Vestibular system evaluation by VHIT, C-VEMP, O-VEMP in adult patients with type 1 diabetes mellitus

Objective: The aim of this study is comparing the VHIT, C-VEMP, O-VEMP tests of adult patients with type 1 diabetes mellitus (DM) and control group volunteers were examined whether the peripheral vestibular system is affected in the diabetic patient group. Methods: This study was conducted in the Otology clinic in 2020 with 21 control group who applied to Başkent University Department of Otorhinolaryngology and 20 patient group participants with Type 1 DM who applied to the Department of Endocrinology. After a detailed Ear Nose Throat examination, Tympanometry, VHIT, C-VEMP, O-VEMP tests were performed to all participants. Results: Of the 41 participants in the study, 23 were women and 18 were men. The average age of the healthy control group was 31,14±7,38 and the average age of the patient group was 29,8±8,50. When we compared C-VEMP P1, N1 latencies of type 1 DM patients with the control group, we obtained prolonged results in the P1 and N1 latencies of the patient group. A statistically significant difference was found between the results (p<0,05). In addition, no statistically significant difference was found between the groups in the amplitudes of C-VEMP and the latency and amplitude results of VHIT and O-VEMP tests. İn Conclusion, we think that the saccule macula and / or the inferior vestibular nerve pathway are affected due to the delay in the patient group C-VEMP lattices. When the literature information and our results are evaluated, we think that more comprehensive studies are needed on the evaluation of the vestibular system in type 1 DM patients. Key words: video head impulse test, vestibular evoked myogenic potentials, type 1 diabetes mellitus.