title: [The roles of otolith organs in the recurrence primary benign paroxysmal positional vertigo].
abstract: OBJECTIVE
  To explore the roles of otolith organs in the occurrence and recurrence of primary benign paroxysmal positional vertigo (BPPV) by vestibular evoked myogenic potential (VEMP) test.
  
  
  METHODS
  We enrolled 17 recurrent primary BPPV patients and 42 non-recurrent primary BPPV patients between September 2014 and November 2014. All patients underwent VEMP tests, including cervical vestibular evoked myogenic potential (cVEMP and ocular vestibular evoked myogenic potential (oVEMP) tests. The abnormal case was defined as non-elicitation or asymmetry rate between bilateral sides is larger than 29%.
  
  
  RESULTS
  Significant difference was found in abnormal rate between cVEMP and oVEMP (P < 0.05 ) in BPPV patients. The abnormal rate of oVEMP was higher than that of cVEMP. Significant difference was found in abnormal rate in oVEMP test between recurrent and non-recurrent groups (P < 0.01) but not in cVEMP( P > 0.05). No significant difference was found in sex and age between recurrent and non-recurrent groups (P > 0.05).
  
  
  CONCLUSIONS
  The impairment of otolith organs, especially the utricle, is related to primary BPPV. Dysfunction of utricle may play a role in recurrence of BPPV. Recurrence of BPPV is not correlated with sex and age.
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Zhou
authors.forename: Youjun
authors.initials: Y
authors.lastname: Yu
authors.forename: Ziming
authors.initials: Z
authors.lastname: Wu
authors.forename: Xinjian
authors.initials: X
authors.lastname: Liu
authors.forename: Xianbing
authors.initials: X
authors.lastname: Chen
mesh_terms: D065635:Benign Paroxysmal Positional Vertigo / Q000503:physiopathology*; D006801:Humans; D010037:Otolithic Membrane / Q000503:physiopathology*; D012008:Recurrence; D012444:Saccule and Utricle / Q000503:physiopathology*; D058585:Vestibular Evoked Myogenic Potentials