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2007年和2008年,Verekei等分别[1,2]提出鉴别室速和室上速伴室内差异传导的新方法,其aVR单导联法[2]的准确率、敏感性及特异性均高于Brugada四步法。本节重点讨论如何根据aVR导联图形特征鉴别宽QRS波心动过速。步骤一:QRS波起始为R波。正常时,aVR导联QRS波多以Q波起始,形成Qs或Qr型。心室除极主体向量指向左下方(0°～90°),少数情况出现起始r波
In 2007 and 2008, Verekei et al [1, 2] proposed a new method to identify ventricular tachycardia and supraventricular tachycardia with differential conduction indoors. The accuracy, sensitivity and specificity of aVR single-lead method [2] Brugada four-step method. This section focuses on how to identify wide QRS tachycardia based on aVR lead pattern characteristics. Step one: QRS wave starting for the R wave. Normal, aVR lead QRS wave more Q waves start to form Qs or Qr type. Ventricular depolarization vector points to the lower left (0 ° ~ 90 °), a few cases of initial r wave