Measuring middle ear admittance in newborns using 1000 Hz tympanometry

A comparison of methodologies

Joseph Kei, Rafidah Mazlan, Louise Hickson, John Gavranich, Ron Linning

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The present study aimed to compare three measures to estimate middle ear admittance in neonates using 1000 Hz tympanometry. Data were obtained from 36 full-term newborns, aged between 24 and 123 hours, who passed a transient evoked otoacoustic emissions test and assessed using a Madsen Otoflex impedance meter. The results showed that the mean middle ear admittances obtained by compensating for the susceptance and conductance components at a pressure of 200 daPa and -400 daPa (YCC200 = 1.00 mmho and YCC-400 = 1.24 mmho, respectively) were significantly greater than that using the traditional baseline compensation method (YBC = 0.65 mmho). Although YCC-400 has attained the highest mean value, it has the lowest test-retest reliability. Hence, the component compensation approach compensated at 200 daPa holds promise as an alternative method for estimating middle ear admittance in neonates. Further research to evaluate its test performance using clinical decision theory is required to determine its clinical significance.

Original languageEnglish
Pages (from-to)739-748
Number of pages10
JournalJournal of the American Academy of Audiology
Volume18
Issue number9
DOIs
Publication statusPublished - Oct 2007
Externally publishedYes

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Acoustic Impedance Tests
Middle Ear
Decision Theory
Electric Impedance
Reproducibility of Results
Pressure
Research

Keywords

  • 1000 Hz tympanometry
  • Admittance
  • Conductance
  • Middle ear
  • Neonates
  • Susceptance

ASJC Scopus subject areas

  • Otorhinolaryngology

Cite this

Measuring middle ear admittance in newborns using 1000 Hz tympanometry : A comparison of methodologies. / Kei, Joseph; Mazlan, Rafidah; Hickson, Louise; Gavranich, John; Linning, Ron.

In: Journal of the American Academy of Audiology, Vol. 18, No. 9, 10.2007, p. 739-748.

Research output: Contribution to journalArticle

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