title: Amplitude changes in otoacoustic emissions after exposure to industrial noise.
abstract: 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.
authors.affiliation: Department of Occupational Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
authors.forename: Mohammad Hossein
authors.initials: MH
authors.lastname: Baradarnfar
authors.forename: Kayvan
authors.initials: K
authors.lastname: Karamifar
authors.forename: Amir Houshang
authors.initials: AH
authors.lastname: Mehrparvar
authors.forename: Abolfazl
authors.initials: A
authors.lastname: Mollasadeghi
authors.forename: Marjan
authors.initials: M
authors.lastname: Gharavi
authors.forename: Ghasem
authors.initials: G
authors.lastname: Karimi
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Vahidy
authors.forename: Amin
authors.initials: A
authors.lastname: Baradarnfar
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Mostaghaci
mesh_terms: D000328:Adult; D001301:Audiometry, Pure-Tone; D016009:Chi-Square Distribution; D003430:Cross-Sectional Studies; D006317:Hearing Loss, Noise-Induced / Q000175:diagnosis* / Q000503:physiopathology*; D006801:Humans; D007221:Industry; D007492:Iran; D008297:Male; D009623:Noise, Occupational / Q000009:adverse effects*; D017084:Otoacoustic Emissions, Spontaneous / Q000502:physiology*