Evaluation of vestibular system in patients undergoing adult cochlear implant operationation

ABSTRACT Evaluation of Vestibular System in Patients Undergoing Adult Cochlear Implant Operationation Aim: In this study, it was aimed to evaluate the vestibular system and to reveal possible results in adult patients with cochlear implantation. Material and Method: The study was planned as randomized controlled. This study was carried out with 54 participants, including 24 patients who underwent cochlear implantation operation in Inonu University Faculty of Medicine Turgut Özal Medical Center, Department of Otorhinolaryngology and 30 volunteers who did not have any complaints about the vestibular system in their history. Bedside examination, Videonystagmography test and bitermal caloric test, Dizziness Handicap Inventory (DHI) and Vestibular Disorders Activities of Daily Life Scale (VDADL) were applied to patients and volunteers. Results: In 20.8% of patients who underwent cochlear implant operation, deviations were observed in Romberg, Fukuda and Babinsky weil tests. A significant difference was found compared to the control group (p = 0.013 for all three parameters). There was a significant difference between the total eye velocity of the patients in the cochlear implant operation and the control group (p = 0.026). Canal paresis was detected in 20.8% of the patients who underwent cochlear implant operation and a significant difference was found between the control group (p = 0.013). Bilateral caloric response weakness was detected in 16.7% of patients who underwent cochlear implant operation and a significant difference was found between the control group (p = 0.034). A significant difference was found between the two groups in the physical, functional subgroups of Dizziness Disability Questionnaire and when the total scores were compared (respectively p = 0.018, p = 0.010, p = 0.020). Conclusion: As a result of the study, it was found that cochlear implant operation affects the vestibular system in adults. It is possible that vestibular pathologies can be treated with vestibular rehabilitation and medical treatment and that patients can survive socially. Keywords: Cochlear implant, Vestibular system, Videonystagmography test