Twenty years of experience in revision cochlear implant surgery: signs that indicate the need for revision surgery to audiologists


BATUK M. , Cinar B. , YARALI M. , BAJİN M. D. , SENNAROĞLU G. , SENNAROĞLU L.

JOURNAL OF LARYNGOLOGY AND OTOLOGY, vol.133, no.10, pp.903-907, 2019 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 133 Issue: 10
  • Publication Date: 2019
  • Doi Number: 10.1017/s0022215119001919
  • Title of Journal : JOURNAL OF LARYNGOLOGY AND OTOLOGY
  • Page Numbers: pp.903-907
  • Keywords: Cochlear Implantation, Reimplantation, Hearing Loss, Reoperation, Surgery, REIMPLANTATION, ELECTRODE

Abstract

Objective To report device failures, audiological signs and other reasons for revision cochlear implant surgery, and discuss indications for revision surgery. Methods Revision procedures between November 1997 and August 2017 were retrospectively analysed. Over 20 years, 2181 cochlear implant operations were performed, and 114 patients underwent 127 revision operations. Results The revision rate was 4.67 per cent. The full insertion rate for revision cochlear implant surgery was 88.2 per cent. The most frequent reasons for revision surgery were: device failure (59 per cent), wound breakdown (9.4 per cent) and electrode malposition (8.7 per cent). The device failure rate was: 2.78 per cent for Advanced Bionics, 1.82 per cent for Cochlear and 5.25 per cent for Med-El systems. The number of active electrodes was significantly increased only for Med-El devices after revision surgery. The most common complaints among 61 patients were: gradually decreased auditory performance, sudden internal device shutdown and headaches. Conclusion The most common reason for revision surgery was device failure. Patients should be evaluated for device failure in cases of: no hearing despite appropriate follow up, side effects such as facial nerve stimulation, and rejection of speech processor use in paediatrics. After revision surgery, most patients have successful outcomes.