目的了解认知功能正常的老年人认知功能变化与不同载脂蛋白e (APOE)基因型及血管性风险因子的关系。

Objective to evaluate the correlation between cognitive changes and APOE genotype as well as vascular risk factors among the cognitively normal elderly.

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结论以本研究设立的诊断标准所确立的MCI，其认知功能介于痴呆和正常认知老年人之间，并与早期AD具有相似的认知功能改变。

Conclusions MCI is the boundary between AD and normal aging, and its cognitive impairment has changes similar to the early stage of AD.

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正常老年人术后，其认知功能有损害，尤其是记忆功能（p<0.05）。

Postoperative of normal elderly patients, the cognitive impaired is the memory function (p <0.05).

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正常老年人术后，其认知功能有损害，尤其是记忆功能（p<0.05）。

Postoperative of normal elderly patients, the cognitive impaired is the memory function (p <0.05).

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