68例有机磷中毒致周围神经损害的电生理分析

目的观察有机磷中毒的肌电图、神经传导速度改变。方法对68例有机磷中毒患者进行常规肌电图（EMG）及神经传导速度（NCV）测定。结果纤颤电位出现率30％，正向波出现率32％，轻收缩时运动单位电位平均时限延长（57％），波幅增高（36％），多相波增多（32％），重收缩呈单纯相41％，混合相48％。神经传导速度：SCV减慢（24％），MCV减慢（61％），远端潜伏期延长（47％）。结论电生理检查对有机磷中毒患者受损肌肉、受损神经、损害性质及预后判断有重要价值。

Analysis of electroneurophysiological characteristics in 68 patients with organophosphate-induced neuropathy

Objective To observe the changes of EMG and never conduction velocity（NCV） in the pa- tients with organophosphate-induced neuropathy. Methods EMG and nerve conduction velocity were tested in the patients with organophosphate-induced neuropathy. Results The positive rate of fibrillation potential was 30%, that of positive wave 32%. During light contraction, the positive rate of positive potential prolonged was 57%, that of the increased amplitude 36% and that of the increased multiphasic potential 32%. The simple phase was 41% and the mixed phase was 48% in heave contraction. NCV examination showed that decreased sensor conduction velocity （SCV） was 24%, and decreased motor conduction velocity （MCV） 61%, and prolonged of the distal latency 47%. Conclusions The electrophysiological testing has important role of finding nerve and muscle damage, damaged nature, and prognostic value in the patients with organophosphate poisoning.