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第二节心肌梗塞的心电图诊断一、心肌梗塞心电图的改变机理急性心肌梗塞的主要原因是冠状动脉的突然阻塞,使依靠这支冠状动脉供给血液的一片心肌,因缺血而受损伤以致于坏死。病理变化可分为三个阶段,首先是缺血,继而发生肌肉损伤,再进一步产生心肌坏死,达三者的变化,造成了典型的、一连串的心电图改变,如将电极放在各损害区域,分别得到下列的变化:
Section ECG diagnosis of myocardial infarction First, the mechanism of myocardial infarction ECG changes Acute myocardial infarction is the main reason for sudden blockage of the coronary artery, so rely on this coronary artery to supply a piece of blood, due to ischemia and damage caused by necrosis . Pathological changes can be divided into three stages, the first is ischemia, followed by muscle damage, and further myocardial necrosis, up to three changes, resulting in a typical, a series of ECG changes, such as the electrode on the damage area, Obtain the following changes respectively: