Otoacoustic emissions and acoustic immitance measurements using 226 and 1000Hz probe tones in neonates / Emisssões otoacusticas e medidas de imitancia acustica com tons de sonda de 226 e 1.000Hz em neonatos
AUTOR(ES)
Tatiana Guilhermino Tazinazzio
DATA DE PUBLICAÇÃO
2010
RESUMO
Objective: To assess the results found in Immittance measurements using 226Hz and 1000Hz in neonates without Hearing Loss Risks Indicators (HLRI) and to correlate them to Transient Evoked Otoacoustic Emissions (EOAT) and also to study Acoustic Reflex using 226Hz probe tones. Methods: Assessments of 52 full - term neonates, being 27 males and 25 females on an age group from 11 to 51 days of life. Anamnese, Meatoscopy, EOAT, Tympanometry using 226 and 1000 probe tones and Ipsilateral Acoustic Reflex Research were performed. Results: Data were analyzed regardless gender and ears. In relation to EOAT (78,8%) were present. Tympanometric curves using 226Hz probe tone found were: A ( 55,8%), D (40,4%) and Ar (1,0%), B (2,9%); and the ones found using 1000Hz probe tone were: A (74%), D (1%), B (14,4%) and Blocked (10,6%). According to p-value, there has been a relation among Tympanometric and general reproductivity. On the sample, 81,7% of the ears indicated presence of Acoustic Reflex. Conclusions: A significant statistically relation was found when it was compared Tympanometric curves types A and D using 226Hz. When it was compared the probe tones types A and blocked (using 1000Hz) to tympanometric curves type B, they were related to the EOAT emissions, which were also statistically significant. Besides, it was also verified a greater detection of changes on middle ear when the immitanciometry was performed using 1000Hz probe tone than the one performed using 226Hz probe tone. Tympanometric curve using 1000Hz probe tone showed to be more adequated for the detection of changes of middle ear than 226Hz probe tone
ASSUNTO(S)
middle impedancia acustica orelha media hearing ear acoustic impedance newborn infant audição (fisiologia) recem-nascidos
ACESSO AO ARTIGO
http://libdigi.unicamp.br/document/?code=000479173Documentos Relacionados
- Emissões otoacústicas e medidas de imitância acústica com sonda de 226 e 1000Hz em lactentes com refluxo gastroesofágico.
- Emissões otoacústicas e medidas de imitância acústica com tons de sonda de 226 e 1000 hz em lactentes
- Estudo das medidas de imitância acústica com tom sonda de 226 e 1000 Hz em neonatos
- Medidas de imitância acústica em lactentes com 226hz e 1000hz: correlação com as emissões otoacústicas e o exame otoscópico
- A influência da sonda de 226 e 1.000 Hz no registro do reflexo acústico em neonatos