title: Cochlear re-implantation: lessons learnt and the way ahead.
abstract: Conclusion A cochlear re-implantation procedure is undesirable; however, the cochlear implant surgeon may have to perform a re-implantation procedure occasionally for various reasons. Following standard techniques, implant performance comparable with primary implantation may be achieved. Objective To study the causes and outcomes of cochlear re-implantation in an Asian Indian population. Study design Retrospective analysis of clinical charts over an 18-year period with prospective follow-up of patients. Methods The charts of 534 patients, who underwent cochlear implant, at an Otorhinolaryngology institutional Centre, from January 1997 to January 2015 were studied. Of these, the charts of 18 patients who underwent cochlear re-implantation were studied. The causes and audiological and speech outcomes were analysed. Results Eighteen patients (3.4%) underwent cochlear re-implantation for various reasons. The commonest indication was device failure in seven patients (39%), followed by electrode extrusion in five (28%), trauma in three (11%), electrode migration in two (11%) and improper electrode placement in one (6%) patient. The audiological performance tests and speech tests either remained the same or improved from those achieved for patients undergoing primary implantation, in 87% patients.
authors.affiliation: a Department of Otolaryngology-Head & Neck Surgery , All India Institute of Medical Sciences & Army Hospital, Research & Referral , New Delhi , India.
authors.forename: Uma
authors.initials: U
authors.lastname: Patnaik
authors.affiliation: a Department of Otolaryngology-Head & Neck Surgery , All India Institute of Medical Sciences & Army Hospital, Research & Referral , New Delhi , India.
authors.forename: Kapil
authors.initials: K
authors.lastname: Sikka
authors.affiliation: a Department of Otolaryngology-Head & Neck Surgery , All India Institute of Medical Sciences & Army Hospital, Research & Referral , New Delhi , India.
authors.forename: Shivani
authors.initials: S
authors.lastname: Agarwal
authors.affiliation: a Department of Otolaryngology-Head & Neck Surgery , All India Institute of Medical Sciences & Army Hospital, Research & Referral , New Delhi , India.
authors.forename: Rakesh
authors.initials: R
authors.lastname: Kumar
authors.affiliation: a Department of Otolaryngology-Head & Neck Surgery , All India Institute of Medical Sciences & Army Hospital, Research & Referral , New Delhi , India.
authors.forename: Alok
authors.initials: A
authors.lastname: Thakar
authors.affiliation: a Department of Otolaryngology-Head & Neck Surgery , All India Institute of Medical Sciences & Army Hospital, Research & Referral , New Delhi , India.
authors.forename: Suresh C
authors.initials: SC
authors.lastname: Sharma
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D019929:Cochlear Implantation / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D012086:Reoperation / Q000706:statistics & numerical data*; D012189:Retrospective Studies; D055815:Young Adult
keywords: Cochlear implant; complications; outcomes; re-implantation