vestibular Flashcards
(13 cards)
if a patient reports dizziness lasting for seconds, what are 3 causes?
BPPV
perilymph fistula
orthostatic hypotension
if a patient reports dizziness lasting for minutes, what are two causes?
TIA
migraines
if a patient reports dizziness lasting for hours/days, what is a possible cause?
meniere’s disease
how is spontaneous nystagmus named?
the direction of the fast phase and plane of motion
how do we test smooth pursuit?
move finger horizontally from center to 30 deg right, then 30 deg left, then vertically 30 deg and 30 down
what are we looking for in skew deviation?
cover and uncover eyes: quick vertical gaze w saccadic correction is abnormal
what is the clinical implication for abnormal convergence? what is the normal range for this?
5cm or less
pt needs eyes to converge when reading
what is a normal result for optokinetic nystagmus?
rapid smooth saccadic movements when pt is watching a striped card move side to side in front of them
what are 4 tests of VOR?
VOR
VORc
Head Thrust Test
Dynamic Visual Acuity Test
3 tests for visual system with light fixation removed? what are we testing here?
head shaking nystagmus
spontaneous nystagmus
gazeholding nystagmus
otolith function
what are the 8 tests of the oculomotor exam?
spontaneous nystagmus gaze evoked nystagmus extraocular ROM Smooth pursuit Skew Deviation Saccades Convergence Optokinetic Nystagmus
what 3 tests of the otoliths?
SVV-Subjective Visual Vertical aka “The Bucket Test”
Ocular Tilt Reaction
Cover-cross Cover Test
what are the BPPV tests?
Dix-Hallpike
Sidelying
