Please enable JavaScript.

Coggle requires JavaScript to display documents.

Jean (Pathophysiology of BPPV (canalithiasis (crystals (otoconia) flowing…

- - - - when there are enough crystals you get symptoms
      - triggers VOR & slow phase of nystagmus
        
        then fast phase nystagmus
      - vestibular system itself does not cause vertigo
        
        message from affected side is different from other balance system inputs = spinning sensation perceived by brain
- - - - tilt forward
      - roll to right
- - - - BPPV
        
        Benign!
        
        Solid fragments flowing in fluid
        
        overstimulated hair cells = mixed signals = dizzy
        
        common - posterior canal - nodding movements
        
        recurrent after 5 years
        
        dizzy < 60 sec
        
        eases
        
        rest & no movement
        
        unilateral upbeating torsional nystagmus
        
        may have latency period
        
        Test with hallpike
        
        treat with epleys
      - Meniere's
        
        ?autoimmune
        
        chronic - hearing loss
        
        approx 60 y.o.
        
        random episodes
        
        2-4 hours of vertigo
        
        inner ear pressure 'full'
        
        drop attacks sometimes
        
        tinnitus
        
        can stop after 7-10 years
        
        may feel sleepy/unsteady the next day
        
        medications to treat for nausea
        
        treat with balance and habituation potentially
      - Vestibular neuritis
        
        just affecting vestibular nerve
        
        movement is an agg not trigger
        
        nausea + vomiting
        
        horizontal nystagmus
        
        test - hearing & balance
        
        treat with meds & habituation + gaze stability
      - vestibular labyrinthitis
        
        affects labyrinth + nerve
        
        hearing loss as well
        
        otherwise similar symptoms to vestibular neuritis
      - Acoustic neuroma
        
        benign tumour in vestibulocohclear nerve for schwann cels
        
        peripheral & central symptoms
        
        depends on swelling and size of tumour
        
        unilateral hearing loos/tinnitus
        
        MRI & surgery
      - migraines
      - Hypo function
        
        age related degeneration
        
        vertigo & balance dysfunction
      - Central pathology
        
        Empleys ineffective
        
        MRI
        
        do VOR cancelation & gaze stability