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Auditory Brainstem Response: ABR Yasushi MOTOYAMA 1 1Department of Neurosurgery, Osaka Police Hospital Keyword: 聴性脳幹反応 , ABR , 術中モニタリング , 聴力 , 微小血管減圧術 , 小脳橋角部腫瘍 , auditory brainstem response , intraoperative monitoring , hearing , microvascular decompression , cerebellopontine angle tumor pp.425-429
Published Date 2023/5/10
DOI https://doi.org/10.11477/mf.1436204766
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 Intraoperative auditory brainstem response(ABR)monitoring has been established as a reliable method to evaluate cochlear function. Intraoperative ABR is mandatory in microvascular decompression for hemifacial spasm, trigeminal neuralgia, and glossopharyngeal neuralgia. Cerebellopontine tumor with remaining effective hearing function also requires ABR monitoring during surgery to preserve hearing function. Prolonged latency and subsequent amplitude decrease in the ABR wave Ⅴ predicts postoperative hearing impairment. Therefore, when alerted to an intraoperative ABR during surgery, the surgeon should release the cerebellar retraction stressing the cochlear nerve and wait for the abnormal ABR to recover.


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

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