一、心房颤动合并室内差异性传导与室性异位心搏:房颤时心室律极不规则,心动周期忽长忽短,容易形成长——短周期,故常可伴发室内差异性传导,出现畸形的QRS波。由于无P波,与室性异位搏动不易鉴别,但两者的鉴别又有重要的临床意义,这 First, atrial fibrillation combined with differential conduction and ventricular ectopic heart atrial fibrillation: atrial fibrillation very irregular ventricular rhythm, sudden fluctuations in cardiac cycle suddenly prone to long - short cycle, so often associated with differential indoor conduction, Abnormal QRS wave appears. Because there is no P wave, and ventricular ectopic beating is not easy to identify, but the distinction between the two have important clinical significance, which