Regional Impedance Patterns in Cochlear Implantation: Influence of Demographic and Early Activation

OBJECTIVES: To evaluate the effects of age and gender on electrode impedance during cochlear implant surgery and at 6 months after implantation, and to determine whether activation timing modifies these relationships across cochlear regions.

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Demographic factors (age, sex) and early activation timing appear to influence regional electrode impedance patterns, but until clinical implications for programming or outcomes are confirmed, no immediate change to cochlear implant activation protocols is supported.

Understanding how demographic variables shape impedance trajectories could eventually inform more personalised cochlear implant programming and improve long-term device outcomes.

1. 01Patient age and gender were assessed as predictors of electrode impedance in cochlear implant recipients.
2. 02Impedance was measured intraoperatively and again at 6 months post-implantation.
3. 03Early device activation was evaluated for its effect on regional impedance patterns along the electrode array.
4. 04Regional differences in impedance across the cochlea were a key focus.
5. 05Findings may have implications for device programming, but clinical translation is not yet established.

PMID

42528930

DOI

10.1002/lio2.70512.

Journal

Laryngoscope Investigative Otolaryngology

Publication type

research_article

Evidence level

2b

Population

Cochlear implant recipients across varying ages and sexes

Intervention

Assessment of electrode impedance by patient age, gender, and early device activation

Comparator

Comparison across demographic subgroups and activation timing conditions