老年糖尿病伴或不伴脑梗死患者P300诱发电位测定的临床意义

Clinical significance of P300evoked potential in elderly diabetic patients with or without cerebral infarction

摘要:

目的探讨老年糖尿病伴或不伴脑梗死患者听觉认知电位P300的变化特点及诊断价值.方法采用听觉Cond序列刺激的诱发电位方法对81例老年糖尿病患者(其中35例合并有多发性脑梗死)与30例健康老人进行测试.结果(1)糖尿病组与对照组健康老人比较,前者P300波潜伏期明显延长,P300波波幅显著降低.(2)糖尿病伴脑梗死组与不伴脑梗死组比较,前者P300波潜伏期明显延长,P300波波幅显著降低.(3)糖尿病组伴血管性痴呆亚组(VD)与多发性脑梗死亚组(MI)比较,前者P300波潜伏期更显著延长(P＜0.001),VD组P300潜伏期与简易智能化量表(MMSE)评分呈显著性负相关(P＜0.005).(4)糖尿病伴抑郁组与不伴抑郁组比较,前者P300波潜伏期明显延长,P300波波幅显著降低.结论老年糖尿病患者比正常健康组P300波潜伏期明显延长,P300波幅明显降低,老年糖尿病组中合并脑梗死时P300波改变更为显著.因此P300测试更利于血管性痴呆的早期诊断及疾病严重程度的观察.

Abstract:

Objective To investigate the characteristics of auditory cognitive potential P 300in elderly diabetics with or without cerebral infarction. Methods Eighty-one elderly diabetic patients (35 with multiple cerebral infarctions) and 30 elderly controls