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观察224例急性心肌梗塞（AMI）的发生与时间、日期、季节之间的关系。按年龄划分为两组。Ⅰ组年龄＜60岁，Ⅱ组年龄≥60岁。观察显示：两组病人均在上午6～9时发病率最高，Ⅰ组在7～8时出现高峰，Ⅱ组在6～7时出现高峰，两组病人发病率均在星期日最高。Ⅰ组1月份发病率略高于其它月份，Ⅱ组1～2月份发病率最高。结果表明：了解急性心肌梗塞发生的时间规律，将有助于在心脏事件出现高峰之前采取有效措施，从而减少和降低急性心肌梗塞的发生率和死亡率。
To observe the relationship between 224 cases of acute myocardial infarction (AMI) and the time, date, season. Divided by age into two groups. Group Ⅰ <60 years old, group Ⅱ ≥ 60 years old. The observation showed that both groups had the highest morbidity rate from 6 am to 9 am, the peak appeared in group A from 7 to 8, the peak from 6 to 7 in group II, and the morbidity in both groups was the highest on Sunday. The incidence in January was slightly higher in group Ⅰ than in other months, and the incidence in group Ⅱ was the highest from January to February. The results show that: Understanding the time pattern of acute myocardial infarction, will help to take effective measures before the peak of cardiac events, thereby reducing and reducing the incidence of acute myocardial infarction and mortality.