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Document ID (ISN)65598
CIS number 95-2237
ISSN - Serial title Journal of Otolaryngology of Japan
Year 1992
Convention or series no.
Author(s) Ohgaki T., Nigauri T., Okubo J., Komatsuzaki A.
Title Exostosis of the external auditory canal and sensorineural hearing loss in professional divers
Original title Shokugyō daiba ni mirareta ji shikkan-gaiji dō gai kotsushu to kan'on'sei nanchō ni tsuite [in Japanese]
Bibliographic information 20 Sep. 1992, Vol.95, No.9, p.1323-1331. Illus. 20 ref.
Abstract Audiometry and endoscopic examination of the external auditory canal were performed on the 31 professional divers of a fishing cooperative, who were frequently exposed to dysbaric conditions. Over 40% of the subjects had exostosis (projections of bony tissue in the canal). Over 70% had sensorineural hearing loss, even when audiometric data were corrected for aging. Hearing loss increased with the number of years spent in diving. Few of the subjects had experienced inner ear barotrauma on descent. It is proposed that the frequent small changes of pressure occurring in the outer ear are transmitted to the middle ear and perilymph, which eventually damages the inner ear.
Descriptors (primary) hyperbaric pressure; Japan; long-term exposure; exostosis; hearing loss; diving
Descriptors (secondary) audiometric tests; fishing
Document type D - Periodical articles
Country / State or ProvinceJapan
Subject(s) Noise, hearing and vibration
Broad subject area(s) Physical hazards
Browse category(ies) Diseases of the musculoskeletal system
Hyperbaric pressure
Diseases of the ear and hearing damage