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完全性左束支传导阻滞(LBBB)是一种少见却具有重要临床意义的心电图异常,国内有关报道较少。我院自1973年1月至1983年4月所作心电图(留有资料的)共22,338份,诊断为LBBB者109例,占0.45%。现选取资料较完整者91例(住院患者36例,门诊患者55例),就其病因及心电图表现予以分析。LBBB诊断条件。①QRS间期≥0.12秒;②左室面导联为宽钝的R波,一般无q波,V_(1～3)为QS波。一般无r波或r波极小;
Complete left bundle branch block (LBBB) is a rare but significant clinical significance of ECG abnormalities, less domestic reports. A total of 22,338 electrocardiograms (with information) were made in our hospital from January 1973 to April 1983, 109 cases were diagnosed as LBBB, accounting for 0.45%. Now select the more complete data were 91 cases (36 inpatients, outpatients 55 cases), the etiology and ECG performance analysis. LBBB diagnostic conditions. ① QRS interval ≥ 0.12 seconds; ② left ventricular lead for the wide blunt R wave, generally without q wave, V_ (1 ~ 3) for the QS wave. Generally no r wave or r wave is very small;