The Long-Term Effects of Modified Electrode Surfaces and Intracochlear Corticosteroids on Postoperative Impedances in Cochlear Implant Patients

• DOI: 10.1097/mao.0b013e3181ab8fba
• Publication Date: 2009-07-22T07:32:49Z
• Authors: Gerrit Paasche; Claudia Tasche; Timo Stöver; Anke Lesinski-Sch...; Thomas Lenarz
• Keywords: Basal (medicine)

The objective of this study was to investigate the long-term effect intraoperative application steroid suspension and coating electrode contacts with a thin film iridium oxide on intracochlear impedance development after cochlear implantation difference before stimulation.Time-dependent impedances investigated in 4 different groups adult patients up years implantation. Additionally, during rehabilitation period just first fitting, stimulation were measured as influence electrical impedances. Results from standard Nucleus 24 Contour (control), steroids, iridium-coated Contour, steroids compared.Steroid reduced significantly throughout observation Iridium had no effect. Differences between mainly found basal middle parts cochlea, but not close tip array, also indicating that postoperative fibrous tissue growth is stronger region cochlea. Group mean values influenced by treatments. Nevertheless, only both steroid-treated correlation found.Although differences control decrease time, single deposition proven lower 3 probably because reduction growth.