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分析56例格林-巴利综合征的肌电图,其中测定远端MCV51例和近端MCV6例。肌电图呈神经性受损者占80.4％,纤颤正相电位在病程30天后明显增加,3个月后又逐渐减少。远端MCV减慢以病后31～60天最明显,而末梢潜伏期异常率比MCV高且早出现;近端MCV变慢比远端MCV明显,甚至见于后者正常中。认为纤颤正相电位和MCV对协助诊断和估价预后有一定帮助,而末端潜伏期延长可能对早期诊断更有意义,某些病例近端MCV比远端MCV更具有诊断价值。
Fifty-six patients with Guillain-Barre syndrome were analyzed by electromyography, in which 51 cases of distal MCV and 6 cases of proximal MCV were measured. EMG neurological damage accounted for 80.4%, fibrillation positive phase potential in the course of 30 days significantly increased after 3 months and then gradually reduced. Distal MCV slowed to the most obvious after 31 to 60 days, while the abnormal rate of peripheral latency higher than MCV and early appeared; proximal MCV slower than the distal MCV significantly, even in the latter normal. It is believed that the positive phase potential of fibrillation and MCV may help to diagnose and evaluate the prognosis. However, the prolongation of the terminal latency may be more meaningful for early diagnosis. In some cases, the proximal MCV is more valuable than the distal MCV.