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在一些国家里,由于中年以上者比重的增加所引起居民年令组的显著变动是影响心血管系统疾病漫延的重要因素之一,特别是影响到心肌梗死患病率的增加。另一个重要情况是提高了对心肌梗死的诊断,明确了青年组心肌梗死患病率在增多。按一些研究者的资料来看,40岁以下患心肌梗死的病人占患病总数的3——20%。
In some countries, a significant change in the annual group of residents as a result of the increase in the proportion of middle-aged and older people is one of the important factors that affect the spread of cardiovascular system diseases, especially the increase in the prevalence of myocardial infarction. Another important situation is to improve the diagnosis of myocardial infarction, a clear increase in the prevalence of myocardial infarction in young people. According to some researchers’ data, patients under 40 years of age suffering from myocardial infarction accounted for 3 - 20% of the total number of cases.