Related Experiment Videos
Distortion-product otoacoustic emissions in neonates: normative data
P Bonfils1, P Avan, M Francois
1ORL Department, Hôpital Boucicaut, Faculty Necker-Enfants-Malades, University Paris V, France.
Acta Oto-Laryngologica
|September 1, 1992
Summary
Distortion-product otoacoustic emissions (DPOEs) in newborns are larger than in adults and can help assess cochlear function. Analyzing DPOEs with evoked otoacoustic emissions (EOEs) aids in evaluating peripheral auditory function in neonates.
Area of Science:
- Audiology
- Otoacoustic Emissions
- Neonatal Hearing Screening
Background:
- Distortion-product otoacoustic emissions (DPOEs) assess cochlear mechanical properties.
- Evoked otoacoustic emissions (EOEs) provide frequency-specific auditory information.
Purpose of the Study:
- To establish normative input-output DPOE functions in neonates.
- To analyze DPOE results in relation to EOE properties in neonates.
- To evaluate the utility of DPOEs for neonatal auditory assessment.
Main Methods:
- Recorded DPOEs across audiometric frequencies (867 Hz to 8 kHz).
- Analyzed DPOEs based on concurrent EOE characteristics.
- Compared DPOE functions in neonates with normal and atypical EOEs.
Main Results:
- Neonates with normal EOEs exhibited robust DPOEs.
- DPOE amplitudes were significantly larger in neonates compared to adults.
- Neonates with atypical EOEs (lacking low frequencies) showed normal DPOEs only at high frequencies (>2 kHz).
Conclusions:
- DPOEs are larger in neonates than adults.
- DPOEs, alongside EOEs, are valuable for precise neonatal peripheral auditory function evaluation.
- DPOEs can identify high-frequency auditory function even with atypical EOE profiles.