Mechanism of Hearing Disturbance after Microvascular Decompression

Takayuki Ohira; Shigeo Toya; Yoshiki Nakamura; Hiromichi Mlyazaki; Masashi Nakatsukasa; Yukio Ibata; Takeshi Kawase; Jin Kanzaki; Moriichirou Takase

doi:10.2176/nmc.27.749

Mechanism of Hearing Disturbance after Microvascular Decompression

Takayuki Ohira, Shigeo Toya, Yoshiki Nakamura, Hiromichi Mlyazaki, Masashi Nakatsukasa, Yukio Ibata, Takeshi Kawase, Jin Kanzaki, Moriichirou Takase

Department of Neurosurgery

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

In 35 posterior fossa operations with intraoperative brain-stem auditory evoked potential (BAEP) monitoring, there were seven microvascular decompression (MVD) operations performed for five cases of hemifacial spasm and two of trigeminal neuralgia. Among these seven patients, three cases, two of hemifacial spasm and one of trigeminal neuralgia, showed postoperative hearing disturbance. In these cases, intraoperative BAEPs showed aggravations of all waveform components including wave I. Otoneurological examinations revealed the hearing disturbances were caused not only by retrocochlear lesions but also by cochlear lesions. These findings suggest that postoperative hearing disturbance after MVD surgery is deeply related to circulatory disturbance of the internal auditory artery.

Original language	English
Pages (from-to)	749-755
Number of pages	7
Journal	Neurologia medico-chirurgica
Volume	27
Issue number	8
DOIs	https://doi.org/10.2176/nmc.27.749
Publication status	Published - 1987

Keywords

auditory evoked potentials
auditory nerve
hearing loss
internal auditory artery
microvascular decompression

ASJC Scopus subject areas

Surgery
Clinical Neurology

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10.2176/nmc.27.749

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title = "Mechanism of Hearing Disturbance after Microvascular Decompression",

abstract = "In 35 posterior fossa operations with intraoperative brain-stem auditory evoked potential (BAEP) monitoring, there were seven microvascular decompression (MVD) operations performed for five cases of hemifacial spasm and two of trigeminal neuralgia. Among these seven patients, three cases, two of hemifacial spasm and one of trigeminal neuralgia, showed postoperative hearing disturbance. In these cases, intraoperative BAEPs showed aggravations of all waveform components including wave I. Otoneurological examinations revealed the hearing disturbances were caused not only by retrocochlear lesions but also by cochlear lesions. These findings suggest that postoperative hearing disturbance after MVD surgery is deeply related to circulatory disturbance of the internal auditory artery.",

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T1 - Mechanism of Hearing Disturbance after Microvascular Decompression

AU - Ohira, Takayuki

AU - Toya, Shigeo

AU - Nakamura, Yoshiki

AU - Mlyazaki, Hiromichi

AU - Nakatsukasa, Masashi

AU - Ibata, Yukio

AU - Kawase, Takeshi

AU - Kanzaki, Jin

AU - Takase, Moriichirou

PY - 1987

Y1 - 1987

N2 - In 35 posterior fossa operations with intraoperative brain-stem auditory evoked potential (BAEP) monitoring, there were seven microvascular decompression (MVD) operations performed for five cases of hemifacial spasm and two of trigeminal neuralgia. Among these seven patients, three cases, two of hemifacial spasm and one of trigeminal neuralgia, showed postoperative hearing disturbance. In these cases, intraoperative BAEPs showed aggravations of all waveform components including wave I. Otoneurological examinations revealed the hearing disturbances were caused not only by retrocochlear lesions but also by cochlear lesions. These findings suggest that postoperative hearing disturbance after MVD surgery is deeply related to circulatory disturbance of the internal auditory artery.

AB - In 35 posterior fossa operations with intraoperative brain-stem auditory evoked potential (BAEP) monitoring, there were seven microvascular decompression (MVD) operations performed for five cases of hemifacial spasm and two of trigeminal neuralgia. Among these seven patients, three cases, two of hemifacial spasm and one of trigeminal neuralgia, showed postoperative hearing disturbance. In these cases, intraoperative BAEPs showed aggravations of all waveform components including wave I. Otoneurological examinations revealed the hearing disturbances were caused not only by retrocochlear lesions but also by cochlear lesions. These findings suggest that postoperative hearing disturbance after MVD surgery is deeply related to circulatory disturbance of the internal auditory artery.

KW - auditory evoked potentials

KW - auditory nerve

KW - hearing loss

KW - internal auditory artery

KW - microvascular decompression

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Mechanism of Hearing Disturbance after Microvascular Decompression

Abstract

Keywords

ASJC Scopus subject areas

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