Cochlear implantation in an adult patient with auditory neuropathy.
We present a case report of effective cochlear implantation for an adult patient with auditory neuropathy. A 34-year-old man developed bilateral hearing loss at approximately 10 years of age. His speech discrimination score was very severe despite only moderate sensorineural hearing loss. Absence of auditory brainstem responses (ABR) and preservation of distortion product otoacoustic emissions (DPOAE) were confirmed by our audiological examinations. After cochlear implantation, good responses for electrically evoked compound action potential (EAP) and electrically evoked ABR (EABR) were observed. Postoperatively, his audiological performance was significantly improved. We conclude that cochlear implantation can be a valid option for patients with auditory neuropathy.
Katada
Akihiro
A
Department of Otolaryngology - Head and Neck Surgery, Asahikawa Medical College, Japan. katada@asahikawa-med.ac.jp
Nonaka
Satoshi
S
Harabuchi
Yasuaki
Y
D000328:Adult; D001301:Audiometry, Pure-Tone; D001302:Audiometry, Speech; D001309:Auditory Threshold; D019929:Cochlear Implantation; D003054:Cochlear Implants; D003056:Cochlear Nerve; D004558:Electric Stimulation; D016057:Evoked Potentials, Auditory, Brain Stem; D006319:Hearing Loss, Sensorineural / Q000150:complications / Q000601:surgery*; D006801:Humans; D008297:Male; D017084:Otoacoustic Emissions, Spontaneous; D013067:Speech Perception; D016896:Treatment Outcome; D000160:Vestibulocochlear Nerve Diseases / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*