在介绍“怎样看心电图”之前,首先要了解一些有关心电及心脏电激动的传导知识。我们知道,心肚的跳动是受它本身所产生的电位激动刺激而起搏的。其所以能产生电位激动,并产生有节律的起搏、跳动,主要是心脏的心肌细胞具有应激性(兴奋性)自律性、传导性和收缩性。所谓应激性(兴奋性)是指心肌细胞对刺激能发 Before introducing “how to read the ECG”, we must first understand some of the conduction of knowledge about ECG and cardiac electrical activation. We know that the beating of heart beats by its own potential stimulation. As a result, it produces potentials and generates rhythmic pacing and beating. Cardiac myocytes mainly have stress (excitability) self-discipline, conductivity and contractility. The so-called stress (excitability) refers to the stimulation of cardiomyocytes to hair