Abstract
A major concern regarding multichannel (multi-electrode) cochlear prosthesis usage has been the possibility of long-term deleterious physiological effects such as the degeneration of spiral ganglion cells, neuronal degeneration, and new bone formation. These effects, if present, would become evident in the deterioration of hearing sensation and performance of the cochlear implant recipient on a battery of audiologic tests. To date, five patients using the Australian multi-electrode multichannel cochlear implant have undergone a 1-year evaluation of the device. The assessment includes a check of electrical threshold and comfort levels for each electrode, sound field pure tone and speech thresholds, the MAC battery, vowel and consonant recognition tests, and speech tracking tasks. All results were compared to those obtained postoperatively following stimulation and a 3-month training period. Results to date have shown no deterioration in implant functioning in all patients tested. Periodic extensive monitoring of all implant recipients is advocated in order to evaluate the possibility of long-term effects.
Citations
Feb 22, 2014·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Sean T Massa, Michael J Ruckenstein
Oct 26, 2002·The Journal of the Acoustical Society of America·Qian-Jie FuJohn J Galvin
Jan 5, 2002·Ear and Hearing·M L HughesM W Lowder
Apr 25, 2000·Ear and Hearing·C J BrownJ Gervais
Feb 26, 2008·Hearing Research·Qian-Jie Fu, John J Galvin
Aug 20, 2002·The Annals of Otology, Rhinology, and Laryngology·Satoshi IwasakiTomoyuki Hoshino
Oct 1, 1991·The Annals of Otology, Rhinology, and Laryngology·J F KnutsonG Woodworth
Nov 1, 1991·The Annals of Otology, Rhinology, and Laryngology·J F KnutsonG Woodworth
Oct 1, 1992·Journal of Speech and Hearing Research·M F DormanJ L Parkin
Mar 1, 1993·American Journal of Audiology·R S Tyler
Sep 1, 1990·Journal of Speech and Hearing Research·L G Spivak, S B Waltzman
Jan 26, 2000·American Journal of Audiology·J C SunT S Huang
Mar 1, 1997·Audiology : Official Organ of the International Society of Audiology·S L ArauzM Ortega
Oct 26, 2018·Ear and Hearing·John J GalvinRobert V Shannon
Mar 1, 1996·Acta Oto-laryngologica·T KuboK Fujii
Jan 1, 1992·Audiology : Official Organ of the International Society of Audiology·R S TylerB J Gantz
Dec 1, 1991·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·S B WaltzmanW H Shapiro