急性下壁心肌梗死胸前导联心电图变化与冠状动脉造影结果的对比研究

THE RESEARCH OF RELATIONSHIP BETWEEN CORONARY ARTERIOGRAPHY AND ECG CHANGES OF PRECORDIAL LEADS FOR ACUTE INFERIOR MYOCARDIAL INFARCTION PATIENTS

目的探讨胸前导联心电图变化在急性下壁心肌梗死患者诊治过程中的临床价值。方法选择急性下壁心肌梗死患者80例,依据胸前导联ST段压低幅度和持续时间分为4组,所有患者均在发病7～10d内完成冠状动脉造影,统计各组患者不同血管病变例数并进行统计学分析。结果胸前导联ST段压低持续时间不足72h与持续时间超过72h患者造影结果对比和胸前导联ST段压低<2mm与≥2mm患者造影结果对比,右冠状动脉病变及左回旋支病变例数差异无统计学意义(P>0.05),右冠状动脉或左回旋支合并左前降支病变例数差异有统计学意义(P<0.05)。结论下壁心肌梗死患者若胸前导联ST段压低幅度较大,且持续时间较长,则右冠状动脉或左回旋支合并左前降支病变可能性大。

Objective To research the value of the precordial leads of ECG for the diagnosis of acute inferior myocardial infarction. Methods Eighty patients were recruited and divided into 4 groups by the amplitude of ST depression and the lasting time. Coronary arteriography were performed for all of the patients in 7 to 10 days. The data of artery abnormal were collected and analyzed. Results The comparison of angiography between patients whose ST depression lasting time were less than 72h and those no less than 72h ,and between patients whose ST depression were less than 2mm and those no less than 2mm indicated that there is no statistically significant difference in terms of cases that only fight coronary artery or left circumflex injured （ P 〉 0.05 ）, but there is statistically significant difference in terms of cases that fight coronary artery or combined with left circumflex injured （P 〈 0.05 ）. Conclusion For those patients whose ST depression on precordial leads have a larger amplitude or long lasting time, the left anterior descending are more likely to be abnormal.