J Audiol Otol.  2016 Dec;20(3):153-157. 10.7874/jao.2016.20.3.153.

High Frequency Tympanometry (1,000 Hz) for Neonates with Normal and Abnormal Transient Evoked Otoacoustic Emissions

• Emadi M
• Rezaei M
• Nahrani MH
• Bolandi M

• KMID: 2361688
• DOI: http://doi.org/10.7874/jao.2016.20.3.153

Abstract

BACKGROUND AND OBJECTIVES
This paper aimed at evaluating the characteristics of high-frequency (1,000 Hz) acoustic admittance (ya) for the neonates with transient evoked otoacoustic emissions (TEOAE) as either pass or refer group.
SUBJECTS AND METHODS
Using a 1,000 Hz probe tone, 297neonates (152 male, 145 female aged 0-104 days old) were evaluated. Tympanometric parameters admittance value at +200 dapa, middle ear admittance, and tympanometric peak pressure were calculated for each tympanogram.
RESULTS
The mean of ya was 0.9678 mmho in the TEOAE for the pass group and 0.7229 mmho in the refer group. The mean of acoustic admittance at +200 (y200) was 2.0657 in the TEOAE for the pass group and 1.7191 for the refer group. The mean of Tpp was 23/8591 in the TEOAE for the pass group and 59/7619 for the refer group.
CONCLUSIONS
There were significant differences in the distribution of different types of tympanograms, the mean of ya, tympanic peak pressure, and y200 between the TEOAEs for the pass and the refer groups.

Keyword

Infant hearing; Otoacoustic emissions; Tympanometry; Static peak admittance; Tympanic peak pressure

MeSH Terms

Acoustic Impedance Tests*
Acoustics
Ear, Middle
Female
Humans
Infant, Newborn*
Male