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目的 探讨急性心肌梗死相关血管的病变特点。方法 目测法判定冠状动脉血管病变的程度 ,根据直径狭窄百分数或横截面积百分数 ,管腔狭窄≥ 50 %为有意义的病变。结果 84例急性心肌梗死ST段抬高 76例 ,非ST段抬高 8例 ,狭窄 <70 % 1 3例(1 5 .5 % ) ,70 %～ 2 9例 (34 .5 % ) ,90 %～ 2 1例 (2 5 .0 % ) ,1 0 0 %闭塞 2 1例 (2 5 % )。结论 固定性机械性狭窄是造成急性心肌梗死的主要原因。不稳定斑块破裂及血栓形成 ,冠状动脉持续痉挛及血管内膜不光滑造成单纯的血栓形成也是造成急性心肌梗死的原因之一。
Objective To investigate the pathological changes of blood vessels related to acute myocardial infarction. Methods Visual examination was used to determine the degree of coronary artery disease. According to the percentage of diameter stenosis or cross-sectional area, stenosis≥50% was a significant lesion. Results Seventy-six patients with ST-segment elevation in 84 patients with acute myocardial infarction were enrolled in this study. There were 8 cases with non-ST-segment elevation, 13 cases (15.5%) with stenosis less than 70%, 70 cases (29.5%) with 90 % ~ 2 1 (25.0%), 100% occlusion 21 cases (25%). Conclusion Fixed mechanical stenosis is the main cause of acute myocardial infarction. Unstable plaque rupture and thrombosis, persistent coronary spasm and intima-causing intima caused by simple thrombosis is also one of the causes of acute myocardial infarction.