AUDIOLOGY JAPAN
Online ISSN : 1883-7301
Print ISSN : 0303-8106
ISSN-L : 0303-8106
Idiopathic Bilateral Sensorineural Hearing Loss (IBSH) and Aging
Makito Okamoto
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1996 Volume 39 Issue 2 Pages 122-129

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Abstract

The purpose of this study was to investigate and predict the aging effect on the hearing level of patients with IBSH. The initial and final hearing levels of 110 patients with IBSH were obtained. The average observation period was 10 years. As a control, hearing test results were also obtained from 1377 adult subjects, who had neither the history of ear diseases nor noise exposure. Within the period of 10 years, the hearing level of the patients with IBSH deteriorated. The extent of deterioration did not vary depending on generations or test frequencies. The scattergram obtained from the result of the initial and final hearing levels suggested that the trigger of hearing deterioration in patients with IBSH was related to a certain hearing level rather than the aging factor. Based on the analysis of hearing distribution, it was assumed that the damaged area of the inner ear of patients with IBSH and with hearing impairment due to aging might be identical. Since these subjects share the same pathology, hearing deterioration due to aging might be concealed by hearing deterioration related to IBSH.

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© Japan Audiological Society
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