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左冠状动脉回旋支(LCB)阻塞的心肌梗死,超急性期诊断困难。本研究的目的在于阐明这类心肌梗死发病早期的心电图特征及其动态变化。对象与方法对象:发病6h内、经冠状动脉造影确诊为LCB阻塞的急性心肌梗死(但无尖锐T波及ST段抬高、不符合1994年NYHA心电图诊断标准)患者16例。以冠状动脉造影示管腔狭窄≥75％为显著性病变。则LCB一分支病变者9例,LCB多分支病变者7例;LCB的AHA分类:11型1例、12型1例、13型12例、14型2例.14例完全阻塞、1
Left coronary artery occlusion (LCB) obstruction of myocardial infarction, hyperacute phase diagnosis difficult. The purpose of this study is to clarify the characteristics of ECG and its dynamic changes in the early stage of myocardial infarction. Subjects and Methods Subjects: Sixteen patients with acute myocardial infarction confirmed by coronary angiography as obstructive LCB within 6 hours of onset (but without sharp T-wave and ST-segment elevation, which did not meet the NYHA diagnostic criteria of 1994). Coronary angiography showed stenosis ≥75% as a significant lesion. LCB AHA classification: 11 cases of type 1, 12 cases of type 1, 12 cases of type 13, 14 cases of type 2. 14 cases of complete obstruction, 1