对协作组1987～1991年收治的急性心肌梗塞(AMI)病例中62例小于40岁者进行了分析,占全组1.5%,男女之比为19.7:1。与同期收治的40～59岁病例比较,有吸烟史者明显高(85.5%:54.6%),有心绞痛者明显低(29.0%:51.3%)。梗塞部位、并发症与病死率无显著性差异。提出对冠心病AMI的预防(包括二级预防)应自青年时期开始。 62 cases of acute myocardial infarction (AMI) admitted to the cooperative group from 1987 to 1991 were less than 40 years of age were analyzed, accounting for 1.5% of the whole group, the ratio of male to female was 19.7: 1. Compared with the 40- to 59-year-old patients admitted in the same period, those with smoking history were significantly higher (85.5% vs 54.6%) and those with angina were significantly lower (29.0%; 51.3%). Infarction, complications and mortality no significant difference. Proposed AMI prevention of coronary heart disease (including secondary prevention) should start from youth.