title: Relationship between video head impulse test (vHIT) and caloric test in patients with vestibular neuritis.
abstract: OBJECTIVE
  The caloric test is the gold standard for the loss of vestibular function diagnosis. The Video Head Impulse Test (vHIT) assesses the same reflex by using a video- assisted examination of the impulsive maneuver. We intend to compare the variation of results of the vHIT and the caloric test in patients with vestibular neuritis with respect to their initial condition at two different moments of their evolution and to check the level of correlation between them and with that of the DHI test
  
  
  METHODS
  We explored 20 patients with neuritis by using both vHIT and the caloric test on the same day. We assessed the correlation between these two tests and with the DHI test for each patient at two different moments of their evolution.
  
  
  RESULTS
  We calculated gain asymmetry and compared it with the canal paresis, but we found neither a linear correlation between them, nor a correlation between the DHI test or improvement of these two other tests. We conclude that the covert saccades maintain a similar speed whilst present in the VHIT, but the overts diminish their speed over time.
  
  
  CONCLUSIONS
  The VHIT and the caloric test show different responses of the vestibulo-ocular reflex, because they stimulate different frequencies of this reflex. No correlation was found between the VHIT, the caloric test and the DHI test. The tests appear to complement one another.
authors.affiliation: Servicio de ORL, Departamento de Cirugía, Hospital Clínico Universitario de Valencia, Universitat de València, Valencia, España. Electronic address: jauremar88@gmail.com.
authors.forename: Jaume
authors.initials: J
authors.lastname: Redondo-Martínez
authors.affiliation: Servicio de ORL, Hospital Universitario de Torrevieja, Alicante, España.
authors.forename: Carmen
authors.initials: C
authors.lastname: Bécares-Martínez
authors.affiliation: Servicio de ORL, Departamento de Cirugía, Hospital Clínico Universitario de Valencia, Universitat de València, Valencia, España.
authors.forename: Miguel
authors.initials: M
authors.lastname: Orts-Alborch
authors.affiliation: Servicio de ORL, Departamento de Cirugía, Hospital Clínico Universitario de Valencia, Universitat de València, Valencia, España.
authors.forename: Francisco Javier
authors.initials: FJ
authors.lastname: García-Callejo
authors.affiliation: Servicio de ORL, Departamento de Cirugía, Hospital Clínico Universitario de Valencia, Universitat de València, Valencia, España.
authors.forename: Tomás
authors.initials: T
authors.lastname: Pérez-Carbonell
authors.affiliation: Servicio de ORL, Departamento de Cirugía, Hospital Clínico Universitario de Valencia, Universitat de València, Valencia, España.
authors.forename: Jaime
authors.initials: J
authors.lastname: Marco-Algarra
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002150:Caloric Tests; D005260:Female; D005500:Follow-Up Studies; D064087:Head Impulse Test / Q000379:methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012021:Reflex, Abnormal; D012027:Reflex, Vestibulo-Ocular; D012044:Regression Analysis; D012438:Saccades / Q000502:physiology; D020338:Vestibular Neuronitis / Q000175:diagnosis* / Q000503:physiopathology; D014741:Video Recording; D055815:Young Adult
keywords: Caloric test; Diagnosis; Diagnóstico; Dizziness Handicap Inventory; Neuritis vestibular; Prueba calórica; Vertigo; Vestibular neuritis; Video Head Impulse Test; Videonistagmografía; Videonystagmography; Vértigo