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Type: Artigo de periódico
Title: Exposure To Occupational Noise: Otoacoustic Emissions Test Alterations [exposição Ao Ruído Ocupacional: Alterações No Exame De Emissões Otoacústicas]
Author: Marques F.P.
Da Costa E.A.
Abstract: Exposure to occupational noise may cause injuries to the inner ear, and the distortion product otoacoustic emissions (DPOAE) may identify initial auditory alterations, thus assisting NIHL early diagnosis. Aim: The goal of this study was to evaluate DPOAE as a method to diagnose early physiopathological alterations caused by occupational noise exposure. Study Design: Transversal. Methods: 74 workers of the University of São Paulo, in the capital city of the State, participated in this investigation. They were divided in two age-matched groups and with tonal audiometric values within the acceptable limits: 37 were exposed to occupational noise and 37 were not exposed. Results: Risk estimates (Odds Ratio) of absent DPOAE was 12 fold higher for the group exposed to occupational noise (CI 95% 3.1 - 45.9), in the frequencies of 3. 4 and 6 kHz. Conclusions: DPOAE may be useful in the identification of physiopathological hearing alterations caused by exposure to occupational noise, even in individuals with tonal audiometric responses within acceptable limits.
Rights: aberto
Identifier DOI: 
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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