Evaluation of acoustic shock induced early hearing loss with audiometer and distortion product otoacoustic emissions.
Indian J Med Sci
;
2010 Mar; 64(3) 132-139
Artigo
em Inglês
| IMSEAR
| ID: sea-145498
ABSTRACT
Background:
Acoustic shock injury has been described as a permanent injury to the auditory system either due to daily noise dose of in excess of 85 decibels or very loud impulse sound reputed to be in excess of 120 decibels and acoustic incidents. This study was performed to compare the results of audiogram and the newer diagnostic method distortion product otoacoustic emissions (DPOAEs) parameters due to acoustic shock injury in call center professionals working in a noisy environment and prone to acoustic injury. Materials andMethods:
Hearing functions of 340 subjects were first assessed with pure tone audiometry and then DPOAEs results were compared among acoustic shock exposed subjects with normal audiogram and those with abnormal audiogram.Results:
Out of 340 acoustic shock exposed subjects 304 were normal on audiometric testing and 34 had abnormal audiograms. Subsequently on DPOAE testing out of 304 acoustic shock exposed subjects with normal audiogram 125 failed and 181 passed.Conclusions:
This study showed that DPOAEs are more sensitive than audiometry to detect pre-symptomatic inner ear damage. It may play a role as screening and monitoring test for acoustic shock-exposed workers.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Audiometria
/
Humanos
/
Emissões Otoacústicas Espontâneas
/
Serviços de Atendimento
/
Perda Auditiva Provocada por Ruído
/
Ruído Ocupacional
Idioma:
Inglês
Revista:
Indian J Med Sci
Ano de publicação:
2010
Tipo de documento:
Artigo
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