急性左主干病变的心电图分析

目的探讨急性左主干（LMCA）病变的心电图改变。方法分析因急性心肌梗死住院的76例患者（后经冠状动脉造影证实16例为左主干病变，60例为前降支病变）的心电图特点，按病变冠脉分为左主干组和前降支（LAD）组。结果STaVR↑发生率、STaVR↑〉STv1↑的发生率、STaVR↑伴STv1～STv3↑不明显的发生率、STaVR与STaVL均抬高的发生率、STv6↑／STv1↑≥1的发生率，LMCA组明显高于LAD组，二者差异有统计学意义（P〈0．05）。STaVR↑幅度，STaVR↑伴STⅡ、STⅢ、STaVF↓幅度，LMCA组明显高于LAD组，二者差异有统计学意义（P〈0．05）。结论左主干心电图表现为STaVR↑、STaVR↑〉STv1↑、STaVR↑伴STv1-v3↑不明显、STvVR与STaVL均抬高、STv6↑／STv1↑≥1。

Electrocardiogram analysis in the patients with acute left main coronary artery disease

Objective To explore ECG changes in the in the patients with acute left main coronary artery disease. Methods There were total 76 patients with acute myocardial infarction were enrolled in our study, which were divided into 2 groups, after coronary angiography,16 case with left main coronary artery obstruction （LMCA group）, 60 cases with acute left anterior descending coronary obstruction（LAD group）. Results The percentage of STaVR↑ ,STaVR↑ 〉STv1↑ ,not obvious of STaVR↑ with STvl-STv3 ↑ , STVR ↑ and STaVL↑ ,STv6↑ / STv1↑≥ 1 in the LMCA group was much higher than that in the LAD group and the difference was significant between LAD and LMCA group （P〈0.05）. The extent of STaVR↑ and STaVR↑ with STⅡ, STⅢ, STaVF↓ in the LMCA group was much higher than that in the LAD group and the difference was significant between LAD and LMCA group （P〈 0.05）. Conclusion STaVR↑, STaVR↑ 〉STv1↑ not obvious of STaVR↑ with STv1,-STv3 ↑, STaVR↑ and STaVL ↑, STv6↑ / STv1↑≥ 1／ STaVR↑ with STⅡ, STⅢ, STart ↓, is well correlated to acute left main coronary artery disease.