10例平山病肌电图特点分析

目的:总结分析平山病的肌电图特点,为该病诊断与鉴别诊断提供神经电生理依据。方法:收集10例平山病患者临床、肌电图与常规和屈颈位MRI影像学资料,进行回顾性对比分析。结果:10例患者肌电图被检肌肉146块中78块异常,主要分布在C7-T1神经支配区,出现纤颤、正相自发电位,运动单位电位时限增宽、波幅增高。检测38条运动神经传导速度、36条感觉神经传导速度均在正常范围。结论:平山病的肌电图特点为下颈髓节段性前角损害,与屈颈位MRI显示的病变部位一致,对诊断与鉴别诊断具有临床实用价值。

Electromyologram characteristic analysis of 10 Patients with Hirayama Disease

Objective:This study was to summarize and analyze the characteristic of Electromyologram in Hirayama Disease and to provide the electrophysiological evidence for diagnosis and differential diagnosis.Methods:The clinic,electromyologram information,and neutral neck position and neck flexion MRI imaging examination were collected from 10 patients final diagnosed as Hirayama Disease.They were contrasted and analyzed retrospectively.Results:78 out of 146 examined muscles in 10 patients were abnormal,mainly distributed over the area of C7-T1 innervations,showed fibrillation potentials,positive sharp waves,the long duration and large amplitude motor unit potential(MUP).The conduction velocity of 38 motor nerves and 36 sensory nerves examined were normal.Conclusion:The view that the EMG characteristic in Hirayama Disease is segmental anterior horn injury in inferior cervical cord,accordance with the diseased region showed by neck flexion MRI is valuable to the clinical diagnosis and differential diagnosis.