Exam 2 Part 5 Flashcards
How many people are affected annually by balance dysfunction?
7 million
Balance dysfunction is the number _ complaint for those over the age of 70 and _ for all patients
1, 3
_ in _ people will have dizziness or balance dysfunctions in their life
1 in 3
What are the common causes and dizziness and balance dysfunctions?
Peripheral and central
What 4 systems does balance depend on?
Vestibular, visual, proprioceptive, diffuse CNS
Why are audiologists involved in balance dysfunctions?
Vestibular system is in close proximity to the ear, sensory receptors and fluid are shared, 8th cranial nerve is shared
The vestibular and hearing system share the same liquid called ______
Perilymph
How is the vestibulo-ocular reflex (VOR) stimulated?
As you move your head, perilymph moves in the semicircular canal
What is the response to the VOR?
Eyes will move in response to the reflex
Caused by VOR; eyes move in response to fluid movement in semicircular canal
Nystagmus
Objective measure of subjective complaint (dizziness)
VNG and ENG
VNG
Videonystagmography
ENG
Electronystagmography
Measured with infrared goggles; infrared light reflected off the retina
VNG
Measure with electrodes on the surface of the skin near the eyes
ENG
Electrical difference between the back and front of the eye
Corneoretinal potential
Test to see if a person can focus on one point
Gaze test
Test where a dot is moving and the person has to follow it
Smooth pursuit test
Test where the stripes on the picture are moving; shows if nystagmus is working
Optokinetic nystagmus test
Test where we place patient in different positions and find nystagmus
Positional nystagmus test
Test where we lie the person with head hanging off of table and turn their head
Paroxysmal positional vertigo test (Dix-Hallpike maneuver)
Test where we change temperature in ear canal using water or air; independent evaluation of each ear
Caloric test
What does COWS stand for?
Cold opposite warm same
If cold water is placed in the right ear, where would we get the nystagmus?
Left ear
Gets rid of visual cues, only shows vestibular system using a rotary chair
Rotary chair
What type of testing can we do on a rotary chair?
VNG
Used to test how strong your 3 systems in balance work
Computerized dynamic posturography
What types of vestibular rehabilitation do we use?
Wiifit, Epliomniacs, medication, antivert
