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Related Experiment Videos

High-frequency (1000 Hz) tympanometry in normal neonates.

Joseph Kei1, Julie Allison-Levick, Jacqueline Dockray

  • 1Department of Speech Pathology and Audiology, The University of Queensland, Brisbane, Australia.

Journal of the American Academy of Audiology
|July 2, 2003
PubMed
Summary

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This study describes high-frequency (1000 Hz) acoustic admittance in healthy neonates. Normative data for 1000 Hz tympanometry in newborns can help identify middle ear dysfunction.

Area of Science:

  • Audiology
  • Neonatal Medicine
  • Otoacoustic Emissions

Background:

  • Middle ear dysfunction is a concern in neonates.
  • Establishing normative data for neonatal middle ear measurements is crucial for early detection.
  • High-frequency tympanometry provides detailed middle ear characteristics.

Purpose of the Study:

  • To describe the characteristics of high-frequency (1000 Hz) acoustic admittance in healthy neonates.
  • To establish normative tympanometric data for 1000 Hz in a neonatal cohort.
  • To investigate potential ear and gender effects on these measurements.

Main Methods:

  • 170 healthy neonates (1-6 days old) were enrolled.
  • Transient evoked otoacoustic emissions (TEOAEs) and 226 Hz/1000 Hz tympanometry were performed using a Madsen Capella.

Related Experiment Videos

  • Data from 122 neonates (244 ears) who passed TEOAE screening and had acceptable probe seals were analyzed.

    • Main Results:

    • 92.2% of neonates showed single-peaked 1000 Hz tympanograms.
    • Significant ear differences were observed: right ears had higher mean peak compensated static admittance and tympanometric width.
    • Left ears showed lower mean acoustic admittance at +200 daPa and gradient compared to right ears; no gender effects were found.

    Conclusions:

    • Normative data for 1000 Hz tympanometry in neonates were established.
    • These findings provide a reference for identifying middle ear dysfunction in newborns.
    • Ear-specific differences in neonatal middle ear admittance characteristics were identified.