vertigo/tinnitus

Question 1

causes of deafness and tinnitus

Answer 1

outer ear - wax, foreign body

middle ear - trauma ie, fracture of temporal bone, suppurative otits media, otosclerosis

cochlea- age, infection - purulent meningitis, aminoglycosides, meniers

8th nerve
lesions of the cerebeloopontin ie acoustic

brainstem - MS, neoplasia, infarction

Question 2

compoments to mainatin balance

Answer 2

vestibular, visual, proprioceptive

Question 3

what anatomical locations are damged to result in vertigo

Answer 3

labyrint
vestibualr nerve
cerebellopontine angle
brainstem
cerebellum
supranuclear connections

Question 4

clinical features of labyrinthine failure

Answer 4

vertigo
nystagmus - horizontal/rotary and suppressed with visual fixatoin

veers towards lesion

postive hallpike test

menies
BPPV

Question 5

features of vestibualr nerve lesion

Answer 5

vertigo - short or prolonged

nystagmus - horizontal/rotary and suppressed with visual fixation

veers towards lesion

sensorineural loss

ipsilateral cerenellar signs
contralateral pyramidal signs

Question 6

features of cerebellopontine lesion

Answer 6

horzizontal nystagmus

ataxia towards lesion, hemiparetic

sensorineural
high frequency loss early

loss of corneal reflex
5th, 7, 9, 10th nerve lesions
contralateral pyramida weakness
ipsilateral ataxia