Normative wideband reflectance measures in healthy neonates

Aithal, Sreedevi, Kei, Joseph, Driscoll, Carlie and Khan, Asaduzzaman (2013) Normative wideband reflectance measures in healthy neonates. International Journal of Pediatric Otorhinolaryngology, 77 1: 29-35. doi:10.1016/j.ijporl.2012.09.024

Author Aithal, Sreedevi
Kei, Joseph
Driscoll, Carlie
Khan, Asaduzzaman
Title Normative wideband reflectance measures in healthy neonates
Journal name International Journal of Pediatric Otorhinolaryngology   Check publisher's open access policy
ISSN 0165-5876
Publication date 2013-01-01
Year available 2012
Sub-type Article (original research)
DOI 10.1016/j.ijporl.2012.09.024
Open Access Status Not Open Access
Volume 77
Issue 1
Start page 29
End page 35
Total pages 7
Place of publication London, United Kingdom
Publisher Elsevier
Language eng
Formatted abstract
Objective: Presently, normative wideband reflectance data are available for neonates who have passed a distortion product otoacoustic emission test. However, passing the distortion product otoacoustic emission test alone does not ensure normal middle ear function. The objective of this study was to establish normative wideband reflectance data in healthy neonates with normal middle ear function, as justified by passing a battery of tests.
Method: Wideband reflectance was measured in 66 infants (mean age = 46.0 h, SD = 21.0, range = 13.3–116.5 h) who passed a test battery that included high frequency (1000 Hz) tympanometry, acoustic stapedial reflex, transient evoked otoacoustic emissions and distortion product otoacoustic emissions.
Results: The analysis of variance (ANOVA) results showed significant variations of reflectance across the frequencies. There was no significant difference between ears and genders. The median reflectance reached a minimum of 0.21–0.24 at 1–2 kHz, but increased to 0.45–0.59 below 1 kHz and 0.24–0.52 above 2 kHz.
Conclusions: The normative reflectance data established in the present study were in agreement with, but marginally smaller than, those of previous normative studies, except for the Keefe et al. (2000) study. While the use of a test battery approach to ensure normal middle ear function in neonates has resulted in slightly reduced reflectance across most frequencies when compared to studies that have used only otoacoustic emissions, further research is needed to accurately determine the middle ear status of neonates using test performance measures.
Keyword Wideband reflectance
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 7 October 2012

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Health and Rehabilitation Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 13 times in Thomson Reuters Web of Science Article | Citations
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Created: Fri, 11 Jan 2013, 22:09:14 EST by Dr Carlie Driscoll on behalf of School of Health & Rehabilitation Sciences