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pp.625-629
Published Date 1963/8/20
DOI https://doi.org/10.11477/mf.1492203089

 To what effect the noise trauma may have on the ear which is already affected with conduction hearing loss is studied on 8 selected cases. These were affected with hard of hearing from exposure to noise in whom there were preestablished loss of hearing in one ear from previous history of otitis media. In 4 cases the loss was negative when measured by the standard of airbone gap and bone conduction; in 3 cases the apparent loss appeared to be somewhat defensive in character; in 1 case alone the effect seemed to be porgressively active. Due to the fact that there are numerous causes entering into this condition which would make it premature to drow any conclusion from the results of these few cases. Further study of this subject is highly desirable.


Copyright © 1963, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 印刷版ISSN 0386-9679 医学書院

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