The findings of surgical stage of cochlear implantation

Abstract

The authors analyzed the records of surgery for cochlear implantation (CI) of 261 patients aged 8 months through 16 years. All CI operations were performed at Republican Center for Research and Practice in Otolaryngology at the period of 2010-2017 according to our methods and using the techniques providing the minimal degree of injuries and complications. The surgical findings have been revealed in 56 (21.5 %) of 261 patients, the total number of findings is 60. The detected anatomical variants of the middle and inner ear structure were grouped according to the principle of their relationship to a certain stage of CI: the access to the middle ear cavity – 4 cases (6.66%), the access to the inner ear – 19 (31.6%), the formation of the implant receiver bed – 30 (50%). The specific features of the facial nerve position have been referred to the separate group. Each 5th patient (21.5%) had anatomical features complicating the surgery and increasing the risk of complications occurrence, in every 11th patient (8.8%) the anatomical features complicated the access to inner ear.