急性冠状动脉综合征患者心电图和相应病变血管的关系分析

目的 确定十二导联心电图上相应ST段压低与急性左主干病变的关系。方法 选取2003-06—2006-06因左主干或左前降支病变进行PCI手术的79例患者，18例是由于急性左主干闭塞或高度狭窄引起的急性冠状动脉综合征，61例是由于左前降支冠状动脉病变引起的急性冠状动脉综合征，分析病变血管和相应心电图变化的关系。结果 急性左主干闭塞或高度狭窄患者在aVF、v2、v3、v4、v5和v6导联上相应ST段压低的发生率明显高于左前降支冠状动脉病变患者。多元线性分析表明，在aVF、V2和v4导联上ST段压低可能区分左前降支病变与左主干病变。结论 在十二导联心电图上V2、V4、aVF导联ST段压低，对急性左主干闭塞或高度狭窄是重要的预测指标。

Correlation between ECG and corresponding coronary artery lesion in acute coronary syndrome patients

Objective To analyze the correlation between corresponding ST segment depression of 12-lead ECG and acute left main coronary artery(LMCA)disease.Methods From June 2003 to June 2006,79 patients with acute coronary syndrome(ACS)who underwent percutaneous coronary intervention due to LMCA(n=18)or a left anterior descending coronary artery(LADCA)(n=61)occlusion or high stenosis were selected.To analyze the relationship between the corresponding ST segment depression of 12-lead ECG and coronary artery lesion.Results The incidence rate of corresponding ST segment depression occurred in leads aVF,V2,V3,V4,V5 and V6 was higher in the LMCA group than in the LADCA group.Stepwise multivariate linear analysis indicated that ST segment depression in leads aVF,V2 and V4 could distinguish the LMCA group from the LADCA group.Conclusion Corresponding ST segment depression in leads V2,V4 and aVF of 12-lead ECG is an important predictor of acute LMCA occlusion or high stenosis.