Dizziness Flashcards
vertigo definition
type of dizziness where it feels like the room is spinning/you are spinning
need to clarify bc not al dizziness is vertigo!
pathophysiology of motion sickness
when your eyes say you aren’t moving but your ears (semicircular canals, otolith organs) say you are
treatment of motion sickness
close eyes
focus on horizon
what can gentamicin injection (eg for bacterial otitis externa) cause that presents with vertigo, nausea and loss of balance
oscillopsia
most common cause of vertigo
benign positional paroxysmal vertigo (BPPV)
pathophysiology of benign positional paroxysmal vertigo (BPPV)
calcium carbonate crystals are displaced from otolith organs (saccule and utricle) to semicircular canals
what is the trigger of benign paroxysmal positional vertigo (BPPV)
position change eg gardening, reaching up, rolling over in bed
how long does benign paroxysmal positional vertigo (BPPV) last
30-60 seconds
is there any hearing loss or tinnitus in benign paroxysmal positional vertigo (BPPV)
neither
which semicircular canal is most common for benign positional paroxysmal vertigo (BPPV) to occur in
posterior
investigation for benign paroxysmal positional vertigo (BPPV)
brief explanation
dix-hallpike test
turn head to 45 degrees, lie patient back with head over couch, dont close eyes (looking for a nystagmus), look for 30 secs, ask if dizzy
treatment in GP practice for benign positional paroxysmal vertigo (BPPV)
epley manoeuvre
treatment at home for benign paroxysmal positional vertigo (BPPV) if recurrent
brandt daroff exercises
what is vestibular neuronitis
where does it come from
infection of vestibular nerve (part of vestibulocochlear nerve CN VIII)
probs has a cold before
how long does the vertigo last in vestibular neuronitis
when is it worst
<3 weeks
day 1
