Distortion product otoacoustic emission analysis in premature neonates/Analise das emissoes otoacusticas evocadas por produto de distorcao em neonatos prematuros

Purpose: to verify the incidence of changes in otoacoustic emission distortion product in premature infants and to analyze the magnitude of responses in relation to the gestational age in this population. Methods: observational cross-sectional study, which included results analysis of distortion pro...

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Veröffentlicht in:Revista CEFAC 2014-01, Vol.16 (1), p.92
Hauptverfasser: Diniz, Jaqueline Batista, Carvalho, Sirley Alves da Silva, Ferreira, Daniele Barreto Cunha, Ramos, Camila Vilaca, Bassi, Iara Barreto, de Resende, Luciana Macedo
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Zusammenfassung:Purpose: to verify the incidence of changes in otoacoustic emission distortion product in premature infants and to analyze the magnitude of responses in relation to the gestational age in this population. Methods: observational cross-sectional study, which included results analysis of distortion product otoacoustic emissions of preterm newborns, screened in a public hospital in Belo Horizonte, from August 2010 to February, 2011. The infants were divided into three groups according to the gestational ages, the first group consisting of neonates aging 28-30 weeks, the second was of 31-33 weeks and third group of 34-36 weeks. This study was approved by the Ethics Committee of UFMG number 0210.0.203.000-10. Results: among the 44 children studied (93.62%) distortion product otoacoustic emissions (DPOAE) were present and only three children (6.38%) had absent DPOAEs. Regarding the amplitude analysis of the otoacoustic emissions and their comparisons between groups, no statistically significant difference was found between gestational groups, however we observed lower p values between gestational groups at high frequencies--6kHz and 5KHz. Conclusion: prematurity in itself is not a factor that influences the outcome of DPOAE in premature neonates. KEYWORDS: Otoacoustic Emissions, Spontaneous; Neonatal Screening; Hearing; Infant, Premature; Infant, Newborn Objetivos: verificar a incidencia de alteracoes nas Emissoes Otoacusticas por Produto de Distorcao em neonatos prematuros e analisar a amplitude das respostas em funcao da idade gestacional nessa populacao. Metodos: trata-se de um estudo transversal observacional, que contou com analise dos resultados do exame de emissoes otoacusticas evocadas por produto de distorcao dos neonatos pre-termos, triados em um hospital publico de Belo Horizonte, no periodo de agosto de 2010 a fevereiro de 2011. Os neonatos avaliados foram divididos em tres grupos de acordo com a idade gestacional, sendo o primeiro grupo constituido por neonatos de 28-30 semanas, o segundo de 31-33 semanas e o terceiro grupo de 34-36 semanas. Este estudo foi aprovado pelo Comite de Etica da UFG sob parecer numero 0210.0.203.000-10. Resultados: dentre as criancas avaliadas 44 (93,62%) apresentaram Emissoes Otoacusticas Por Produto de Distorcao (EOAPD) presentes e apenas tres criancas (6,38%) apresentaram EOAPD ausentes. Com relacao a analise das amplitudes das EOAs e suas comparacoes entre os grupos estudados, nao foi encontrada diferenca estatisticame
ISSN:1516-1846
DOI:10.1590/1982-0216201419012