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pp.671-674
Published Date 1959/9/20
DOI https://doi.org/10.11477/mf.1492202306

 Operation audiometry is the term applied to a type of hearing test which is a requisite in tyrr, panoplasty. Employing Schall sound definitive diagnosis of conductive disturbances is established. By Bennet's disrupted ossicular chain test the majority of cases showed atypical types of disturbances which were quite in agreement with what Lundborg calls as acoustically "short circuit": these cases by operative observations seem to agree with Gehor's so-called cholesteatoma. The disturbances in the middle ear ossicular chain by definitive diagnosis may divided into those that are (a) nomal, (b) short circuit and (c) disrupted chain. By employment of the sound functional test of the round window also may be conducted.


Copyright © 1959, 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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