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Updated: Feb 11, 2026

Electrically Evoked Stapedius Reflex Measurements in Cochlear Implantation and Its Application in the Postoperative Fitting Process
Published on: June 21, 2024
Revision cochlear implant surgery in children: Surgical and audiological outcomes
Jeffrey Yeung1, Amanda Griffin1, Stephen Newton2
1Department of Otolaryngology and Communication Enhancement, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts.
Objectives/Hypothesis:
To determine the incidence of cochlear implant failure and to examine surgical and audiological outcomes.
Study Design:
Retrospective review, case series.
Methods:
This study sought indications for revision surgery, surgical findings, and outcomes, and audiological outcomes in pediatric cochlear implant patients. Pre- and postcochlear reimplantation word recognition performance was analyzed using a modified version of the Pediatric Ranked Order Speech Perception (PROSPER) score.
Results:
Over a 20-year period, a total of 868 cochlear implants were performed in 578 patients. The overall institutional reimplant rate was 5.9%. The indications for explantation were hard failure (30), soft failure (23), and medical/surgical indication (13). A significant portion of devices belonged to vendor recalled batches (15) or were damaged by head trauma (eight). Full electrode insertion was achieved in all 62 reimplantations. Post-reimplantation Boston Children's Hospital modified PROSER scores were either stable or improved compared to pre-reimplantation scores.
Conclusions:
The need for cochlear implant revision/reimplantation is infrequent, but the rate is not inconsequential. Hard and soft device failures account for the majority of reimplants. Surgical complications during reimplantation is low, and post-reimplantation audiological performance is excellent.
Level Of Evidence:
4. Laryngoscope, 2619-2624, 2018.
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