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pp.132-134
Published Date 1955/3/20
DOI https://doi.org/10.11477/mf.1492201289

 HORI Proposes a new method of making a differential diagnosis of deafness, the conductive and perceptive, which in reality is a modification of that method described by Onchi. The bone conduction hearing test is first made of the test ear ; which is followed by a second test that consists of using an external canal obturator constructed especially for this purpose with a plastic material. The hearing test is made with bone conductor placed in contact with this obturator in place in the external canal. The difference of 40db or over by these two ests indicates perceptive deafness, while, that which is less than 40 may indicate that is mixed in type.


Copyright © 1955, 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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