心电图的几个基本原理一、临床心电图学的概念:人体心脏机械性收缩以前,心肌首先发生电激动,这个电激动影响全身各部,在体表各处都产生了微小的电位改变。在整个心动周期过程中,体表各处的电位也随之不断地变化着。用心电图机记录出反映这些电位改变的曲线称为心电图。临床心电图学就是通过分析这些反映电位改变的曲线,并结合临床其它资料,借以协助疾病诊断及观察病情演变的一门科学。 A few basic principles of ECG First, the concept of clinical electrocardiography: mechanical contraction of the human heart before the first myocardial electrical excitement, the electrical effects of various parts of the body, all over the body surface have produced a slight change in potential. During the entire cardiac cycle, the potentials throughout the body surface also change. Curves recorded by the electrocardiograph to reflect changes in these potentials are called electrocardiograms. Clinical electrocardiography is through the analysis of these curves reflect the potential changes, combined with other clinical data to help diagnose the disease and observe the evolution of a science.