前壁心肌梗塞并下壁或侧壁心电图ST段压低患者的冠状动脉造影分析

Inferior or lateral leads ST depression in anterior myocardial infarction:analysis of coronary angiography

目的：分析急性前壁心肌梗塞患者心电图出现侧壁或下壁ＳＴ段压低的意义。方法：对４９例首次发病的急性前壁心肌梗塞患者的心电图与冠状动脉（冠脉）造影结果对比分析。结果：合并侧壁和下壁ＳＴ段压低者，特别是侧壁导联ＳＴ段压低者，其冠脉前降支近端多存在显著狭窄，Ｐ值分别＜０．０５和＜０．０１；在下壁或（和）侧壁导联ＳＴ段压低者中，冠脉往往有多支存在病变。

Objective:Significance of acute anterior myocardial infarction(AMI) with inferior and lateral leads ST depression in the electrocardiogram was analyzed.Methods:The location and size of coronary disease were observed by coronary angiography.Results:Significant stenosis was seen in the proximal left anterior descending artery in patients with ST depression in inferior and lateral leads,especially the latter( P <0 05 and P <0 01 respectively).The impact of multiple coronary lesions was not very obvious.Conclusions:Presence of ST depression in the above leads in patients with anterior AMI mainly indicates the presence of serious lesions in the proximal segment of anterior decending artery and the lesions badly effected the collateral flow in the inferior and lateral walls.However,the effect of this change is not clear as the severity of the lesions in other coronary branches varies.