中文摘要：

在传统的心电图诊断中aVR导联一直没有受到足够的重视,但是近几年的研究显示aVR导联在诸多方面都发挥着重要作用,尤其是在鉴别室性心动过速和室上性心动过速方面有着重要的作用,本文对此加以简述。

英文摘要：

Lead aVR has not drawn enough attention for years in traditional ECG diagnosis.However,recent research revealed important roles it plays in many fields,especially in the differential diagnosis of ventricular tachycardia（ VT） and supraventricular tachycardia（ SVT）.This paper briefly introduces the clinical value of lead aVR in the differential diagnosis of VT and SVT.