Before and after Treatment Changes of Subjective Visual Vertical Line in Patients with Sudden Deafness and Benign Paroxysmal Positional Vertigo and Their Relationship with Otolith Function Prognosis
LI Xingcheng
XU Jing
Abstract：Objective To report before and after treatment changes of subjective visual vertical(SVV)in in patients with idiopathic sudden sensorineural hearing loss(ISSNHL)and concomitant benign paroxysmal positional vertigo,and their relationship with otolithotic function outcomes.Methods A retrospective analysis was performed on 100 cases of ISSNHL and BPPV admitted to the Department of Otology,the First Affiliated Hospital of Zhengzhou University,from June 2020 to July 2023.Hearing loss was categorized as low frequency sliding(n=12),high frequency sliding(n=18),all frequency sliding(n=32)or total deafness(n=38).SVV deviation from the median(0°)was categorized as low(n=15),medium(n=33)or high(n=52).Multiple variable analysis was conducted for potential effects of SVV deviation on hearing,and clinical data of cases with different levels of SVV deviation were compared.Multiple variable analysis was also conducted for relationship between SVV deviation and treatment outcomes,and correlations between hearing and SVV deviation as well as otolithol function outcomes.Results The SVV-0°,SVV-L30°,SVV-L45°,SVV-L90°,SVV-R30°,SVV-R45°,SVV-R90°,cVEMP and oVEMP results demonstrated statistically significant differences among the four types of hearing loss(P<0.05).SVV-0° results were an independent risk factor for increased severity in sudden hearing loss with concomitant BPPV.Otolith functional characteristics and clinical outcomes showed statistically significant differences among low,medium and high SVV deviation groups(P<0.05),with decreasing correlation as SVV deviation increased(P<0.05).Otolith function parameters also showed statistically significant differences in relation to different levels of SVV deviation(P<0.05).Restricted cubic spline model showed no nonlinear correlation between SVV deviation and disease severity in both genders.Conclusion SVV-0° deviation is a risk factor for severe ISSNHL with concomitant BPPV with a positive correlation.SVV test plays an important role in assessing otolith function and is of great clinical value.
Keywords：idiopathic sudden sensorineural hearing lossbenign paroxysmal positional vertigosubjective visual vertical linesotolithiasis functional prognosis
Publication Date：2025-09-20
Online Publishing Date：2025-09-15(First online date of this platform, not the publication date of the document)
Pages：7( 721-727 )