完全性右束支阻滞QRS平均电轴变化的临床意义

Clinical significance of QRS average electric axis changes with complete right bundle branch block

为探讨完全性右束支阻滞(CRBBB)患者心电轴改变的临床意义,分析184例CRBBB的QRS平均心电轴改变。结果显示:电轴正常以正常人多见,左偏以冠心病和高血压病多见,而风心病、肺心病及先心病主要为电轴右偏。认为CRBBB时,QRS平均电轴右偏>+110°、左偏<—30°有器质性心脏病的可能。

In order to investigate clinical significance of cardiac electric axis changes with complete right bundle branch block (CRBBB), this paper reported analysis of QRS average electric axis 6f 184 cases of CRBBB. Results revealed that normal cardiac electric axis was seen in normal subjects and left axis deviations were common in those with coronary heart diseases or hypertension, and right axis deviations mainly showed up in rheumatic heart disease, pulmonale or congenital heart dis-sease. We considered that vitium cardis might be implied when the right deviation > + 110°or left deviation <-30°of average electric axis of QRS wave with CRBBB.