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目的 通过18导联心电图(ECG)与选择性冠状动脉造影(CAG)对比分析,寻找诊断右冠状动脉(RCA)或左回旋支(Lcx)闭塞的心电图特征.方法 36例下壁心肌梗塞患者进行18导联ECG与CAG结果对比.结果 ⅢST↑>ⅡST↑,RCA闭塞组为21例(80.7%);Lcx闭塞组为0例(0%),两者有显著差异.avL ST↓>Ⅰ ST↓,RCA闭塞组28例(84.8%);Lcx闭塞组5例(15.1%),有显著差异.V_7～V_9ST↑,RCA闭塞组2例(22.2%);Lcx组7例(77.7%),有显著差异.V_(3R)～V_(5R)ST↑,RCA组为12例(100%),Lcx组0例(0%),有显著差异.结论 这些心电图特征在下壁心肌梗塞时有助于RCA或Lcx闭塞的临床诊断.
Objective To analyze the electrocardiographic features of right coronary artery (RCA) or left circumflex artery (Lcx) occlusion by 18-lead ECG and selective coronary angiography (CAG) .Methods 36 patients with inferior myocardial infarction The results of 18 ECG ECG and CAG were compared.Results ⅢST ↑> ⅡST ↑, there were 21 cases (80.7%) in RCA occlusion group and 0 cases (0%) in Lcx occlusion group, with significant difference ↓, there were 28 cases (84.8%) in RCA occlusion group and 5 cases (15.1%) in Lcx occlusion group, with significant difference between V_7 ~ V_9ST ↑, RCA occlusion group 2 cases (22.2% (3R) ~ V_ (5R) ST ↑, there were 12 cases (100%) in the RCA group and 0 cases (0%) in the Lcx group.Conclusion These ECG features are helpful in the treatment of inferior myocardial infarction Clinical diagnosis of occlusion of RCA or Lcx.