NEUROLOGY 5 Flashcards
what is the main function of the vestibular system?
miantaining balance
what are some components of the peripheral vestibular system?
-vestibular receptors in ear
-vestibular nerve (CN VIII)
what are some componenets of the centeral vestibular system?
-vestibular nucleii in brainstem
-cerebellum
what is the most common sign of vestibular system disease
head tilt
what is nystagmus?
-involuntary jerking of the eye
-slow and fast phase
nystagmus has a fast and slow phase. which is CONTRALATERAL to the lesion?
fast phase [toward lesion]
WATCH VID AGAIN I WANT TO ACTUALLY SEE SLOW N FAST PHASE
describe vestibular ataxia
-what is another clinical sign of vestibular disease?
falling, rolling, drifting
-another is vomiting/nausea
how can you differentiate central and peripheral vestibular disease?
IDK IF THIS IS RIGHT
WHATDID HE SAY HERE ABT THE PICTURES
what is horner syndrome?
what is paradoxical vestibular syndrome?
-how can this be diagnosed?
-contradictory vestibular signs caused by lesion of cerebellum
-postural rxn deficits on the ipsilateral side, however head tilt towards contralateral side[head tilt is usually ipsilateral]
describe bilateral vestibular disease
-absent nystagmus
-absent head tilt
-side to side swaying of head
-broad base stand
-falling to either side
[anomalaous diseases of the vestibular system…]
-what are two types of peripheral vestibular disease?
[metabolic diseases of the vestibular system…] most common one?
hypothyroidism
[neoplastic diseases of the vestibular system…]
[iatrogenic diseases of the vestibular system…]
what ist he most common cuzse of peripheral vestibular disease?
infectious
ON OTITIS MEDIA INTERNA
idiopathic vestibular disease
-describe the onset and progression
-tx
ON CENTRAL VESTIBULAR DIESAE
what is the most common central vestibular inflammatory disease?
GME: Granulomatous
Meningoencephalomyelitis
central vestibular disease with toxic causess can be die to intoxicatio of which med?
metronidazole
describe symptoms of CNI disease
nasal discharge
nasal obstruction
loss of apetiti?
-challenging to diagnose
describe symtpoms of CNII disease
??POOR RESPONSE TO REFLEXES/RESPONSES???’IDK
how do differentiate if blindness is due to a lesion of the brain or nerve tracT?
blindness without PLR: lesion on brain
blindness with PLR: lesion on nerve tract
anosocoria follows a parasympathetic and sympathetic pathway. how to differentiate which one the lesion is on in a cas eof anosocoria?
MISSED SOME STUFF
what are the 3 branches of the trigeminal nerve?
mandibular
opthalmic
maxillary
-describe symtpom of a bilateral lesion of the mandibular branch of trigeminal nerve
-what about unilateral lesion?
MORE ON BILATERLA LESION OF MANDIBULAR BRANCH LYMPHOME AND IDIATHIC TRIG NEURITID
MORE ON TRIGEM NERVE SHEATH TUMOUR
signs of facial nerve CN VII lesion?
ADD ALL 3 PICS?
[CNVII lesion] breed predisposition to idiopathic facial nerve paralysis?
-tx?
cocker spaniels
WHAT DID HE SAY ABT THE QHITE COAT LOL…PREDISPOSED????
ON CNVIII
what are signs of CN IX lesion?
-gag/swallowing reflex issues
-dysphagia
ON CN X
ON LARYNGELA PARALYSIS
ON CN XI
describe signs of CN XII lesion
deficits in tongue movement
