Monitoring of facial evoked EMG for hemifacial spasm: a critical analysis of its prognostic value.

Abstract:

:Microvascular decompression (MVD) has come to stay as an effective way of treating hemifacial spasm. But it remains to be seen how much each of the electrophysiological monitoring techniques (intra-operative) are contributing to its increased efficacy. Their role as indicators for re-exploration or recurrence is to be evaluated with more studies. We have used the lateral spread response in those patients who had distinctly abnormal recording on the ipsilateral side, studied the intra-operative changes during MVD and correlated with the outcome of surgery. 38 patients operated for HFS, were selected for intra-operative monitoring of abnormal muscle responses. In 17 patients, there was persistence of abnormal muscle responses in the immediate postoperative period and only 6 of them had mild HFS. Two of 21 patients who had disappearance of abnormal responses had persistent mild HFS; but in all cases, the HFS disappeared within 3 months. So we found that the intra-operative recording was really not reliable in predicting the immediate postoperative outcome. However the outcome at 3 months suggested that waiting for some time before re-exploration is a better option, especially if the HFS had become mild.

journal_name

Acta Neurochir (Wien)

journal_title

Acta neurochirurgica

authors

Kiya N,Bannur U,Yamauchi A,Yoshida K,Kato Y,Kanno T

doi

10.1007/s007010170091

subject

Has Abstract

pub_date

2001-01-01 00:00:00

pages

365-8

issue

4

eissn

0001-6268

issn

0942-0940

journal_volume

143

pub_type

临床试验,杂志文章
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    pub_type: 杂志文章,随机对照试验

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  • Rat middle cerebral artery occlusion using an intraluminal thread technique.

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    pub_type: 杂志文章

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    pub_type: 杂志文章

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    doi:10.1007/BF01411438

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  • The hyperaemic response to a transient reduction in cerebral perfusion pressure. A modelling study.

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