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目的：探讨无症状脑梗塞（ Ｓ Ｃ Ｉ） 的危险因素。方法：对３４２ 例 Ｓ Ｃ Ｉ的发病特点和 Ｃ Ｔ 特征，特别对 Ｓ Ｃ Ｉ的危险因素进行探讨。结果： Ｓ Ｃ Ｉ的主要促发因素有以下几点：老年组２３６ 例（６９ ．０１） ；高血压、高血脂１８７ 例（５４ ．６８ ％ ） ；糖尿病１４２ 例（４１ ．５２ ％ ） 。其它潜在危险因素是短暂性脑缺血发作（ Ｔ Ｉ Ａ）１３１ 例（３８ ．３ ％ ） 和缺乏锻炼。结论：为提高老年人的生活质量和预防脑血管病，务必尽早防治无症状性脑梗塞。
Objective: To explore the risk factors of asymptomatic cerebral infarction (S C I). Methods: The onset characteristics and C T features of 342 cases of S C I, especially the risk factors of S C I were discussed. Results: The main causes of S C I were as follows: 236 elderly patients (69.0%), 187 hypertension patients (54.68%) and 142 (41.52%) patients with diabetes mellitus. Other potential risk factors were transient ischemic attack (TIA) in 131 (38.3%) and lack of exercise. Conclusion: To improve the quality of life of the elderly and prevent cerebrovascular disease, asymptomatic cerebral infarction must be controlled as soon as possible.