无明显冠状动脉狭窄的急性心肌梗死的临床特征Clinical characteristics of acute myocardial infarction without angiographically coronary artery stenosis
江时森,黄浙勇,汤沂
摘要(Abstract)：
目的研究无明显冠状动脉狭窄的急性心肌梗死(AMI)患者的冠心病危险因素、心功能特点,并进一步探讨其发生机制。方法将399例AMI患者根据冠状动脉造影(CAG)结果分为冠状动脉狭窄组(直径狭窄程度≥50%)和冠状动脉无明显狭窄组(直径狭窄程度<50%),比较分析二组的冠心病相关危险因素及心功能情况。结果399例AMI患者中冠状动脉造影无明显狭窄23例,占心肌梗死患者的5.76%(23399);冠状动脉狭窄376例,占94.24%(376399)。与冠状动脉狭窄组比较,冠状动脉无明显狭窄组的AMI患者平均年龄较小,其中小于40岁的患者占26.08%(623),女性多见。二组在糖尿病、高脂血症、高血压和冠心病危险因素数目方面差异无统计学意义。冠状动脉无明显狭窄组的AMI患者左心室舒张末压(LVEDP)显著低于冠状动脉狭窄组;左心室射血分数(LVEF)稍高,但差异无统计学意义。结论冠状动脉造影无明显狭窄的AMI患者在临床上并非罕见,应引起足够重视。其临床特点为心功能较好,与冠状动脉造影狭窄的AMI患者具有相似的冠心病危险因素数目和糖尿病、高脂血症、高血压发生率,但在年轻人、女性相对多见。
关键词(KeyWords)： 心肌梗死;冠状动脉狭窄;诊断
基金项目(Foundation):
作者(Author): 江时森,黄浙勇,汤沂
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