完全性左束支传导阻滞合并左室肥厚的心电图分析

Electrocardiogram of Complete Left Bundle Branch Block Combined With Left Ventricular Hypertrophy

目的:探讨完全性左束支传导阻滞合并左心室肥厚的心电图改变。方法:对27例经超声心动图(UCG)和/或X线心脏检查,对ECG的RV5(V6)+SV1(V2)、Rx+Sz、空间QRS向量、QRS时间、额面QRS电轴等测量分析。结果:证实有LVH者12例,分为甲组;无LVH者12例,乙组;3例双侧心室肥厚未予以分组。统计结果两组额面QRS电轴及QRS电压无显著性差异(P>0.05),QRS时间有极显著性差异(P<0.001)。结论:在CLBBB时,诊断LVH以QRS时间≥150 ms为标准,较额面QRS电轴及QRS电压指标敏感可靠。

Objective：To study the characteristics of electrocardiogram（ECG） of complete left bundle branch block（CLBBB） combined with left ventricular hypertrophy（LVH）.Methods：27 cases of CLBBB were examined by ultrasonic cardiogram and/or X-ray cardiac examination.All patients have received consecutive ECG recordings for studying RV5（V6）＋SV1（V2）、Rx＋Sz、spatial QRS vector、QRS time、and frontal plane QRS electrical axis.Results：12 cases with LVH were divided in the study group;12 cases only with CLBBB were divided in control group;the other 3 cases with left and right ventricular hypertrophy weren＇t divided in both groups.The statistical results showed that the patients of two group have no significance difference（P0.05） in frontal plane QRS electrical axis and QRS voltage,but have the extremely significance difference（P0.001） in QRS time.Conclusions：The QRS time（defined as QRS time≥150ms） is more sensitive index in LVH diagnosis of CLBBB patients than frontal plane QRS electrical axis and QRS voltage.