Results of brainstem evoked response in patients with vestibular complaints.
Otoneurological evaluations are based on tests which investigate auditory and vestibular disorders, including brainstem evoked auditory potentials and vecto-electronystagmography.


OBJECTIVE
to describe the results from the otoneurological assessment of patients with vestibulocochlear complaints, normal hearing individuals and patients with hearing loss, and we will compare them to a control group.


METHODS
Cross-sectional, retrospective, observational study, held with 56 dizzy patients assessed by means of audiometry, vecto-electronystagmography and brainstem evoked auditory potential, broken down into Group A, with 31 normal-hearing individuals and Group B with 25 hearing loss patients, compared to the control group made up of ten normal-hearing asymptomatic individuals.


RESULTS
Patients from groups A and B were compared to the Control Group, although with values within the normal range. A common finding for both groups was the lack of wave I at 80 dBHL and it happened bilaterally in four individuals (12.9%) and unilaterally in three (9.6%) for Group A; and bilaterally in eight individuals from Group B (32%). In the two cases in which vecto-electronystagmography showed central vestibular alteration, there were no changes to the evoked potential parameters.


CONCLUSIONS
patients with vertigo, normal-hearing and hearing loss individuals had increased absolute latencies when compared to the Control Group.
Munaro
Gisiane
G
Veterinary Medicine Program, Head of the Morphology Department, Universidade Federal da Santa Maria, Brazil.
Silveira
Aron Ferreira da
AF
Rossi
Angela Garcia
AG
Korbes
Daiane
D
Finkler
Andréa Dulor
AD
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001301:Audiometry, Pure-Tone; D016022:Case-Control Studies; D003430:Cross-Sectional Studies; D004244:Dizziness / Q000503:physiopathology*; D004584:Electronystagmography / Q000379:methods; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology*; D034381:Hearing Loss / Q000503:physiopathology*; D006801:Humans; D008875:Middle Aged; D012189:Retrospective Studies; D014717:Vertigo / Q000503:physiopathology*; D055815:Young Adult