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目的比较不同发病因素作用于急性心肌梗塞青年病人和老年病人的不同特点。方法本文将５２９例急性心肌梗塞（ＡＭＩ）病人分为青年组和老年组，对危险因素及临床各变量进行对比分析。结果ＡＭＩ老年病人比青年病人明显增高。青年病人中男性占大多数（８７１％），老年病人中女性百分率比较高（４０７％）。危险因素表明青年组以吸烟、高脂血症及家族史为常见，而老年组以高血压、糖尿病及高脂血症为常见。临床特征表明青年组疼痛症状典型、梗塞部位较局限，合并症较少，平均住院天数较短，无住院死亡，预后较好。老年组症状多不典型，多部位梗塞多，梗塞面积
Objective To compare the different characteristics of different incidence factors in acute and acute myocardial infarction patients and elderly patients. Methods 529 patients with acute myocardial infarction (AMI) were divided into young group and elderly group. The risk factors and clinical variables were compared. Results AMI elderly patients than younger patients was significantly higher. The majority of young patients were male (87.1%), while the percentage of female patients was higher (40.7%). Risk factors indicate that smoking, hyperlipidemia and family history are common in the youth group, while hypertension, diabetes and hyperlipidemia are common in the elderly group. Clinical characteristics of the youth group showed typical symptoms of pain, infarction is more limited, fewer complications, the average length of stay in hospital, no hospital deaths, the prognosis is good. Elderly group atypical multi-symptom, multi-infarction, infarct size