The French Cochlear Implant Registry (EPIIC): Cochlear implantation complications

Area of Science:

• Otolaryngology
• Neurosurgery
• Medical Device Technology

Background:

• Cochlear implantation is a complex surgical procedure to restore hearing in individuals with severe to profound sensorineural hearing loss.
• Evaluating peri- and post-operative complications is crucial for patient safety and optimizing outcomes.
• Understanding risk factors can help tailor surgical approaches and patient selection.

Purpose of the Study:

• To assess the incidence and types of peri- and post-operative complications following cochlear implantation.
• To identify risk factors associated with these complications.
• To analyze complication rates in the youngest and oldest patient populations.

Main Methods:

• Retrospective analysis of a large cohort of cochlear implant patients from the EPIIC database in France (2012-2016).
• Inclusion of 3483 adults and 2245 children, with detailed recording of demographic, surgical, and complication data (major/minor).
• Statistical analysis to compare complication rates based on implantation type, cochlear malformation, and age groups.

Main Results:

• The overall complication rate was 6.84%.
• Higher complication risks were observed for initial versus reimplantation and bilateral versus unilateral procedures (P<0.0001).
• Cochlear malformation was associated with increased complications (P=0.002), but age extremes (infants <1 year, elderly >80/90) showed no increased risk.

Conclusions:

• Cochlear implantation is a safe surgical technique with a low incidence of complications.
• Age is not a limiting factor for cochlear implantation, as both very young and elderly patients exhibit similar complication rates.
• The safety profile supports offering cochlear implantation to all eligible patients, irrespective of age.