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Year : 1999  |  Volume : 1  |  Issue : 2  |  Page : 50--57

Comparing changes in transient-evoked otoacoustic emission and pure-tone audiometry following short exposure to industrial noise

Department of Physical Hazards, Institute of Occupational Medicine, Lódz, Poland

Correspondence Address:
Mariola Sliwinska-Kowalska
Department of Physical Hazards, Institute of Occupational Medicine, ul. Sw. Teresy 8 90-950 Lódz
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Source of Support: None, Conflict of Interest: None

PMID: 12689508

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It has been suggested that otoacoustic emissions, particularly transient-evoked otoacoustic emissions (TEOAE), might be more sensitive in assessment of changes to the cochlea caused by noise than pure-tone audiometry (PTA). The aim of the study was to compare temporary threshold shifts with the changes in TEOAE following a six-hour exposure to industrial noise at the intensity of 85-97 dB (A). Thirty two male employees of a metal factory were screened. TEOAE, PTA and tympanometry were included in the hearing test battery. Both, PTA and TEOAE showed significant reduction due to noise exposure, but no correlation between temporary threshold shifts and decreases in either the overall TOAE level or the level of otoacoustic emission in the frequency bands was found. Our results confirm the high sensitivity of TEOAE to short exposure to industrial noise. This study may recommend this measurement as a method of evaluation for TTS conditions for hearing conservation programme purposes, in addition to pure-tone audiometry.


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