title: Longitudinal behaviour of neural response telemetry (NRT) data and clinical implications.
abstract: Neural response telemetry (NRT) data from 63 subjects equipped with the Nucleus CI24M Cochlear Implant System generally exhibited little change over up to 4 years. Larger changes, when they occurred, were seen only within the first 15 months postoperatively, and these changes diminished over time. Intraoperative NRT data were generally stable enough to be used for assisting in the initial speech processor fitting sessions. It was not possible to predict changes in the subjective map threshold and comfortable loudness levels (T and C levels, respectively) based on observed changes in the NRT data. The long-term stability of the neural response amplitude and the neural response threshold, however, implies that NRT may be useful as a routine diagnostic tool to detect changes to the neural periphery over time.
authors.affiliation: ENT Department, University Hospital, Zurich, Switzerland. lai@orl.usz.ch
authors.forename: Wai Kong
authors.initials: WK
authors.lastname: Lai
authors.forename: Mehmet
authors.initials: M
authors.lastname: Aksit
authors.forename: Ferda
authors.initials: F
authors.lastname: Akdas
authors.forename: Norbert
authors.initials: N
authors.lastname: Dillier
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003054:Cochlear Implants; D003056:Cochlear Nerve / Q000502:physiology*; D003638:Deafness / Q000628:therapy; D004558:Electric Stimulation; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D016343:Monitoring, Intraoperative; D011182:Postoperative Care; D012189:Retrospective Studies; D013686:Telemetry