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pp.866-873
Published Date 1958/11/20
DOI https://doi.org/10.11477/mf.1492202111

The results of audiometry, using JIS stan-dardized instrument, conducted in an ordinary room of 50 to 60 phon noise on one hand, and in a noise-proof room of 20 to 30 phon noise on the other, are compared. The material of the study consisted of patients who were un-der treptomycin therapy of bi-weekly admi-nistration. It is revealed that if the audio-metric tests, even though they are conducted in an ordinary room of 50 to 60 phon noise, were to be continued for the period of 3 to 5 months in duration the capability in detection of streptomycin-deafness will not be decrea-sed. Among about 200 cases observed the inci-dence of streptomycin-deafness appeared to be 1% involvement. There seemed to be two ty-pes of involvement in streptomycin-deafness, one in which the patient Will be affected with rapid onset of deafness that may even include the low-tone area, when the total amount of streptomycin administered might be 10 grams or less, and, the other the deaf-ness may be limited to high tone areas alo-ne, when the administration reaches 50 g or over.


Copyright © 1958, 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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