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