This so-called " group beating" can be differentiated from a type 1 second-degree atrioventricular heart block by identifying the abnormally shaped p-waves that are characteristic of an atrial ectopic focus.

所谓的“成组搏动”可以通过辨认房性异位起搏点产生的异常形状的P波与二度I型房室传导阻滞相鉴别。