Cochlear Reimplantation and Its Etiology at the Antwerp University Hospital: A 29-Year, Single-Center Experience in Children and Adults

Background: As the number of cochlear implantations is increasing and devices are aging, the amount of revision cochlear implant surgery is becoming more frequent. The aim of this study is to present an institutional experience of cochlear reimplantation rate and its etiologies. Methods: Patients who underwent revision cochlear implant surgery at the Antwerp University Hospital between August 1993 and August 2022 were retrospectively reviewed. Results: A total of 1313 cochlear implantations were performed at the Antwerp University Hospital (UZA) over a period of 29 years. There have been 60 cochlear reimplantations in the center, 6 of which received their first implant in another medical center than UZA. Therefore, the institutional failure rate is 4.3% (54/1253). Reimplantation in children (