PMID: 9187006Jan 1, 1997Paper

Impulse noise and acute acoustic trauma in Finnish conscripts. Number of shots fired and safe distances

Scandinavian Audiology
Seppo Savolainen, K M Lehtomäki

Abstract

This prospective study of acute acoustic trauma (AAT) from exposure to impulse noise during compulsory military service focused on three issues the number of shot or explosion impulses that the conscript was exposed to at the time of AAT, distance of injured ear from causal firearm, and the circumstances under which AAT occurred protected ears. The series includes 449 consecutive, verified cases of AAT seen at the Central Military Hospital in Helsinki, Finland, in the period 1989-1993. AAT usually occurred during combat training (87%) as a result of exposure to impulses from small arms (83%). In 41%. AAT was caused by a single shot or detonation impulse. As many as 92% of all AATs occurred within 2 m of the causal firearm. Fourteen percent were wearing hearing protectors when the accident took place, but every third had badly fitting protectors or had neglected safety regulations and used insufficient protection. Of all AATs caused by one noise impulse in protected ears. 83% were attributable to heavy arms and only 14% to small arms. The results of the study suggest that combined use of earmuffs and earplugs in association with a safe distance of over 5 m from the noise source gives adequate protection against AAT. However, for...Continue Reading

References

Jan 1, 1992·The Journal of the Acoustical Society of America·J O PekkarinenJ S Ylikoski
Oct 1, 1991·American Industrial Hygiene Association Journal·R PääkkönenE Hämäläinen
May 1, 1973·The Journal of the Acoustical Society of America·H McRobert, W D Ward
Jan 1, 1996·Scandinavian Audiology·S Savolainen, K M Lehtomäki

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Citations

Sep 16, 2005·Accident; Analysis and Prevention·Ville M MattilaHarri Pihlajamäki
Feb 13, 2013·International Journal of Audiology·Deanna K MeinkeMichael Stewart
Jun 25, 2015·Safety and Health at Work·Kyaw N WinAlice Lai
Dec 20, 2016·Noise & Health·Doris R Medina-GarinRemy Michel
Jun 17, 2008·Otolaryngologia polska. The Polish otolaryngology·Jarosław Miłoński, Jurek Olszewski

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