Abstract

Objectives
To investigate the correlation between subjective residual dizziness and objective postural imbalance after successful canalith repositioning procedure (CRP) in benign paroxysmal positional vertigo (BPPV) by using questionnaires and modified clinical test of sensory integration and balance (mCTSIB).
Methods
Total 31 patients with BPPV were included prospectively in the study. All included patients were successfully treated after initial CRP and their symptoms and nystagmus disappeared. In 2 weeks after CRP, all patients were asked to fill out the questionnaire including both dizziness handicap inventory (DHI) and visual analog scale (VAS). We also conducted mCTSIB in 2 weeks after CRP. We divided patients with two groups according to VAS: RD (residual dizziness) group, VAS>0; non-RD group, VAS=0. We compared age, number of CRP, rates associated with three semicircular canals, DHI score and mCTSIB results between two groups. In addition, we analyzed the correlation between DHI score and mCTSIB results.
Results
There were no significant differences of age, number of CRP and rates associated with three semicircular canals between two groups. RD group showed significantly higher DHI score and abnormal mCTSIB results than non-RD group (p<0.05). DHI score and the number of abnormal mCTSIB showed statistically significant correlation.
Conclusions
We demonstrated the correlation between DHI score and mCTSIB after successful CRP for BPPV. It also represents that subjective residual dizziness is correlated with objective postural imbalance even after successful CRP. Therefore, mCTSIB would be useful test to evaluate both residual dizziness and postural imbalance after CRP in BPPV. Key words: Benign paroxysmal positional vertigo

• Keywords: Benign paroxysmal positional vertigo; Dizziness; Posture balance; Questionnaire;