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Findings of Intraoperatiye Monitoring of Auditory Brainstem Response (ABR) in a Case of Brainstem Hemangioma Masato Yokoyama 1 1Department of Otolaryngology, Faculty of Medicine, University of Tokyo pp.51-55
Published Date 1990/1/20
DOI https://doi.org/10.11477/mf.1411900008
  • Abstract
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A 34-year-old male underwent a surgical remo-val of hemangioma in the pons. Preoperative ABR revealed increases in interpeak latences (IPL) of left I-III and bilateral III-V waves, and abno-rmally separated bilateral IV/V waves. Infra-operatively, ABR became unstable and waves of IV and V disappeared just after pontine incision. However, all waves of ABR could be detected at the end of operation. Postoperatively, prolongations of IPL decreased bilaterally, and separation of IV/V waves became improved in both ears. Intraoperative monitoring of ABR could state that the hearing acuity and brainstem function were preserved in spite of pontine surgery.


Copyright © 1990, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1316 印刷版ISSN 0914-3491 医学書院

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