Cochlear Implant
Conditions
Keywords
cochlear implant, CI532, CI512, CI522, electrode array, perimodiolar, electrophysiology
Brief summary
Background The authors' aim was to compare the influence of various electrode designs on selected objective and subjective clinical outcomes for cochlear implant recipients using the same model of receiver-stimulator, Cochlear™ Nucleus® Profile Series and sound processor. Methods A multicenter study with subjects with profound sensorineural hearing loss, who were implanted and followed up in two tertiary centers. A total of 54 ears were implanted with Cochlear™ Nucleus® CI532, 51 with Cochlear™ Nucleus® CI522 and 54 with the Cochlear™ Nucleus® CI512. Implant loss and intraoperative electrophysiological tests (electrically evoked stapedial reflex threshold \[ESRT\], neural response telemetry threshold \[T-NRT\] and impedance), postoperative data (C-level, T-level, dynamic range, T-NRT and power consumption) and intracochlear position of the active electrode were analyzed with Nucleus Custom Sound 4.4 software.
Interventions
DEVICEcochlear implant
cochlear implant surgery
Sponsors
Szeged University
Study design
Observational model
CASE_CONTROL
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Healthy volunteers
No
Inclusion criteria
* successful cochlear implantation with CI532 or CI512 or CI522 * gave informed consent
Exclusion criteria
* unsuccessful cochlear implantation
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Intraoperative measurements | 1 day | Intraoperative impedance (kOhm) of the stimulating electrode with different types of cochlear implants. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Postoperative measurements | 3 months | Postoperative neural response telemetry threshold (T-NRT; current unit) with different types of cochlear implants |
Countries
Hungary
Outcome results
None listed