Increase in cochlear implant electrode impedances with the use of electrical stimulation.
Int J Audiol
; 59(11): 881-888, 2020 11.
Article
em En
| MEDLINE
| ID: mdl-32749178
ABSTRACT
OBJECTIVE:
Electrode impedances play a critical role in cochlear implant programming. It has been previously shown that impedances rise during periods of non-use, such as the post-operative recovery period. Then when the device is activated and use is initiated, impedances fall and are typically stable. In this study, we report a new pattern where electrode impedances increase with device use and decrease with device rest.DESIGN:
Electrode impedances were measured three to four times every day over a span of 1-3 months for two cochlear implant patients. STUDY SAMPLE Two patients with a Nucleus cochlear implant participated in this study.RESULTS:
Both subjects in this study show wide fluctuations in electrode impedances. By taking serial electrode impedance measurements throughout a day of use, we observe that electrode impedances consistently increase with device use and decrease with device rest.CONCLUSION:
In this study, we report two cases of electrode impedances increasing as a function of device use. Numerous management strategies were employed to reduce this effect but none prevailed; a clear pathophysiologic mechanism remains elusive. Further study into the cause of this electrode impedance pattern is warranted to establish a management strategy for these cochlear implant users.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Implantes Cocleares
/
Implante Coclear
Limite:
Humans
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article