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pp.93-95
Published Date 1952/3/20
DOI https://doi.org/10.11477/mf.1492200623

ONCHI presents a new hearing test by which differential diagnosis between otosclerosis and nerve deafness can be readily made. His method consists of measuring the difference in bone conduction shreshold when the auditory canal is blocked with a plastic plug and when it is open which are tested under two frequencies 256 or 250 and 800 cycles. In otosclerosis no difference will be found but, in nerve deafness, the difference will be consistently more 100 db apart. The author recommends the method as a convenient test for diagnosis of otosclerosis.


Copyright © 1952, 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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