Related Experiment Video
Updated: Jun 26, 2026

Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction
Published on: August 30, 2019
Risk factors for recurrence of benign paroxysmal positional vertigo
Hitoshi Tanimoto1, Kiyoshi Doi, Tasuku Nishikawa
1Department of Otolaryngology-Head and Neck Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan.
Objective:
To assess the results of treatment for a first episode of benign paroxysmal positional vertigo (BPPV) and risk factors for recurrence.
Study Design:
Retrospective chart review of 148 BPPV patients at a tertiary care referral centre.
Materials And Methods:
The canalith repositioning procedure (CRP) was performed until vertigo and nystagmus were resolved. Using multivariate logistic regression, we estimated the relationship between the rate of BPPV recurrence within 1 year and various risk factors for BPPV.
Results:
Among the 145 patients after successful manoeuvre or spontaneous resolution, BPPV recurred in 31 patients (21%) within 1 year. Patients with recurrent BPPV in the posterior semicircular canal required more CRP sessions and a longer period. The rate of BPPV recurrence in patients with endolymphatic hydrops (75%) was significantly higher than in those without (odds ratio 17; 95% confidence interval 2.9-101). Both the first episode of BPPV and recurrent BPPV affected the same ear associated with endolymphatic hydrops in all patients with this complication.
Conclusions:
Our data suggest that endolymphatic hydrops is a risk factor for recurrence of BPPV and that prevention of recurrent BPPV is important for control of endolymphatic hydrops.
Related Concept Videos
Equilibrium and Balance
Dysrhythmias II: Classification of Tachyarrhythmias
The Vestibular System
Mitral Valve Prolapse II: Assessment and Management
Pathophysiology of Vomiting
Increased Intracranial Pressure ll: Pathophysiology
