急性下壁心肌梗塞(下简称AIMI)的早期心电图特征为Ⅱ、Ⅲ和aVF导联的S-T段抬高,部分病例在非梗塞心肌的表面导联则经常记录到S-T段压低,这一现象被称为对应性改变,此种变化可见于Ⅰ、aVL和V_1～V_4中的部分或全部导联。 AIMI时下壁导联的S-T段抬高,系损伤电流所致,而S-T段压低用单纯电现象解释仍有争论。据近年国外研究表明,AIMI The early electrocardiographic features of acute inferior myocardial infarction (AIMI) are ST elevation in leads II, III, and aVF. In some cases, the surface lead of non-infarcted myocardium frequently records ST depression. Known as the correspondence change, such changes can be found in Ⅰ, aVL and V_1 ~ V_4 part or all of the lead. In AIMI, the S-T segment of the inferior leads is elevated, which is caused by the injury current. However, the S-T segment depression is still controversial with the simple electrical phenomenon. According to foreign studies show that in recent years, AIMI