ArticleLaryngoscope investigative otolaryngology2026
Regional Impedance Patterns in Cochlear Implantation: Influence of Demographic and Early Activation.
Article in Laryngoscope investigative otolaryngology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
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. Methods: This retrospective longitudinal cohort study included cochlear implant recipients with normal cochlea implanted with the MED-EL FLEX28. All electrodes were fully inserted via the round window approach. Participants underwent early activation (1 day postoperatively) or classical activation (within approximately 1 month). Electrode impedance was measured intraoperatively and at ≥ 6 months. Associations between age, gender, activation timing, and impedance were analyzed across apical, middle, basal, and overall regions. Results: A total of 360 implanted ears were analyzed. Gender was not significantly associated with impedance. Implantation age demonstrated region-specific associations with impedance behavior, with the strongest findings observed in activation-stratified analyses of the apical electrodes. Mean apical impedance increased from 6.1 ± 2.1 kΩ intraoperatively to 6.9 ± 1.8 kΩ at 6 months. Younger recipients exhibited higher intraoperative apical impedance with a negative age-impedance association ( Conclusions: Implantation age demonstrated a dynamic and region-specific association with impedance behavior, particularly in apical electrodes. Early activation modified postoperative impedance trajectories and attenuated midterm impedance elevation. Level of Evidence: Level 3.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.