Tympanometry with 226 and 1000 Hertz tone probes in infants

Resende, Luciana Macedo de; Ferreira, Juliana dos Santos; Carvalho, Sirley Alves da Silva; Oliveira, Isamara Simas de; Bassi, Iara Barreto

doi:10.1590/s1808-86942012000100015

Cited by 8 publications

(2 citation statements)

References 18 publications

(34 reference statements)

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“…Looking forward, our system was tested in a pediatric population with a minimum age of one year with a tone frequency of 226 Hz. Due to known developmental differences in mass and stiffness characteristics of the outer and middle ears of infants age 0 to 9 months 38,39 , tympanometry at 1000 Hz is recommended 40,41 . Further research is needed to evaluate the utility of our system in young infants.…”

Section: Clinical Testing Results We Conducted a Clinical Study At Se...mentioning

confidence: 99%

Performing tympanometry using smartphones

et al. 2022

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Background Tympanometry is used as part of a battery of tests for screening of middle ear function and may help diagnose middle ear disorders, but remains available only on expensive test equipment. Methods We report a low-cost smartphone-based tympanometer system that consists of a lightweight and portable attachment to vary air pressure in the ear and measure middle ear function. The smartphone displays a tympanogram and reports peak acoustic admittance in realtime. Our programmable and open-source system operates at 226 Hz and was tested on 50 pediatric patient ears in an audiology clinic in parallel with a commercial tympanometer. Results Our study shows an average agreement of 86 ± 2% between the 100 tympanograms produced by the smartphone and commercial device when five pediatric audiologists classified them into five classes based on the Liden and Jerger classification. Conclusion Given the accessibility and prevalence of budget smartphones in developing countries, our open-source tool may help provide timely and affordable screening of middle ear disorders.

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Section: Clinical Testing Results We Conducted a Clinical Study At Se...mentioning

confidence: 99%

Performing tympanometry using smartphones

et al. 2022

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“…As medidas de imitância acústica são imprescindíveis para verificação da função da orelha média e encaminhamento para acompanhamento médico, nos casos de perda condutiva. O uso da sonda de 1000Hz no lugar da tradicional sonda de 226Hz permite a avaliação fidedigna de mobilidade de membrana timpânica em bebês com menos de seis meses de vida (RESENDE et al, 2012). Nas avaliações eletroacústicas realiza-se o exame de rotina da triagem auditiva neonatal (TAN) por meio das emissões otoacústicas evocadas por estímulo transiente e acrescenta-se a pesquisa das emissões por produto de distorção.…”

Section: Avaliação Objetiva Da Audição De Bebêsunclassified

Capítulo V - Audição no primeiro ciclo de vida

Costa,

Souza,

Lima

et al. 2021

Fonoaudiologia No Primeiro Ciclo De Vida

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Neonatal hearing screening - does failure in TEOAE screening matter when the AABR test is passed?

Gellrich,

Gröger,

Echternach

et al. 2023

Eur Arch Otorhinolaryngol

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Purpose Newborns who fail the transient evoked otoacoustic emissions (TEOAE) but pass the automatic auditory brainstem response (AABR) in universal newborn hearing screening (UNHS), frequently have no further diagnostic test or follow-up. The present study aimed to investigate whether hearing loss might be missed by ignoring neonatal TEOAE failure in the presence of normal AABR. Methods A retrospective analysis was conducted in newborns presenting between 2017 and 2021 to a tertiary referral centre due to failure in the initial UNHS. The main focus was on infants who failed TEOAE tests, but passed AABR screening. The clinical characteristics and audiometric outcomes were analysed and compared with those of other neonates. Results Among 1,095 referred newborns, 253 (23%) failed TEOAE despite passing AABR screening. Of the 253 affected infants, 154 returned for follow-up. At 1-year follow-up, 46 (28%) achieved normal audiometric results. 32 (21%) infants had permanent hearing loss (HL) confirmed by diagnostic ABR, 58 (38%) infants had HL solely due to middle ear effusion (MEE), and for 18 (12%) infants HL was suspected without further differentiation. The majority of permanent HL was mild (78% mild vs. 13% moderate vs. 9% profound). The rate of spontaneous MEE clearance was rather low (29%) leading to early surgical intervention in 36 children. The profile of the risk factors for hearing impairment was similar to that of newborns with failure in both, TEOAE and AABR; however, there was a stronger association between the presence of risk factors and the incidence of HL (relative risk 1.55 vs. 1.06; odds ratio 3.61 vs. 1.80). Conclusion In newborns, the discordance between a “refer” in TEOAE and a “pass” in AABR screening is associated with a substantial prevalence of hearing impairment at follow-up, especially in the presence of risk factors.

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Tympanometry with 226 and 1000 Hertz tone probes in infants

Cited by 8 publications

References 18 publications

Performing tympanometry using smartphones

Performing tympanometry using smartphones

Capítulo V - Audição no primeiro ciclo de vida

Neonatal hearing screening - does failure in TEOAE screening matter when the AABR test is passed?

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