Video Head Impulse test and Cervical Vestibular Evoked Myogenic Potentials outcomes in Diabetes

Document Type : Original Article

Authors

1 Ent department (audiovestibular medicine), faculty of medicine zagazig university, zagazig, egypt.

2 Audio-Vestibular Medical Unit, ENT department, Faculty of Medicine, Zagazig University, Sharkia, Egypt

3 Audiovestibular Medical Unit, ENT department ,Faculty of Medicine , Zagazig University ,Sharkia , Egypt.

Abstract

Introduction: Diabetes Mellitus is a worldwide chronic systemic disorder that is characterized by deficiency in insulin secretion from pancreas and/or impairment in its action in its target tissues, which affects daily activities and shortens lifetime, requiring a lifelong management program. This results in glucose impairments in inner ear leading to vestibular and/or auditory dysfunctions.
Objectives: The aim of this study was to assess the impact of type 1 DM and type 2 DM on the vestibular system using vHIT and cVEMP.
Patients and methods: This study included 45 patients divided into 3 groups: 15 type 1 DM (Group 1), 15 type 2 DM (Group 2) and 15 apparently healthy age and sex matched controls (Group 3). All patients were subjected to: Full history taking, Otoscopic examination, Basic audiological examination, Vestibular evaluation including: The arabic questionnaire version of the "Dizziness Handicap Inventory" (DHI), cervical vestibular evoked myogenic potentials and video head impulse test.
Results: The results of this study revealed that there were a statistical difference in P13, N23 latencies of cVEMPs, lateral canal gain of vHIT and in lateral canals gain asymmetry. On the other hand, there were no statistical differences in peak to peak amplitude or asymmetry ratio and in posterior and anterior canals gain, also no significant differences in RALP and LARP gain asymmetry between control and diabetic groups.

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