Contribution of bone conduction click-evoked auditory brainstem responses to diagnosis of hearing loss in infants in France - 15/05/21
, M. Montero a, A. Alhamwi b, A. Neagu a, E. Veuillet a, b, c, H. Thai-Van a, b, cBienvenue sur EM-consulte, la référence des professionnels de santé.
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Abstract |
Introduction |
Neonatal hearing screening in France involves confirmation by a childhood hearing expert centre in case of suspected hearing loss. Although click-evoked air-conduction auditory brainstem responses (AC-ABR) are the gold standard in France, there are no guidelines for bone-conduction ABRs (BC-ABR). The present study assessed the interest of associating click-evoked BC- and AC-ABRs for diagnostic confirmation in neonatal hearing screening.
Materials and methods |
A retrospective study included 59 infant ears with conductive hearing loss referred to the centre of Lyon, France. Objective hearing thresholds were compared between click-evoked BC- and AC-ABRs on a method previously validated in a normal-hearing population.
Results |
There was a significant difference in mean threshold between AC-ABR (53.27±1.189 dBnHL) and BC-ABR (28.1±0.935 dBnHL) (P<0.001). AC thresholds ranged from 40 to 60 dBnHL while BC thresholds exceeded 40 dBnHL in only 9 ears.
Conclusion |
Using BC-ABRs could reduce the false-positive rate in neonatal bilateral permanent hearing loss screening, in complement to AC-ABRs using the same stimulus. Click-evoked BC-ABR could be contributive whenever conductive hearing loss is suspected, in complement to AC-ABR, without unreasonably increasing examination time.
Le texte complet de cet article est disponible en PDF.Keywords : Auditory Brainstem Responses, Bone conduction, Neonatal screening, Hearing loss
Plan
Vol 138 - N° 3
P. 159-162 - mai 2021 Retour au numéro
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