Current understanding of auditory neuropathy
Annals of the Academy of Medicine, Singapore
;
: 60-63, 2008.
Artigo
em Inglês
| WPRIM
| ID: wpr-244462
ABSTRACT
Auditory neuropathy is defined by the presence of normal evoked otoacoustic emissions (OAE) and absent or abnormal auditory brainstem responses (ABR). The sites of lesion could be at the cochlear inner hair cells, spiral ganglion cells of the cochlea, synapse between the inner hair cells and auditory nerve, or the auditory nerve itself. Genetic, infectious or neonatal/perinatal insults are the 3 most commonly identified underlying causes. Children usually present with delay in speech and language development while adult patients present with hearing loss and disproportionately poor speech discrimination for the degree of hearing loss. Although cochlear implant is the treatment of choice, current evidence show that it benefits only those patients with endocochlear lesions, but not those with cochlear nerve deficiency or central nervous system disorders. As auditory neuropathy is a disorder with potential long-term impact on a child's development, early hearing screen using both OAE and ABR should be carried out on all newborns and infants to allow early detection and intervention.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Terapêutica
/
Doenças do Nervo Vestibulococlear
/
Potenciais Evocados Auditivos do Tronco Encefálico
/
Diagnóstico
Tipo de estudo:
Estudo diagnóstico
/
Estudo de rastreamento
Limite:
Criança
/
Criança, pré-escolar
/
Humanos
/
Lactente
/
Recém-Nascido
Idioma:
Inglês
Revista:
Annals of the Academy of Medicine, Singapore
Ano de publicação:
2008
Tipo de documento:
Artigo
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