Abnormal muscle response (lateral spread) and F-wave in patients with hemifacial spasm
Abnormal muscle response (lateral spread) and F-wave in patients with hemifacial spasm
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DOI：
10.1016/0022-510x(95)00308-o
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发表时间：
1996-05-01
影响因子：
4.4
通讯作者：
Toya, S
中科院分区：
文献类型：
--
作者：
Ishikawa, M;Ohira, T;Toya, S
半面肌痉挛（HFS）患者的痉挛是由于血管交叉压迫面神经引起的，微血管减压（MVD）已被证明是一种成功的治疗方法。肌肉异常反应（AMR）是由面神经其他分支支配的肌肉受到一个面神经分支的刺激而引起的，是HFS患者特有的。AMR包括刺激后约10ms发生的恒定反应和持续时间较长的后放电（可变反应，自激励）。面部肌肉中的f波是一个小的反复放电，反向传播到面部运动核，并沿同一轴突垂直返回。我们测量了HFS患者面部肌肉的amr和f波，以探讨两者的电位关系和amr的来源。我们获得了10例HFS患者的面神经诱发肌电图。下颌边缘支刺激面神经可同时引起脑磁共振后放电和增强f波。在每种情况下，这两个电位的持续时间之间存在线性相关。面神经颧支刺激引起的心肌肌amr后放电持续时间与心肌肌f波持续时间也有10例呈线性相关。这些结果表明，f波与后排放物具有相同的起源酸，AMR是一个夸大的f波。
In patients with hemifacial spasm (HFS) the spasm is due to cross compression of the facial nerve by a blood vessel and microvascular decompression (MVD) has proved to be a successful treatment, Abnormal muscle response (AMR), which can be elicited by one facial nerve branch stimulation in muscles innervated by other branches of the facial nerve, is specific for patients with HFS, and the AMR consists of a constant response occurring about 10 ms after stimulus acid an afterdischarge with long duration (variable response, autoexcitation). The F-wave in facial muscles is a small recurrent discharge that antidromically propagates to the facial motonucleus and returns orthodromically down the same axon. We measured the AMRs and F-waves of facial muscles in HFS patients in order to investigate the relationship of both potentials and the origin of the AMRs. We obtained facial nerve evoked electromyograms from 10 HFS patients. The afterdischarges of the AMRs and the enhanced F-waves were always elicited at the same time by marginal mandibular branch stimulation of the facial nerve. There was a linear correlation between the duration of these two potentials in each case. Between the duration of the afterdischarge of the AMRs elicited in the mentalis muscles by the zygomatic branch stimulation of the facial nerve and that of the F-waves in the mentalis muscles, there was also a linear correlation in 10 cases. These results suggest that the F-wave and the afterdischarge have the same origin acid that the AMR is an exaggerated F-wave.