糖尿病患者的体感诱发电位

应用电子计算机迭加平均技术,记录了23名正常人和25例糖尿病患者的电刺激正中神经和胫后神经的体感诱发电位(somatosensory evoked potentials,SEPs)。结果发现,大部分患者均有SEPs成份峰值潜伏期的延长,以及正中神经和胫后神经传入纤维传导速度的减慢;部分患者有中枢传导时间(N13-N20传导时间和P40-N80传导时间)的延长。此外,外周神经三相电位的波形也出现异常变化。这些结果提示,糖尿病患者不仅可出现外周神经传导功能障碍,而且也可出现中枢神经传导功能异常。

Somatosensory evoked potentials in patients with diabetes mellitus

Using the average technique of the electronic computer, we recorded the somatosensory evoked Potentials (SEPs) by electrical stimulation of median nerve (MN) and posterior tibial nerve (PTN) in twenty-three normal subjects and twenty-five diabetic patients. The peak latencies of SEPs components were prolonged, and the afferent conduction velocities of MN and PTN were reduced in most patients. In some patients, the central conduction time (N13-N20 and P40-N80 conduction time) was prolonged. Besides, there was a significant change in the shape of triphasal potentials recorded from Erb's point.and popliteal fossa. These results suggest: there not only was abnormality of conductive function of peripheralnerves, but also, the conductive function of central nervous system might be involved in diabetes mellitus.