Amplitude changes in otoacoustic emissions after exposure to industrial noise

Noise-induced hearing loss (NIHL) is a frequent problem in industrial settings, especially where a high noise level is present. It is permanent, and irreversible, but preventable. Routine audiometry (an objective and time consuming) test is used for NIHL screening. Otoacoustic emissions (OAEs) are r...

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Bibliographic Details
Published in:	Noise & health Vol. 14; no. 56; pp. 28 - 31
Main Authors:	Baradarnfar, Mohammad Hossein, Karamifar, Kayvan, Mehrparvar, Amir Houshang, Mollasadeghi, Abolfazl, Gharavi, Marjan, Karimi, Ghasem, Vahidy, Mohammad Reza, Baradarnfar, Amin, Mostaghaci, Mehrdad
Format:	Journal Article
Language:	English
Published:	India Medknow Publications and Media Pvt. Ltd 01-01-2012 Medknow Publications & Media Pvt. Ltd Wolters Kluwer Medknow Publications
Subjects:	Adult Audiometry, Pure-Tone Chi-Square Distribution Cross-Sectional Studies Distortion-product otoacoustic emission Ears & hearing Health aspects Hearing loss Hearing Loss, Noise-Induced - diagnosis Hearing Loss, Noise-Induced - physiopathology Hearing protection Humans Industrial noise Industry Iran Male Noise Noise levels Noise pollution Noise, Occupational - adverse effects noise-induced hearing loss Occupational exposure Occupational health and safety Occupational safety Otoacoustic Emissions, Spontaneous - physiology pure tone audiometry Risk factors transient-evoked otoacoustic emission Iran United States
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Summary:	Noise-induced hearing loss (NIHL) is a frequent problem in industrial settings, especially where a high noise level is present. It is permanent, and irreversible, but preventable. Routine audiometry (an objective and time consuming) test is used for NIHL screening. Otoacoustic emissions (OAEs) are recently proposed as a more sensitive test for early diagnosis of NIHL. In this study, we aimed to compare the results of pure tone audiometry (PTA) with OAE in the diagnosis of NIHL. In a cross-sectional study on 120 workers (in three groups: Not exposed to noise, exposed to noise without NIHL and exposed to noise with NIHL), we compared the results of PTA and OAE. OAE can detect some changes in the function of hearing system in subjects exposed to noise, and these changes are apparently prior to hearing loss, which is diagnosed by PTA. OAE is a more sensitive method for the early diagnosis of cochlear damage than PTA, and can be performed in industrial settings for NIHL screening.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	1463-1741 1998-4030
DOI:	10.4103/1463-1741.93329