[A follow-Up Study with the Video Head Impulse Test for the patients with vestibular neuritis]

Objective:To detect the impairment degree and recovery process of the semicircular canals of patients with vestibular neuritis（VN） by video head impulse test（vHIT） over different periods. Method:The clinical data of patients with VN, who were diagnosed by Vertigo clinic'physicians in the Department of ENT, Dalian Municipal Central Hospital from Sept. 2018 to Sept. 2019, were analyzed and followed up at 1 and 3 month. The damage degree and recovery process of each semicircular canal function were evaluated by vHIT. Result:During the onset period, 89.7% horizontal semicircular canal HSC, 86.2% anterior semicircular canal ASC and 44.8% posterior semicircular canal PSC were abnormal in 29 patients. 23.8% HSC were back to normal, 75.0% ASC were back to normal, 15.4% PSC were back to normal at 1 month; 47.1% HSC were back to normal, 87.5%ASC were back to normal, 25.0% PSC were back to normal at 3 month. Conclusion:vHIT can effectively and dynamically detect the damage and recovery of the high-frequency region of the semicircular canal in patients with VN; the damaged function of the ASC is best recovered, followed by the HSC.