BPPV Flashcards
What is the Dizziness Handicap Inventory (DHI) used for?
It is used to provide a clinical diagnostic hypothesis for examination
There are five items predictive of BPPV on it (items 1,5,11,13,25)
What are the five items of the DHI that are predictive of BPPV?
Items 1,5,11,13,25
What is the MDC of the DHI?
17.18
What are the causes of BPPV?
Trauma
Infection
Idiopathic
Advanced age
What is secondary BPPV?
BPPV that occurs from a weakened vestibular system like a unilateral vestibular neuritis
Pts with a hx of what conditions may be a risk for BPPV?
Osteoporosis, CABG, uncontrolled HTN, and vitamin D deficiency
What is the most common cause of vertigo?
BPPV
What is BPPV (Benign Paroxysmal Positional Vertigo)?
A mechanical disorder caused by the otoconia being displaced from the macula of the utricle
T/f: BPPV is the easiest disorder to successfully ID and treat
True
T/f: in BPPV, calcium particles can be displaced into one or more of the 3 SCC
True
Order the SCC from most to least likely to get BPPV?
Posterior, horizontal, anterior
T/f: BPPV is usually on one side except in cases of trauma and systemic infection
True
When do symptoms occur and dissipate in BPPV?
Symptoms occur with position changes while the crystals are still moving
Symptoms stop once the crystals settle into place (usually less than 1 min)
T/f: the symptoms of BPPV are very random and hard to distinguish
False, they are happen very regularly and predictably
T/f: BPPV is very mechanical and reproducible
True
What is cupulolithiasis?
When the otoliths are attached to the cupula, increasing the deflection of the cupula and creating a sense of dizziness
How long do symptoms last with cupulolithiasis? Why?
As long as they are in the provoking position bc the otoconia are persistently pulling in the cupola to create the illusion of spinning
What is canalolithiasis?
When the otoliths are free floating in the endolymph of the canal, increasing deflection of the cupula
How do symptoms occur in canalolithiasis?
When put into the provoking position, the symptoms will have a crescendo, peak, then decrescendo within a minute
Is cupulolithiasis or canalolithiasis more common?
Canalolithiasis
Does cupulolithiasis or canalolithiasis have more intense nystagmus?
Canalolithiasis
Does cupulolithiasis or canalolithiasis have longer lasting symptoms in the provoking position?
Cupulolithiasis
Is cupulolithiasis or canalolithiasis easier to treat?
Canalolithiasis
How does hyper deflection of the cupula cause sensation of spinning?
Bc the brain sees this an increased firing in that canal which is asymmetrical to the other ear causing a profound sense of dizziness