Recent developments in firearms noise and hearing conservation: hearing protection fit testing, Noise measurement and hearing surveillance

McBride, David, Baxter, Marian, Fletcher, Dion and Lalahi, Karoline (2013). Recent developments in firearms noise and hearing conservation: hearing protection fit testing, Noise measurement and hearing surveillance. In: 2012 AMMA Conference, Brisbane, QLD, Australia, (7-13). 12-14 October 2012.

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Author McBride, David
Baxter, Marian
Fletcher, Dion
Lalahi, Karoline
Title of paper Recent developments in firearms noise and hearing conservation: hearing protection fit testing, Noise measurement and hearing surveillance
Conference name 2012 AMMA Conference
Conference location Brisbane, QLD, Australia
Conference dates 12-14 October 2012
Journal name Journal of Military and Veterans' Health   Check publisher's open access policy
Place of Publication Hobart, TAS, Australia
Publisher Australasian Military Medicine Association
Publication Year 2013
Sub-type Fully published paper
Open Access Status File (Publisher version)
ISSN 1835-1271
1839-2733
Volume 21
Issue 1
Start page 7
End page 13
Total pages 7
Collection year 2014
Formatted Abstract/Summary
Background: Noise induced hearing loss (NIHL) continues to be a prevalent problem in Military Service.

Purpose: 
To assess the 'SureFire' earplug, a hearing protective device (HPD), within the context of a hearing conservation programme.

Methods: The 'VeriPro' system was used to test the HPD attenuation, with otoacoustic emission (OAE) 'baseline' hearing tests. Noise exposure was measured during test firing, and a post exposure OAE test was carried out to measure any deterioration in hearing due to excess noise exposure.

Results: Better attenuation was achieved in right ears. The HPDs were rated to reduce the noise by at least 15 dB in 84% of those exposed, the actual attenuation lying in the range between 8.4 and 23.6 dBA. The median noise level was 110 dBA. The OAE testing did not show any significant before and after differences.

Discussion: Some individuals achieved good HPD fit, some quite poor. The average noise levels received were excessive, but the daily noise dose was within acceptable limits because of the short duration of exposure, possibly explaining the non-significant differences in OAEs. We recommend that individuals should only use HPDs which are 'fit proven'. Additional testing under more typical conditions with a larger group is required, but OAEs show promise as a practical monitoring tool. 
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes DOAJ Journal

Document type: Conference Paper
Collections: Official 2014 Collection
School of Public Health Publications
 
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Created: Thu, 28 Nov 2013, 16:07:55 EST by System User on behalf of Centre for Australian Military & Veterans' Health