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Year: 2013  Vol. 17   Num. 4  - Oct/Dec
DOI: 10.1055/s-0033-1351678
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Tympanometry in Infants: A Study of the Sensitivity and Specificity of 226-Hz and 1,000-Hz Probe Tones
Timpanometria em Lactentes: Um Estudo da Sensibilidade e Especificidade dos Tons Teste de 226 Hz e 1.000 Hz
Michele Picano Carmo, Nayara Thais de Oliveira Costa, Teresa Maria Momensohn-Santos
Key words:
speech language and hearing sciences - hearing - acoustic impedance tests - otitis media with effusion - spontaneous otoacoustic emissions

Introduction: For infants under 6 months, the literature recommends 1,000-Hz tympanometry, which has a greater sensitivity for the correct identification of middle ear disorders in this population.

Objective: To systematically analyze national and international publications found in electronic databases that used tympanometry with 226-Hz and 1,000-Hz probe tones.

Data Synthesis: Initially, we identified 36 articles in the SciELO database, 11 in the Latin American and Caribbean Literature on the Health Sciences (LILACS) database, 199 in MEDLINE, 0 in the Cochrane database, 16 in ISI Web of Knowledge, and 185 in the Scopus database. We excluded 433 articles because they did not fit the selection criteria, leaving 14 publications that were analyzed in their entirety.

Conclusions: The 1,000-Hz tone test has greater sensitivity and specificity for the correct identification of tympanometric curve changes. However, it is necessary to clarify the doubts that still exist regarding the use of this test frequency. Improved methods for rating curves, standardization of normality criteria, and the types of curves found in infants should be addressed.



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