Postoperative changes in telemetry measurements after cochlear implantation and its impact on early activation

2015 ◽  
Vol 40 (6) ◽  
pp. 527-534 ◽  
Author(s):  
A. Wolf-Magele ◽  
J. Schnabl ◽  
S. Edlinger ◽  
S.M. Pok ◽  
P. Schoerg ◽  
...  
Keyword(s):  
Cochlear Implantation ◽  
Early Activation ◽  
Postoperative Changes ◽  
Telemetry Measurements

Feasibility of early activation after cochlear implantation

2019 ◽  
Vol 44 (6) ◽  
pp. 1004-1010
Author(s):  
Chuan‐Hung Sun ◽  
Chan‐Jung Chang ◽  
Chuan‐Jen Hsu ◽  
Hung‐Pin Wu
Keyword(s):  
Cochlear Implantation ◽  
Early Activation

scholarly journals Speech Perception Changes in the Acoustically Aided, Nonimplanted Ear after Cochlear Implantation: A Multicenter Study

2020 ◽  
Vol 9 (6) ◽  
pp. 1758
Author(s):  
Mario A. Svirsky ◽  
Arlene C. Neuman ◽  
Jonathan D. Neukam ◽  
Annette Lavender ◽  
Margaret K. Miller ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Speech Perception ◽  
Cochlear Implant ◽  
Multicenter Study ◽  
Cochlear Implantation ◽  
Hearing Aid ◽  
Demographic Variables ◽  
Residual Hearing ◽  
Quality Signal ◽  
Postoperative Changes

In recent years there has been an increasing percentage of cochlear implant (CI) users who have usable residual hearing in the contralateral, nonimplanted ear, typically aided by acoustic amplification. This raises the issue of the extent to which the signal presented through the cochlear implant may influence how listeners process information in the acoustically stimulated ear. This multicenter retrospective study examined pre- to postoperative changes in speech perception in the nonimplanted ear, the implanted ear, and both together. Results in the latter two conditions showed the expected increases, but speech perception in the nonimplanted ear showed a modest yet meaningful decrease that could not be completely explained by changes in unaided thresholds, hearing aid malfunction, or several other demographic variables. Decreases in speech perception in the nonimplanted ear were more likely in individuals who had better levels of speech perception in the implanted ear, and in those who had better speech perception in the implanted than in the nonimplanted ear. This raises the possibility that, in some cases, bimodal listeners may rely on the higher quality signal provided by the implant and may disregard or even neglect the input provided by the nonimplanted ear.

scholarly journals Evolution of impedance values in cochlear implant patients after early switch-on

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0246545
Author(s):  
Jeff Jia-Fu Wei ◽  
Tao-Hsin Tung ◽  
Lieber Po-Hung Li
Keyword(s):  
Hearing Loss ◽  
Cochlear Implant ◽  
Cochlear Implantation ◽  
Treatment Modality ◽  
Longitudinal Design ◽  
The Past ◽  
Factors Influencing ◽  
Early Activation ◽  
Effective Treatment Modality ◽  
Underlying Mechanisms

Cochlear implantation is currently the most effective treatment modality for severe to profound sensorineural hearing loss. Over the past few years, at the Department of Otolaryngology, Cheng Hsin General Hospital (Taipei, Taiwan), cochlear implant devices have been switched on within 24 hours of their implantation. Differences in impedance evolution after early switch-on for different devices have not been previously discussed. The present study aimed to investigate the impedance evolution of one device and the factors influencing this after early activation. Results are compared to published results of other devices. A total of 16 patients who received Advanced BionicsTM devices and had early activation within 24 hours of implantation, were included in the study. Impedance telemetry was recorded intraoperatively and postoperatively at 1 day, 1 week, 2 weeks, 4 weeks and 8 weeks. A stepwise increase was observed in the impedance evolution. To the best of our knowledge, the present study is the first to investigate the impedance evolution of the different devices after early switch-on within 24 hours of implantation and its influencing factors. Further research with a longitudinal design to compare the differences in electrode impedances between patients activated early versus those activated after a few weeks will be necessary for the disclosure of the underlying mechanisms.

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