雑誌文献を検索します。書籍を検索する際には「書籍検索」を選択してください。

検索

書誌情報 詳細検索 by 医中誌

Japanese

Facial Nerve Motor Evoked Potentials Elicited by Transcranial Electrical Stimulation for Intraoperative Monitoring Masafumi FUKUDA 1 , Makoto OISHI 1 , Akihiko SAITO 1 , Tetsuro TAKAO 1 , Yukihiko FUJII 1 1Department of Neurosurgery, Brain Research Institute, University of Niigata Keyword: facial nerve , intraoperative monitoring , motor evoked potential , skull base tumor , vestibular schwannoma pp.315-321
Published Date 2008/4/10
DOI https://doi.org/10.11477/mf.1436100719
  • Abstract
  • Look Inside
  • Reference

 Objective To determine whether monitoring facial nerve motor evoked potentials (FNMEPs) elicited by transcranial electrical stimulation during skull base tumor surgery is useful for predicting facial nerve outcome.

 Methods We analyzed FNMEP findings in 31 patients with skull base tumor. Surgery was performed twice in 2 of the 31 patients because of tumor regrowth. FNMEP monitoring was conducted 33 times in the present study. Corkscrew electrodes positioned at C3 or C4 and Cz were used to deliver supramaximal stimuli (140-550V). FNMEPs were recorded from the orbicularis oculi and oris muscles. Correlation between the final-to-baseline FNMEP ratio and postoperative facial nerve function (House & Brackmann grade) was examined.

 Results Valid FNMEPs were obtained in 26 of the 33 (78.8%) recordings from the orbicularis oculi muscle and in 31 of the 33 (93.9%) recordings from the orbicularis oris muscle. Facial nerve function correlated significantly with the FNMEP ratios in the orbicularis oculi (r=-0.52, N=26, p<0.01) and orbicularis oris (r=-0.60, N=31, p<0.001) muscles. An FNMEP ratio of -50% consistently predicted immediate postoperative facial palsy, although the degree of palsy differed among the patients.

 Conclusions Intraoperative FNMEP monitoring is useful for predicting facial nerve function after skull base surgery.


Copyright © 2008, Igaku-Shoin Ltd. All rights reserved.

基本情報

電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

関連文献

もっと見る

文献を共有