Correlation analysis of the incidence and head position in posterior semicircular canal benign paroxysmal positional vertigo / 中国耳鼻咽喉头颈外科

ABSTRACT

OBJECTIVE To verify the relationship between the incidence and habitual head position in bed in posterior semicircular canal benign paroxysmal positional vertigo(PSC-BPPV), and to provide practical information for the prevention and treatment of BPPV.METHODS There were 208 patients with PSC-BPPV were included in this study. The relationship of affected semicircular canals in PSC-BPPV patients and the habitual head positions in bed were analyzed.RESULTS There were 125 patients who had always taken the same position (right side lying in 85 cases, left side lying in 40 cases), and 83 cases in different positions. The affected PSC-BPPV were consonant with the head positions (Kappa=0.401). With Spearman correlation analysis, we can find that there was correlation between the affected PSC-BPPV and the head position(r=0.203) and age(r=-0.179,P<0.05), but there were no significant correlation with gender.CONCLUSION Habitual head position causes otoliths deposit in PSC at the lowest level during bedrest, and was one of the main factors leading to the ipsilateral PSC-BPPV.