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Asymmetry of Occupational Noise Induced Hearing Loss: An Electrophysiological Approach

Introduction  The question as to whether occupational noise exposure causes symmetrical or asymmetrical hearing loss is still controversial and incompletely understood. Objective  Two electrophysiological methods (cortical evoked response audiometry: CERA and auditory steady state responses: ASSR) w...

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Autores principales: DeJonckere, Philippe Henri, Lebacq, Jean
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Thieme Revinter Publicações Ltda. 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10411239/
https://www.ncbi.nlm.nih.gov/pubmed/37564477
http://dx.doi.org/10.1055/s-0042-1750766
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author DeJonckere, Philippe Henri
Lebacq, Jean
author_facet DeJonckere, Philippe Henri
Lebacq, Jean
author_sort DeJonckere, Philippe Henri
collection PubMed
description Introduction  The question as to whether occupational noise exposure causes symmetrical or asymmetrical hearing loss is still controversial and incompletely understood. Objective  Two electrophysiological methods (cortical evoked response audiometry: CERA and auditory steady state responses: ASSR) were used to address this issue. Method  156 subjects with a well-documented history of noise exposure, a wide range of noise induced hearing loss (NIHL) and without middle ear pathology underwent both a CERA and an ASSR examination in the context of an exhaustive medicolegal expert assessment intended for possible compensation. Results  Whatever the method (CERA or ASSR), the average electrophysiological hearing thresholds (1-2-3 kHz) are significantly worse in the left ear. The right - left differences in CERA and ASSR thresholds are strongly correlated with each other. No significant effect of frequency is found. No correlation is observed between right - left differences in hearing thresholds and either age or degree of hearing loss. Conclusion  In NIHL, there is an actual average right - left difference of about 2.23 dB, i.e., 3.2%, the left ear being more impaired.
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spelling pubmed-104112392023-08-10 Asymmetry of Occupational Noise Induced Hearing Loss: An Electrophysiological Approach DeJonckere, Philippe Henri Lebacq, Jean Int Arch Otorhinolaryngol Introduction  The question as to whether occupational noise exposure causes symmetrical or asymmetrical hearing loss is still controversial and incompletely understood. Objective  Two electrophysiological methods (cortical evoked response audiometry: CERA and auditory steady state responses: ASSR) were used to address this issue. Method  156 subjects with a well-documented history of noise exposure, a wide range of noise induced hearing loss (NIHL) and without middle ear pathology underwent both a CERA and an ASSR examination in the context of an exhaustive medicolegal expert assessment intended for possible compensation. Results  Whatever the method (CERA or ASSR), the average electrophysiological hearing thresholds (1-2-3 kHz) are significantly worse in the left ear. The right - left differences in CERA and ASSR thresholds are strongly correlated with each other. No significant effect of frequency is found. No correlation is observed between right - left differences in hearing thresholds and either age or degree of hearing loss. Conclusion  In NIHL, there is an actual average right - left difference of about 2.23 dB, i.e., 3.2%, the left ear being more impaired. Thieme Revinter Publicações Ltda. 2023-03-29 /pmc/articles/PMC10411239/ /pubmed/37564477 http://dx.doi.org/10.1055/s-0042-1750766 Text en Fundação Otorrinolaringologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. ( https://creativecommons.org/licenses/by-nc-nd/4.0/ ) https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.
spellingShingle DeJonckere, Philippe Henri
Lebacq, Jean
Asymmetry of Occupational Noise Induced Hearing Loss: An Electrophysiological Approach
title Asymmetry of Occupational Noise Induced Hearing Loss: An Electrophysiological Approach
title_full Asymmetry of Occupational Noise Induced Hearing Loss: An Electrophysiological Approach
title_fullStr Asymmetry of Occupational Noise Induced Hearing Loss: An Electrophysiological Approach
title_full_unstemmed Asymmetry of Occupational Noise Induced Hearing Loss: An Electrophysiological Approach
title_short Asymmetry of Occupational Noise Induced Hearing Loss: An Electrophysiological Approach
title_sort asymmetry of occupational noise induced hearing loss: an electrophysiological approach
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10411239/
https://www.ncbi.nlm.nih.gov/pubmed/37564477
http://dx.doi.org/10.1055/s-0042-1750766
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