Emissões otoacústicas em trabalhadores gráficos expostos a ruído

• Autor(a) principal: Oliveira, Beatriz Porto de
• Data de Publicação: 2009
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da PUC_SP
• Texto Completo: https://tede2.pucsp.br/handle/handle/12221
• topic: PAIR; Ruído; Emissoes otoscusticas; Perda auditiva provocada por ruido; Ruido ocupacional; Otoacoustic emissions; Noise-induced hearing loss; Noise; CNPQ::CIENCIAS DA SAUDE::FONOAUDIOLOGIA

INTRODUCTION: The otoacustic emissions (OAE) represents an important instrument for epidemiological surveillance of auditory alterations decurrent of noise exposition. OBJECTIVE: to study the register of OAE among two different groups of workers of a graphical industry: exposed and non-exposed to occupational noise and with regular audiometric thresholds. METHOD: Transient evoked otoacustic emissions (TEOAE) and distortion product otoacustic emissions (DPOAE) were researched in 158 ears of 79 subjects, all male, matched by two groups: exposed (42) and non-exposed to occupational noise (37). RESULTS: Among the non-exposed group was observed 54.1% of present response in both ears in TEOAE, and 24.3% have absent responses in both ears in the DPOAE test. Among the exposed group, 14.3% has presence responses in TEOAE in both ears, and 61.9% have absence in two ears. The statistical analysis indicated noise exposure effect at the percentage of presence of EOAPD in f2(s) of 2002, 5042 and 6348 Hz and in the general result both at TEOAE and at DPOAE. The present responses in non-exposed group was significantly higher than in exposed group in both tests. CONCLUSIONS: The test of otoacustic emissions was an important procedure in the early identification of auditory alterations, differentiating exposed and non-exposed subjects to occupational noise