Cervical vestibular evoked myogenic potential and video head impulse test findings in benign paroxysmal positional vertigo

Abstract

Background Benign paroxysmal positional vertigo (BPPV) is the most common cause of vertigo. Approximately 20% of all dizziness is due to BPPV. Objective To assess the peripheral vestibular function in a group of patients with BPPV versus group of normal population by using the cervical vestibular evoked myogenic potential (cVEMP) and video head impulse test (vHIT). Materials and methods This is a comparative cross-sectional study. A total of 60 individuals [20 apparently healthy controls (40 ears) and 40 patients with BPPV, who initially were diagnosed by Dix–Hallpike test/supine roll test], were included in the study. All participants gave their written consent before participation in the study. The control as well as the study group was subjected to basic audiological evaluation and vestibular evaluation. Results Regarding the vHIT, there was a statistically significant difference between control and study groups regarding the left vertical canal gain and the asymmetry (P Conclusion Significant abnormal cVEMP in BPPV may indicate saccular involvement in the BPPV pathophysiology, which needs more research to prove or disprove it. Abnormal vHIT gain and asymmetry of the left vertical canal only needs more research in a large sample size.