Vestib Rehab 1 Flashcards
what happens when stereocilia are deflected towards the Kinocilia?
excitiation/depolarization!!! of firing rate
this is known as the push-pull mechanism
What happens when stereocilia are deflected away from the Kinocilia?
inhibition of firing rate.
this is known as the push-pull mechanism
what is a healthy vestibular system firing rate?
70-100 spikes/sec
T or F?
The firing rate of each vestib system should be equal and opposite when the head turns?
YES, otherwise is pathological
what does the utricle detect..
horizontal or vertical acceleration or head tilt?
horizontal acceleration and head tilt
what does the saccule detect..
horizontal or vertical acceleration or head tilt?
vertical acceleration…
think of it ya sacc goes up n down type shit
These structures are filled with endolymph fluid..
1. Semicircular Canals
2. Cupula
3. Maculae
- Semicircular Canals
These structures contains hair cells that deflect with head movement (Select all that apply)…
- Semicircular Canals
- Cupula
- Maculae
- Cupula
- Maculae
These structures contain otoconia….
a) Semicirular canals
b) Utricle
c) Saccule
b) Utricle
c) Saccule
These sense rotational head movement.
a) Semicirular canals
b) Saccule
c) Utricle
a) Semicirular canals
When you turn your head to the left, which of the following is accurate in an intact vestibular system?
a) Left Vestibular Apparatus is Excited and Right Inhibited; Eyes Go Right
b) Left Vestibular apparatus is Inhibited and RightExcited; Eyes go Left
c) Left Vestibular Apparatus is Excited and Right Inhibited; Eyes Go Left
d) Left Vestibular apparatus is Inhibited and RightExcited; Eyes go Right
a) Left Vestibular Apparatus is Excited and Right Inhibited; Eyes Go Right
what vestib pathology is more common, peripheral or central?
peripheral,
which includes UVH, BVH, BPPV
Someone comes into the ER complaining of sudden onset dizziness with nausea and vomiting. What other questions will you ask to rule in or out serious pathology?
Did you hit your head?
describe the dizziness for me please?
Is the dizzziness any better or worse when you change your position?
Did you recently have any illnesss?
Do you see double at all?
A patient comes into an outpt PT clinic describing their symptoms as everything is bouncing when they’re walking. What are they describing?
a) Vertigo
b) Nystagmus
c) Tinnitus
d) Oscillopsia
d) Oscillopsia
this is when the room appears to be moving around you when it really isnt… ya trippin
T or F?
BPPV room spinning dizziness sx last for <15 secs
TRUE!
short duration but very debilitating
What are common movements that can exacerbate BPPV sx?
looking up
sit to supine/supine to sit/rolling
bending down w/ head up
what canal is most commonly affected with bppv?
post (85-90%)
horiz (5-15%)
ant (RARE)
Explain the difference b/w canalathiasis and cupulothiasis!
Canalathiasis is when the otoconia are displaced and free-floating in the SCC, sx last <15 secs
cupulothiasis is when the otoconia are displaced and stuck in the cupula (in the cup of jello yano) sx last 60-90 secs