静脉壁和肌袖面积在中年组和老年组内有显著差异。
Significant difference of venoatrial wall and myocardial sleeve was found between old and middle-aged groups.
结论中年组冠心病病人吸烟史、阳性家族史、高脂血症为主要危险因素。
Conclusion Smoking, positive family history and hyperlipemia are the main risk factors in middle-aged coronary patients.
中年组雄性和雌性肺、胸腺、甲状腺重量与青年组相比均有显著性差异。
Both male and female, the weights of lung, thymus and thyroid in middle age group were higher than those of young age.
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