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15 Cards in this Set

  • Front
  • Back
What are causes of dizziness?
• disequilibrium
• hyperventilation
• instability
• presyncope
• vertigo
What are causes of presyncope?
• cardiac arrhythmia
• outflow obstruction
• orthostatic hypotension
What are symptoms of presyncope?
• dimming of vision
• disequilibrium w/out true vertigo
• global weakness
• wooziness, giddiness
What is the definition of vertigo?
illusory sense of unidirectional rotational movement
What are characteristics of vertigo due to peripheral disorders?
• may be disabling (ex. vomiting)
• nystagmus always present
• rarely life-threatening
• sudden onset
What are characteristics of vertigo due to CNS disorder?
• non-paroxysmal onset
• symptoms may be mild
• nystagmus may be present or absent
• symptoms may progress to CNS dysfunction or death
True/False: Nystagmus that is purely vertical or shows dissociation between the two eyes indicates central cause
The correct answer is: True
How can you tell which ear is affected by looking at nystagmus?
the fast phase of the nystagmus usually beats away from the affected side
Severe acute onset vertigo in the context of a previous URI indicates what peripheral etiology?
What are characteristics of positional vertigo?
• provoked by changes in head position
• theoretical cause is freely moving debris within semicircular canal
• can be treated by repositioning maneuvers
What is the triad of symptoms for Meniere's disease?
• vertigo
• hearing loss
• tinnitus
What is the MCC of tinnitus?
What are causes of central vertigo?
• cerebellar hemorrhage or infarction
• cerebellar swelling
• vertebral vascular ischemia
• demyelinating disease
• mass lesions
• basilar migraines
• epilepsy
What is the treatment for Meniere's disease?
• diuretics
• surgical ablation (in severe persistent cases)
What is the treatment for vertebrobasilar insufficiency?
• aspirin
• ticlopidine