摘要
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.
ve To find the electrocardiography (ECG) characteristic for predicting the right coronary(RCA) or left circumflex artery (Lcx) occlusion by comparative standard 18-lead ECG and selective coronary cinean-giography (CAG) .Methods 36 patients with acute inferior myocardial infarction had accepted CAG and ECG ex-amination .Results In the RCA occlusion group, III ST ↑ > II ST ↑ in 21 patients (80.7%),avL ST ↓ > I ST ↓ 28cases (84. 8% ),V7-V9ST ↑ 2 cases (22. 2% ),V3R-V5R ST ↑ 12 cases (100% );In the Lcx occlusion group, III ST ↑ >II ST ↑ in no patients(0%), avLST ↓ > I ST ↓ 5 cases(25.2%), V7-V9 ST ↑ 7 cases (77.7%), V3R-V5R ST ↑ 0cases .In the ST segment changes, there was significant difference between the RCA occlusion group and the Lcx (P< 0.01). Conclusion These ECG characteriSTic could aid to clinic diagnosis of RCA or Lcx occlusion.
关键词
心肌梗塞
心电图
冠状动脉造影术
右冠状动脉
急性
Myocardial infarction
Electrocardiography
Coronary cineangiogiography
Right coronaryartery
Left circumflex artery
