Objective: To explore the onset features and prognosis in "migratory birds" population with acute myocardial infarction (AMI) in Hainan province. Methods: A total of 1246 patients diagnosed as coronary aretery disease and admitted in our Hospital during 2012-2015 were consecutively enrolled, including "Migratory birds" group (n=197) and Hainan group (n=58). Clinical information, risk factors, interventional strategies and in-hospital outcomes were recorded and compared. Results: The patients' age, histories of hypertension, diabetes, smoking and blood lipids were similar between 2 groups. In "Migratory birds" group, the average time from arriving Hainan to AMI onset was (3.15±2.67) days. Compared with Hainan group, "Migratory birds" group had the higher ratio of acute STEMI occurrence [70.56% (139/197) vs 51.72% (30/58), P=0.003], more patients with single+double coronary artery diseases (P=0.009), and thrombus aspiration (P=0.008); while less stent implantation, P=0.007. "Migratory birds" group also presented the higher ratios of cardiac shock after AMI (12.69%vs 3.45%, P=0.044), and cardiac shock+death (16.24% vs 3.45%, P=0.022). Conclusion: "Migratory birds" AMI patients had the higher ratios of acute STEMI, with more simple lesions and thrombus aspiration, they usually had poor prognosis.%目的:探讨海南"候鸟人群"急性心肌梗死(AMI)的发作特点及预后分析.方法:连续入选2012~2015年冬季在我院住院的1246例冠心病患者,其中发生AMI的255例.患者根据来源分为"候鸟人群"组(n=197)和海南人群组(n=58),比较两组患者的临床资料、危险因素、冠状动脉造影、介入治疗资料及院内转归.结果:两组患者的年龄、高血压、糖尿病、吸烟、血脂水平差异无统计学意义."候鸟人群"组患者到达海南后发生AMI的平均时间为(3.15±2.67)天.与海南人群组比较,"候鸟人群"组急性ST段抬高型心肌梗死的发病比例高[70.56%(139/197)vs 51.72%(30/58),P=0.003],冠状动脉单支+双支病变的比例高(P=0.009)、血栓抽吸的比例高(P=0.008),而支架置入的数量少(P=0.007);发生AMI后出现心原性休克的比例(12.69%vs 3.45%,P=0.044)和心原性休克+死亡的比例(16.24%vs 3.45%,P=0.022)均较高.结论:"候鸟人群"AMI患者中,急性ST段抬高型心肌梗死发病比例高,简单病变多、血栓抽吸多、预后差.
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