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目的：观察青年急性心肌梗塞（ＡＭＩ）的临床特点及预后。方法：对３８例（≤４０岁）青年组ＡＭＩ患者与１２０例对照组（＞４０岁）ＡＭＩ患者，从易患因素、发病诱因、临床表现、并发症及预后等方面进行对比分析。结果：青年组既往有高血压史、吸烟史，无心绞痛史及有明确发病诱因（劳累、情绪波动、饱餐、酗酒）等患者所占比例分别为１５．８％、８６．８％、８１．６％和９４．７％，对照组分别为４１．７％、６０．０％、３９．２％和４３．３％（Ｐ均＜０．０１）。青年组既往有高脂血症史、糖尿病史，并发心律失常、心力衰竭、心原性休克等患者所占比例分别为２１．０％、２．６％、５５．３％、１３．２％和５．３％，对照组分别为２５．８％、１３．３％、６３．３％、２５．０％和１０．８％（Ｐ均＞０．０５）。青年组全部好转出院，对照组１７例（１４．２％）死亡。结论：吸烟、酗酒及情绪波动是青年ＡＭＩ发病的危险因素。青年ＡＭＩ病死率低，预后较好。
Objective: To observe the clinical features and prognosis of young acute myocardial infarction (AMI). Methods: Thirty-eight AMI patients (≤40 years old) and 120 controls (AMI> 40 years old) were compared and analyzed in terms of predisposing factors, predisposition, clinical manifestations, complications and prognosis. Results: The youth group had 15.8%, 86.8%, 81% of the patients with history of hypertension, history of smoking, history of no angina pectoris and causes of definite illness (exertion, mood swings, full meal, alcoholism). 6% and 94.7% in control group and 41.7%, 60.0%, 39.2% and 43.3% in control group (all P <0.01). The youth group had the history of hyperlipidemia, history of diabetes mellitus, concurrent arrhythmia, heart failure, cardiogenic shock and other patients accounted for 21.0%, 2.6%, 55.3%, 13.2% And 5.3% in the control group and 25.8%, 13.3%, 63.3%, 25.0% and 10.8% in the control group (all P> 0.05). All young patients were discharged and the control group, 17 patients (14.2%) died. Conclusion: Smoking, alcoholism and mood swings are risk factors for the onset of AMI in youth. Youth AMI mortality is low, the prognosis is good.