Cochlear reimplantations: technical and surgical failures

Abstract

Of 487 cochlear implantations, 3.8% of adults and 4.5% of children underwent a revision surgery. The mean time to device failure was 7.6 years in children and 1.5 year in adults. Causes of revision were seven hard failures, four soft failures, and nine medical reasons. Among the medical reasons, four patients had skin flap infection associated with an extended endaural approach. Audiologic performances were stable or improved following reimplantation in 90% of cases. We had two cases of electrode array misplaced into the vestibular system.

Cochlear implant failures: lessons learned from a UK centre

“…In our series, 20.8 per cent of the The cochlear re-implantation incidence in this series is comparable to those reported by other studies. [3][4][5][6][7][8][9][10][11] However, the incidence of total device failure may be higher than figures published by some cochlear implant manufacturers. Indeed, the 3.9 per cent rate found in Nucleus patients was higher than the 0.2-2.4 per cent rate reported by the manufacturer.…”

Low Pediatric Cochlear Implant Failure Rate<subtitle>Contributing Factors in Large-Volume Practice</subtitle>

“…The adult literature suggests a rate of CIri ranging from 4% to 13%. 4,5 Although some authors 6,7 have suggested that this rate is lower than that in the pediatric population, the CIri rate in children in other reports ranges from 4% to 15.4%. [7][8][9][14][15][16][17][18] Of these pediatric series, 7-9,14-18 surgical technique is not described except in 3 reports 8,14,18 that do not state whether suture fixation was used.…”

Electrode Misdirection into the Superior Semicircular Canal: Complication of Cochlear Implantation by Round Window Approach

“…Overall complication rates requiring revision surgery vary from 3.8% to 5.1%, and a misplaced electrode is reported to be one of the most common major complications, next to device failure [1,2] . Previous case reports have described misplaced electrodes in the vestibule or semicircular canals.…”