Tympanometry with 226 and 1000 Hertz tone probes in infants

Tympanometry with 226 and 1000 Hertz tone probes in infants

Alternative title Timpanometria com sonda de 226 e 1000 hertz em bebês
Author Resende, Luciana Macedo de Autor UNIFESP Google Scholar
Ferreira, Juliana dos Santos Google Scholar
Silva Carvalho, Sirley Alves da Google Scholar
Oliveira, Isamara Simas Google Scholar
Bassi, Iara Barreto Google Scholar
Institution Universidade Federal de Minas Gerais (UFMG)
Universidade Federal de São Paulo (UNIFESP)
Abstract This study aimed at describing and analyzing tympanometric results obtained with 226Hz and 1000Hz probe tones; checking for correlations between tympanometry, otoacoustic emissions and otoscopic examination; describing abnormal results found in the evaluation procedures.Methods: Double-blind and prospective study. Our sample included 70 babies, between 7 days and one month and 13 days of age, without risk indicators for hearing loss, evaluated in the State Neonatal Hearing Screening Program. Transient evoked otoacoustic emissions, otoscopic examination and tympanometry with 226Hz and 1000Hz probe tones were used as assessment tools. The study was approved by the Ethics Committee from the institution.Results: Statistically significant differences were observed (p<0.05) in the tympanometric measures correlation and also between transient evoked otoacoustic emissions and compliance obtained with both probe tones. Most test results were within the normal range (94.28%). Three children (4.28%) were referred to diagnostic follow-up and one (1.42%) had middle ear dysfunction confirmed by otoscopy and 1000Hz tympanometry.Conclusions: 1000Hz tympanometry is the most reliable probe tone used to evaluate children under three months of age. More studies focusing on middle ear acoustics and mechanics are necessary to provide reliable and precise interpretation in the evaluation of middle ear functions in babies.
Keywords acoustic impedance tests
hearing
infant
infant newborn
Language English
Date 2012-01-01
Published in Brazilian Journal Of Otorhinolaryngology. Sao Paulo: Assoc Brasileira Otorrinolaringologia & Cirurgia Cervicofacial, v. 78, n. 1, p. 95-102, 2012.
ISSN 1808-8694 (Sherpa/Romeo, impact factor)
Publisher Assoc Brasileira Otorrinolaringologia & Cirurgia Cervicofacial
Extent 95-102
Origin http://dx.doi.org/10.1590/S1808-86942012000100015
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000301208800015
SciELO ID S1808-86942012000100015 (statistics in SciELO)
URI http://repositorio.unifesp.br/11600/43159

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