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Intraoperative Monitoring of the Lower Cranial Nerves during Skull Base Surgery:Evoked myographic technique Tetsuji SEKIYA 1 , Toru HATAYAMA 1 , Kenichi AKASAKA 1 , Shigeharu SUZUKI 1 1Department of Neurosurgery, Hirosaki University School of Medicine Keyword: Intraoperative monitoring , Lower cranial nerves pp.491-496
Published Date 1995/6/10
DOI https://doi.org/10.11477/mf.1436901032
  • Abstract
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Functional preservation of the lower cranial nerves is an important issue in the surgery of the skull base to avoid postoperative serious complications such as aspiration pneumonia and respiratory disorders.

We presented our experience of intraoperative moni-toring of the lower cranial nerves during skull base surgery. The evoked electromyographic (EMG) activi-ties were successfully recorded from the muscles inner-vated by the lower cranial nerves. These EMG record-ings are helpful to guide the surgeon intraoperatively and to avoid careless severing of these nerves.

Although the glossopharyngeal nerve that innervates only one small muscle in the pharynx (M. stylopharyn-geus) cannot be monitored with the evoked EMG tech-nique described in this paper, the position of this nerve can be deduced from the position of the vagus nerve.


Copyright © 1995, Igaku-Shoin Ltd. All rights reserved.

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

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