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心肌炎虽有各种不同的病因,但均可引起类似的心电图表现。导致心电图改变的主要原因有: 1、由于心肌不同程度的缺血、损伤和灶性坏死、变性、纤维化而造成ST-T波的改变或出现异常的Q波。 2、由于心脏传导系统受累,影响其自律性、应激性或传导性,而导致各种心律失常。 3、影响心室的除极和复极。国内报告545例心肌炎的心电图改变如下:(1)ST-T波变化:占47％。除伴有急性心包炎或心外膜下心肌损伤出现ST段抬高外,一般表现为ST段压低,伴有T波低平、平坦、双向或倒置。偶而也可出现异常的Q波,酷似心肌梗塞。
Although a variety of different causes of myocarditis, but can cause similar ECG performance. Lead to ECG changes are: 1, due to varying degrees of myocardial ischemia, injury and focal necrosis, degeneration, fibrosis caused by ST-T wave changes or abnormal Q wave. 2, due to heart conduction system involvement, affecting their self-discipline, stress or conductivity, which led to a variety of arrhythmias. 3, affect the ventricular depolarization and repolarization. Domestic reports 545 cases of myocarditis electrocardiogram changes are as follows: (1) ST-T wave changes: 47%. Except with acute pericarditis or sub-epicardial myocardial injury appears ST segment elevation, the general performance of the ST segment depression, accompanied by T wave low flat, flat, bi-directional or inverted. Occasionally there may be abnormal Q wave, resembles myocardial infarction.