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本研究比较了美国全国范围内非阻塞性、阻塞性和无症状冠心病患者心肌梗死发生率和死亡率之间的差异。研究者对2007年10月至2012年9月间在退伍军人事务中心的健康系统中所有进行择期冠状动脉造影的患者进行回顾性队列研究,排除既往诊断冠心病的患者。根据冠状动脉造影结果确定冠状动脉狭窄程度。记录病变分布(单支、双支或三支病变)情况。主要临床终点为1年内非致死性心肌梗死住院率,次要终点包括1年内全因死
This study compared the differences in rates of MI and mortality among patients with non-obstructive, obstructive, and asymptomatic CAD in the United States. The investigators performed a retrospective cohort study of all patients undergoing elective coronary angiography in the Veterans Affairs Center’s health system between October 2007 and September 2012, excluding patients previously diagnosed with coronary heart disease. According to the results of coronary angiography to determine the degree of coronary artery stenosis. Record the distribution of lesions (single, double or triple lesions). The primary clinical endpoint was hospitalization for non-fatal myocardial infarction within 1 year, with secondary end points including all-cause mortality within 1 year