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Year: 2015  Vol. 19   Num. 2  - Apr/Junee
DOI: 10.1055/s-0034-1390328
Original Article
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Auditory Neuropathy/Dyssynchrony: A Retrospective Analysis of 15 Cases
Murat Unal, Yusuf Vayisoglu
Key words:
auditory neuropathy/dyssynchrony - otoacoustic emission - auditory brainstem response

Introduction: Auditory neuropathy/dyssynchrony (AN/AD) comprises a spectrum of pathology affecting the auditory pathways anywhere from the inner hair cells to the brainstem. It is characterized by an absent or atypical auditory brainstem response (ABR) with preservation of the cochlear microphonics and/or otoacoustic emissions (OAEs).

Objective: Retrospective analysis of patients with AN/AD.

Methods: Fifteen patients with AN/AD were included in this study and their records were retrospectively investigated.

Results: Possible etiology of AN/AD was neonatal hyperbilirubinemia in three patients, family history of hearing loss in three patients, consanguineous marriage in two patients, head trauma in two patients, mental motor retardation in one patient, cerebrovascular disease in one patient, and there was no apparent cause in three patients.

Conclusion: Otolaryngologists should keep in mind the diagnosis of AN/AD especially in patients complaining of difficulty in hearing and speech and audiological evidence of disassociation between pure tone and speech audiometry. ABR and OAE testing is recommended in these patients for AN/AD diagnosis.



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