Hearing loss in workers exposed to different type of noise

Zamyslowska-Szmytke, E., Kotylo, P., Bak, M., Fuente, A. and Sliwinska-Kowalska, M. (2007). Hearing loss in workers exposed to different type of noise. In: XIV International Conference Noise Control '07. 14th International Conference on Noise Control, Elblag, Poland, (399-404). 3 - 6 June 2007.

Author Zamyslowska-Szmytke, E.
Kotylo, P.
Bak, M.
Fuente, A.
Sliwinska-Kowalska, M.
Title of paper Hearing loss in workers exposed to different type of noise
Conference name 14th International Conference on Noise Control
Conference location Elblag, Poland
Conference dates 3 - 6 June 2007
Proceedings title XIV International Conference Noise Control '07   Check publisher's open access policy
Journal name Archives of Acoustics   Check publisher's open access policy
Place of Publication Warsaw, Poland
Publisher Polska Akademia Nauk
Publication Year 2007
Sub-type Fully published paper
ISSN 0137-5075
Volume 32
Issue 2
Start page 399
End page 404
Total pages 6
Language eng
Abstract/Summary It's well documented that noise damages peripheral part of the auditory tract (cochlea). Only few investigations were performed to assess central hearing disturbances caused by noise on animal. The aim of the study was to evaluate the site of hearing damage in 2 groups of individuals exposed to different types of noise. First group consisted of 62 dockyard workers exposed to impulsive noise with co-exposure to hand-arm vibration while second group included 76 bottle glass factory workers exposed to continuous steady-state noise. Results were referred to 86 control subjects exposed neither to noise nor vibrations. Pure-tone audiometry, immitance audiometry, Auditory Brainstem Response (ABR) and cognitive-event relate auditory evoked potentials (wave P-300) were performed in all subjects. Audiometric results revealed the poorest hearing level in dockyard workers among all groups. The bottle factory workers had also significant hearing impairment at high frequencies as compared to controls. Although the wave V at the ABR was prolonged in the dockyard workers this change could reflect sensorineural hearing thresholds shift and retrocochlear damage. The latency of P-300 wave was prolonged in dockyard workers exclusively suggesting a cortical effect of exposure to impulsive noise. Conclusions. Exposure to high level impulsive noise in combination with hand-arm vibration may cause hearing deficit greater than expected. Abnormalities involve peripheral and central auditory system. More observations are necessary to confirm these findings.
Keyword Pure-tone audiometry
Immitance audiometry
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Conference Paper
Collection: School of Health and Rehabilitation Sciences Publications
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