Long-Term Results of the Cochlear Implant in Patients with Otosclerosis

Abstract

Introduction: Otosclerosis is a bone dysplasia of the optic capsule that promotes progressive metabolic derangement, and can lead to profound hearing loss.Aim: Compare the postoperative results in patients undergoing cochlear implant with otosclerosis compared with patients with other causes of deafness Design: Retrospective cohort study. Materials and methods:Compare cochlear implant results in otosclerosis patient to those to matched pair control group within five years with cochlear implant program -Comfort and Threshold, speech test sentences, monosyllabic and disyllabic, audiometry -gender, age at implantation, duration of deafness.Results: 17 with otosclerosis and 36 with other causes. Patients with otosclerosis had a mean age of 50.2 years and the control group, mean age of 40.8 years at the time of implantation (p <0.05). The duration of deafness until the time of implantation showed no significant difference between the groups of patients. When assessed for the speech sentences, monosyllabic and disyllabic test found no statistical difference was found between the otosclerosis and other losses' groups. Observed greater stimulation of the facial nerve in otosclerosis patients were used when straight electrodes. Conclusion:Otosclerosis patients' implanted showed good surgical results, despite the greater number of complications presented the stimulation of the facial nerve. These results are comparable to the study of patients in the control group with statistical difference between them, despite the progressive feature of otosclerosis disease