Analysis of Factors that Affect the Result of Vestibular Rehabilitation in the Treatment of Benign Paroxysmal Position Vertigo / 대한이비인후과학회지

ABSTRACT

BACKGROUND AND OBJECTIVES: Canalith repositioning procedure (CRP) is an effective treatment for benign paroxysmal positional vertigo (BPPV). However, there is a significant number of patients who require multiple treatment visits for reliefs of symptoms. The purpose of this study is to identify factors that may be associated with these difficult to treat cases. MATERIALS AND METHODS: A retrospective review was made of 179 patients who were diagnosed as BPPV. 20 patients who required more than three treatment visits for CRP were included in this study. Statistical analysis included age and sex of patients, the kind of involved semicircular canal (SCC), direction of nystagmus, latency of nystagmus on electronystagmography (ENG) and duration of symptoms. RESULTS: There was no significant statistical association between the number of treatment visit and patient's age, sex. Although significant statistical association was not found, the therapeutic efficacy of lateral SCC BPPV was lower than that of posterior SCC BPPV. In the cases where the direction of nystagmus was ageotrophic, the efficacy of CRT was decreased and statistical significant association was found. Also when short latency of nustagmus on ENG and long duration of symptoms appeared, more trial of CRP was needed and statistical significant association was found. CONCLUSION: In the treatment of BPPV by CRP, we can consider latency of nystagmus on ENG, duration of symptoms, direction of nystagmus and type of involved semicircular canal as prognostic factors.