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Related Experiment Video

Updated: Jul 5, 2025

Author Spotlight: Advancements in Impedance Monitoring for Cochlear Implant Surgery
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Changes in Revision Cochlear Implantation and Device Failure Profiles.

Bokhyun Song1, Subi Oh1, Doyun Kim2

  • 1Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.

Clinical and Experimental Otorhinolaryngology
|January 16, 2024
PubMed
Summary

Revision cochlear implantation (RCI) rates remain stable, but device failure is the primary reason for revision. New complications like flap retention issues and electrode tip fold-over are emerging, especially with newer cochlear implant models.

Keywords:
Cochlear ImplantDevice FailureRevision SurgerySurvival Rate

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Area of Science:

  • Otolaryngology
  • Biomedical Engineering
  • Medical Device Technology

Background:

  • Cochlear implantation (CI) technology is rapidly advancing, with expanding indications for use.
  • Understanding the evolving profile of revision CI (RCI) is crucial for optimizing patient outcomes and device longevity.

Purpose of the Study:

  • To investigate the changing characteristics and reasons for RCI.
  • To explore the clinical implications of these evolving RCI trends.

Main Methods:

  • Retrospective chart review of 1,430 cochlear implantations (CIs) performed between October 2001 and January 2023.
  • Analysis of RCI rates and causes, stratified by manufacturer and device model.
  • Kaplan-Meier and Cox proportional hazards analyses for device survival and RCI associations.

Main Results:

  • 73 (5.1%) CIs required RCI, with device failure being the most common reason (54.8%).
  • Newer complications include flap retention issues and electrode tip fold-over, particularly with specific newer implant models.
  • Overall 10-year cumulative and device survival rates were 93.4% and 95.8%, respectively; significant differences in survival rates were noted across manufacturers (excluding recalled models).

Conclusions:

  • Device failure remains the leading cause of RCI, despite stable overall CI survival rates.
  • The nature of complications necessitating revision has shifted, highlighting potential challenges with newer cochlear implant devices.
  • Clinicians must stay informed about these evolving RCI trends to manage device failures and reoperations effectively.