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-  2016 

重复神经刺激在肌萎缩侧索硬化和重症肌无力患者的应用比较 Application of Repetitive Nerve Stimulation in Patients with Amyotrophic Lateral Sclerosis and Myasthenia Gravis:A Comparative Study

Keywords: 肌萎缩侧索硬化,重症肌无力,重复神经刺激,递减反应

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Abstract:

目的:比较重复神经刺激(RNS)应用于肌萎缩侧索硬化(ALS)和重症肌无力(MG)患者的特点及临床意义。方法:收集2013年12月至2015年8月就诊于我院,临床确诊或拟诊型ALS患者和临床诊断的MG患者,比较远、近端神经低频RNS时,复合肌肉动作电位(CMAP)波幅及其异常递减,对两组患者诊断性评估的价值。结果:1 ALS患者68例、MG 52例,RNS阳性者分别为37例(54.4%)、34例(65.4%),两组总阳性率无差异(χ2=0.993,P=0.319)。2RNS阳性率在ALS组的尺、副神经分别为4.4%、51.5%(χ2=6.972,P=0.000),MG组尺、正中、面、副神经15.4%、38.7%、58.0%、65.4%(χ2=30.152,P=0.000)。3RNS递减幅度(%)在ALS和MG组的尺神经分别为15.5±7.5、30.4±8.4(t=2.699,P=0.024),副神经18.2±7.1、27.3±10.7(t=17.442,P=0.000)。4ALS组中RNS阳性和阴性亚组,病情进展速度1.5±1.0、1.0±0.9(t=2.11,P=0.039);尺神经运动波幅(mV)为5.0±3.4、7.0±3.0(t=-2.496,P=0.016),正中神经2.8±2.4、4.6±2.7(t=-2.993,P=0.004)。结论:ALS患者中RNS递减反应者高达50%以上,但递减幅度不如MG;RNS阳性及运动反应波幅低提示ALS病情进展速度快,有助于预后的随访评估

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