背景:急性心肌梗死(AMI)患者需要紧急诊治,但诊治条件在周末和工作日并不相同。方法:利用心肌梗死数据采集系统,比较在周末或工作日入院的首发AMI患者的死亡率。共纳入新泽西州1987—2002年间231164例首发AMI患者,每隔4年分组。结果:周末入院患者和工作日入院患者之间人口统计学特征、并存病和梗死部位并无显著差异,但周末入院患者较少接受有创性心脏治疗,尤其是在入院后第1～2天(P<0.001)。 Background: Patients with acute myocardial infarction (AMI) require emergency diagnosis and treatment, but the conditions of diagnosis and treatment are not the same on weekends and working days. METHODS: Myocardial infarction data collection system was used to compare the mortality of first-episode AMI patients who were hospitalized on weekends or working days. A total of 231,116 first-episode AMI patients were recruited in New Jersey between 1987 and 2002, and were grouped every four years. Results: There were no significant differences in demographics, comorbidity and infarction between weekend admission and weekdays admission, but less admission to invasive heart surgery on weekends, especially on days 1 to 2 after admission (P <0.001).