不全性三分支阻滞不少见,但如同本例三支以传导速度、阻滞程度、传导比例的异同与不同步传导所构成的复杂图形实属少见,现报告如下: 患者男性,18岁,胸闷、头昏2天就诊。心电图示窦性心动过速,频率115次/min,室性逸搏心律,QRS波呈CLBBB图形,频率41次/min,为Ⅲ度AVB。 Incomplete tripartite block many see, but as in this case three to the conduction velocity, degree of retardation, conduction ratio of the same with and without the complex transmission of complex graphics is rare, are as follows: The patient male, 18 years old, Chest tightness, dizziness, 2 days treatment. Electrocardiogram showed sinus tachycardia, frequency 115 beats / min, ventricular escape rhythm, QRS wave was CLBBB pattern, the frequency of 41 beats / min, for the third degree AVB.