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心电图P波是反映心房电生理学特性的重要指标,研究显示包括P波时限、P波离散度、P波终末电势和PR间期等在内的P波指数异常与左心房扩大[1]、心房颤动(简称房颤)等房性心律失常发生率增加[2]有关。本文就P波指数的测量方法与临床意义综述如下。一.P波指数定义P波指数包括P波时限(duration)、振幅(amplitude)、离散度(dispersion)、终末电势(terminal
ECG P wave is an important indicator of atrial electrophysiological properties of the study showed that including the P wave time limit, P wave dispersion, P wave end potential and PR interval, including abnormal P wave index and left atrial enlargement [1], Atrial fibrillation (referred to as atrial fibrillation) and other increased incidence of atrial arrhythmia [2]. This article on the P wave index measurement methods and clinical significance are summarized below. I. P Wave Index Definition The P wave index includes the P wave duration, amplitude, dispersion, terminal