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Hearing Screening in Physiological and Risk Newborn Children by the OAE and AABR Methods – Evaluation of Results


Authors: E. Havlíková 1;  R. Poláčková 2;  T. Vítečková 2;  Karol Zeleník 1,3 ;  Pavel Komínek 1,3
Authors place of work: Otorinolaryngologická klinika, FN Ostrava 1;  Oddělení neonatologie, FN Ostrava 2;  Lékařská fakulta, Katedra kraniofaciálních oborů, Ostravská univerzita 3
Published in the journal: Otorinolaryngol Foniatr, 64, 2015, No. 1, pp. 17-21.
Category: Original Article

Summary

Introduction:
Examination of otoacoustic emissions (OAE) and automated auditory brainstem response (AABR) are the most commonly screening methods used for detection of hearing problems in newborns. The methods can be used alone or in combination, each method has its advantages and disadvantages. The aim of the study was to determine the incidence of bilateral moderate and severe hearing loss in physiological newborns and risk infants and to determine the number of false-positive results for both screening methods for bilateral moderate to severe hearing loss.

Methods:
All physiological and risk newborns born at University Hospital Ostrava in the period from 10/2012 to 2/2014 were included in the study. In the group of physiological newborns (group I) OAE was performed. In case of absent OAE, AABR were examine. If AABR showed possible hearing defect, examination of brainstem evoked response audiometry (BERA) and/or SSEP (steady-state evoked potentials) was performed. Both, OAE and AABR, were examined in all risk neonates (group II). In the case of bilateral absent OAE and/or AABR examination BERA and/or SSEP was performed to establish the hearing threshold.

Results:
Of the 2460 physiological newborns (group I), 2457 were enrolled in the study. Bilateral absent OAE were detected in 40 (1.6%) neonates, one of them (0.04%) was diagnosed with severe sensorineuaral hearing loss, one (0.04%) with moderate sensorineuaral hearing loss and three (0.12%) with unilateral sensorineural hearing loss. The number of false positive tests in the group of bilateral absent OAE was 35/2457 (1.4%).

From 889 risk infants, 836 were enrolled in the study. Bilateral absent OAE were detected in 22/836 (2.6%) neonates and bilateral pathological AABR at 18/836 (2.2%) newborns. Subsequent BERA examination confirmed in 4/836 (0.47%) risk infants bilateral moderate to severe sensorineural hearing loss, all 4 patients had bilaterally absent both, OAE as well as AABR. The number of false positive OAE in the group of bilateral absent OAE was 18/836 (2.1%). The number of false positive AABR in the group of bilateral absent AABR was 14/836 (1.7%).

Conclusion:
Bilateral moderate to severe hearing loss requiring further rehabilitation with hearing aids or cochlear implant was detected more often in risk newborns. OAE and AABR have a low number of false positive results. Although the child with present OAE and absent AABR (typical for auditory neuropathy) was not present in our group, according to the results from largest abroad studies it is recommended in risk neonates perform both screening methods.

Keywords:
screening methods, otoacoustic emissions, hearing aid, cochlear implants


Zdroje

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Štítky
Audiology Paediatric ENT ENT (Otorhinolaryngology)

Článok vyšiel v časopise

Otorhinolaryngology and Phoniatrics

Číslo 1

2015 Číslo 1

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