Active head rotation in benign positional paroxysmal vertigo.
Benign Positional Paroxysmal Vertigo (BPPV) is one of the most common vestibular diseases and the active head rotation test one of the most modern methods of vestibular function assessment.


OBJECTIVE
this study aims to verify if the active head rotation test may reveal signs of horizontal and/or vertical vestibulo-ocular reflex dysfunction in vertigo patients suspected for BPPV.


METHODS
retrospective series study.


METHODS
Neurotological evaluation including computerized electronystagmography and active head rotation on the horizontal and vertical axes were conducted in 100 patients suspected for BPPV patients.


RESULTS
Isolated or associated abnormalities of the horizontal and/or vertical vestibulo-ocular reflex gain, phase and symmetry were indicative of vestibular involvement and found in 77.0% of the BPPV patients.


CONCLUSIONS
the active head rotation test revealed horizontal and/or vertical vestibulo-ocular reflex dysfunctions in a relevant number of BPPV patients.
Ganança
Fernando Freitas
FF
EPM, UNIFESP, Brazil. otoneuro@unifesp.epm.br
Ganança
Cristina Freitas
CF
Caovilla
Heloisa Helena
HH
Ganança
Maurício Malavasi
MM
Albernaz
Pedro Luiz Mangabeira
PL
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004584:Electronystagmography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011187:Posture / Q000502:physiology*; D012027:Reflex, Vestibulo-Ocular / Q000502:physiology*; D012189:Retrospective Studies; D012399:Rotation; D012680:Sensitivity and Specificity; D014717:Vertigo / Q000503:physiopathology*