Balance function after cochlear implant and inner ear anomaly: Comparison of dynamic posturography

Abstract

Introduction: Patients with sensorineural hearing loss suffer concomitant vestibular dysfunction that is more prevalent in patients with inner ear anomaly and could be aggravated with cochlear implantation. To assess the vestibular dysfunction in patients with cochlear implantation, we compared their results with those of patients with and without inner ear anomaly. Materials and methods: This is a historical cohort study lasting for 20 years on 50 patients with cochlear implantation. All patients underwent dynamic posturography and Bruininks-Oseretsky Test. Results: Twenty-two (44%) of the participants showed some types of inner ear anomaly. The frequency of abnormal Bruininks-Oseretsky Test was 45.5% and 10.7% (P =.005, odds ratio [OR] = 6.9). Abnormal composite was seen in 77.3% and 21.4%, respectively (P