Article (Scientific journals)
Auditory Neuropathy Spectrum Disorders: From Diagnosis to Treatment: Literature Review and Case Reports.
De Siati, Romolo Daniele; Rosenzweig, Flora; Gersdorff, Guillaume et al.
2020In Journal of Clinical Medicine, 9 (4), p. 1074
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Keywords :
ANSD; auditory neuropathy spectrum disorder; auditory synaptopathy; cochlear implant; genetics; hidden hearing loss; Medicine (all)
Abstract :
[en] Auditory neuropathy spectrum disorder (ANSD) refers to a range of hearing impairments characterized by deteriorated speech perception, despite relatively preserved pure-tone detection thresholds. Affected individuals usually present with abnormal auditory brainstem responses (ABRs), but normal otoacoustic emissions (OAEs). These electrophysiological characteristics have led to the hypothesis that ANSD may be caused by various dysfunctions at the cochlear inner hair cell (IHC) and spiral ganglion neuron (SGN) levels, while the activity of outer hair cells (OHCs) is preserved, resulting in discrepancies between pure-tone and speech comprehension thresholds. The exact prevalence of ANSD remains unknown; clinical findings show a large variability among subjects with hearing impairment ranging from mild to profound hearing loss. A wide range of prenatal and postnatal etiologies have been proposed. The study of genetics and of the implicated sites of lesion correlated with clinical findings have also led to a better understanding of the molecular mechanisms underlying the various forms of ANSD, and may guide clinicians in better screening, assessment and treatment of ANSD patients. Besides OAEs and ABRs, audiological assessment includes stapedial reflex measurements, supraliminal psychoacoustic tests, electrocochleography (ECochG), auditory steady-state responses (ASSRs) and cortical auditory evoked potentials (CAEPs). Hearing aids are indicated in the treatment of ANSD with mild to moderate hearing loss, whereas cochlear implantation is the first choice of treatment in case of profound hearing loss, especially in case of IHC presynaptic disorders, or in case of poor auditory outcomes with conventional hearing aids.
Disciplines :
Otolaryngology
Author, co-author :
De Siati, Romolo Daniele;  Department of Oto-Rhino-Laryngology and Head and Neck Surgery, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, 10 Avenue Hippocrate, 1200 Brussels, Belgium
Rosenzweig, Flora;  Department of Oto-Rhino-Laryngology and Head and Neck Surgery, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, 10 Avenue Hippocrate, 1200 Brussels, Belgium
Gersdorff, Guillaume  ;  Université de Liège - ULiège > GIGA ; Department of Oto-Rhino-Laryngology and Head and Neck Surgery, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, 10 Avenue Hippocrate, 1200 Brussels, Belgium
Gregoire, Anaïs ;  Department of Oto-Rhino-Laryngology and Head and Neck Surgery, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, 10 Avenue Hippocrate, 1200 Brussels, Belgium
Rombaux, Philippe;  Department of Oto-Rhino-Laryngology and Head and Neck Surgery, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, 10 Avenue Hippocrate, 1200 Brussels, Belgium
Deggouj, Naïma ;  Department of Oto-Rhino-Laryngology and Head and Neck Surgery, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, 10 Avenue Hippocrate, 1200 Brussels, Belgium
Language :
English
Title :
Auditory Neuropathy Spectrum Disorders: From Diagnosis to Treatment: Literature Review and Case Reports.
Publication date :
10 April 2020
Journal title :
Journal of Clinical Medicine
eISSN :
2077-0383
Publisher :
MDPI, Switzerland
Volume :
9
Issue :
4
Pages :
1074
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 May 2026

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