病因可分三组:组Ⅰ9例,为原因不明的室性心动过速(VT);组Ⅱ8例,是器质性心脏病伴 LBBB 型 VT;组Ⅲ3例,系阵发性室上性心动过速。可见,LBBB型心动过速并非单一独立的临床实体。Twenty patients with monomorphic left bundle branch block(LBBB)and QRSduration≥0.12s tachycardia were evaluated.These patients were divided into three groups ac-cording to the etiology.Nine patients in group Ⅰ had no demonstrable heart disease by echocardio-graphy,chest roentyenogram and/or electrophysiologic study.Ventricular tachycardia in five pa-tients could be induced during exercise.Eight cases in group Ⅱ diagnosed as organic heart diseasehad LBBB morphologic ventricular tachycardia.Six of them had left ventricular enlargment anddysfunction by echocardiogram.One case in group Ⅱ with arrhythogenic right ventricular dyspla-sia demostrated right ventricular marked enlargment and hypokinetic(EF 12.8%).Three pa-tients in group Ⅲ had paroxysmal supraventricular tachycardia.Two cases of them had atrioven-tricular reentrant tachycardia.The third patient had paroxymal atrial tachycardia with LBBB.Itindicates that the tachycardia with LBBB morphology does not belong to a single clinical entity.

关 键 词：心动过速 电生理学 心电图 

分 类 号：R540.41[医药卫生—心血管疾病]