ディスコティック・サウンドによると思われる急性感音難聴の4症例

Four Cases of Acute Sensorineural Hearing Loss due to Discotheque Sound

　I．はじめに

　強大音負荷により引き起こされる聴力障害，すなわち，いわゆる音響外傷症例の経験は，日常診療上，まれなものではないが，我々は最近，特にディスコティック・サウンドの暴露がきっかけとして引き起こされたと思われる急性感音難聴の4症例を経験した。これらの症例はその発生時の状態に共通因子を認め得るとともに，従来の音響外傷およびnoise induced sudden deafnessの範疇に当てはまらないため，若干の文献的考察を加えて報告する。

　Four patients developed hearing loss suddenly after dancing for about half an hour in a discotheque.

　The hearing impairment might have occured by being exposed to loudly amplified rock and roll music. Audiogram of the hearing impairment resembled to that of noise induced sudden deafness, of genuine sudden deafness and of the acoustic trauma, partially.

　We concluded that they should keep away from being exposed to loud sound in such discotheques or rock and roll concerts when they had drunk or were too tired.