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针电极记录面神经F波及相关参数在偏侧面肌痉挛中的应用

Chinese Journal of Nervous and Mental Diseases(2019)

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Abstract
目的 建立针电极记录面神经 F 波各参数正常参考值,为临床评估偏侧面肌痉挛(hemifacial spasm,HFS)提供电生理依据.方法 对22例HFS患者及36名健康对照组进行双侧面神经F波检测.该方法以下颌缘支刺激、针电极颏肌记录,同时获取复合肌肉动作电位(compound muscle action potentials,CAMP或M波)及F波.比较HFS组与健康对照组F波及相关参数的差异,并探讨HFS组F波参数与痉挛程度评分(Cohen Grading)的相关性.结果 健康对照组,F波的潜伏期、出现率、时程及F波与M波的波幅比(ration of F-wave amplitude and M-wave amplitude,F/M)左右两侧及性别间无统计学差异,F波最小潜伏期(minimal latency of F-wave,Fmin)及平均潜伏期(mean latency of F-wave,Fmean)与头围呈正相关(Fmin r=0.449,P=0.013;Fmean r=0.391, P=0.033),但未发现其与年龄或身高相关. HFS组痉挛侧的F波平均时程(duration of F-wave,Fdura)较非痉挛侧(13.1 ms vs. 9.5 ms,P<0.01)及健康对照组(13.1 ms vs. 9.7 ms,P<0.001)延长,痉挛侧F/M较非痉挛侧(6.9% vs. 3.8%,P<0.001)及健康对照组(6.9% vs. 3.7%,P<0.001)增加.痉挛侧F/M与Cohen评分呈正相关(r=0.538,P=0.001).结论 运用针电极可在颏肌记录到清晰的面神经F波,在HFS患者中可见痉挛侧延长的Fdura和增高的F/M,F/M可为临床评价HFS患者痉挛程度提供客观依据.
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Key words
Facial nerve,F wave,F/M,Needle electrode recording,Hemifacial spasm
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