title: [Vestibular Dysfunction in Patients with Sudden Sensorineural Hearing Loss without Vertigo].
abstract: OBJECTIVE
  To observe the vestibular dysfunction in sudden sensorineural hearing loss (SSHL) patients without vertigo.
  
  
  METHODS
  Forty-two cases of unilateral SSHL without vertigo were enrolled in the study from May 2012 to May 2014. All patients underwent air conducted sound elicited oVEMP and cVEMP respectively. Some of them also received caloric test. Sixty-two SSHL patients with vertigo and twenty-five age-and gender-matched normal subjects were recruited as controls to analyze the vestibular dysfunction in SSHL patients without. vertigo.
  
  
  RESULTS
  Abnormal oVEMP was observed in 54. 8% affected ears without vertigo (23/42), 64. 5% ears with vertigo (40/62), and 26. 0% normal ears (13/50). Abnormal cVEMP was observed in 52. 4% affected ears without vertigo (22/42), 48. 4% ears with vertigo (30/62), and 14. 0% normal ears (7/50). Caloric test was operated in 21 SSHL patients without vertigo and 29 patients with vertigo. Abnormal caloric test was observed in 52.4% (11/21) SSHL patients without vertigo and 75. 9% (22/29) SSHL patients with vertigo respectively. Statistical significance was found in oVEMP and cVEMP rates between SSHL without vertigo and normal group (P<0. 01). However, no significant statistical difference was found in oVEMP, cVEMP rates and caloric test between SSHL without vertigo and SSHL with vertigo group (P>0. 05).
  
  
  CONCLUSIONS
  Vestibular function could be damaged in SSHL patients without vertigo. The abnormal rates of oVEMP, cVEMP and caloric test in SSHL patients without vertigo were similar to that of SSHL patients with vertigo. The appearance of vertigo might be irrelevant to the range and extent of vestibular dysfunction.
authors.forename: Xiao-rong
authors.initials: XR
authors.lastname: Niu
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhang
authors.forename: Peng
authors.initials: P
authors.lastname: Han
authors.forename: Cai-qin
authors.initials: CQ
authors.lastname: Wu
authors.forename: Xiao-ying
authors.initials: XY
authors.lastname: Du
authors.forename: Jing-jing
authors.initials: JJ
authors.lastname: Li
authors.forename: Hui
authors.initials: H
authors.lastname: Yang
authors.forename: Xiao-hong
authors.initials: XH
authors.lastname: Jing
authors.forename: Min
authors.initials: M
authors.lastname: Xu
mesh_terms: D002150:Caloric Tests; D006319:Hearing Loss, Sensorineural / Q000503:physiopathology*; D003639:Hearing Loss, Sudden / Q000503:physiopathology*; D006801:Humans; D013016:Sound; D014717:Vertigo; D015837:Vestibular Diseases / Q000503:physiopathology; D058585:Vestibular Evoked Myogenic Potentials; D014724:Vestibular Function Tests; D014722:Vestibule, Labyrinth / Q000503:physiopathology*