Rates of revision and device failure in cochlear implant surgery: A 30-year experience

摘要: Objectives/Hypothesis To characterize revision cochlear implant surgery and quantify rates of device failure. Study Design Retrospective review 235 cases performed at the Sydney Cochlear Implant Center over a period 30 years, between January 1982 June 2011. Methods Patient demographics characteristics were retrospectively extracted from centralized database. Analyses overall cumulative performed. Results During study period, 2,827 primary implantations in 2,311 patients, with 201 implants 191 patients this cohort (109 children 82 adults) undergoing surgeries. The most common indication for was failure (57.8%), followed by migration/extrusion (23.4%), infection/wound complication (17.0%), poor outcome/secondary pathology (6.4%). majority surgeries reimplantations. Overall 8.3% 4.8%, respectively. rate all ages increased linearly 1% per year. significantly higher children, decreased more recently newer generations implants. Conclusions The suggests an ongoing linear relationship time postprimary implantation need surgery. We have formed evidence base that characterizes nature frequency high-volume setting, allowing clinicians to effectively counsel prospective clinics understand burden failure. Level Evidence 4 Laryngoscope 124:2393–2399, 2014