Which of the following characteristics differentiates peripheral vertigo from central vertigo?
a) The duration of central vertigo is shorter than that of peripheral vertigo.
b) There is an auditory-associated symptom with peripheral vertigo and a visual-associated symptom with central vertigo.
c) Central vertigo is positional, and peripheral vertigo is not.
d) The onset of central vertigo is more sudden than that of peripheral vertigo.
Carotid endarterectomy should be considered only for symptomatic patients with greater than what percentage of stenosis?
a) Greater than 25%
b) Greater than 50%
c) Greater than 75%
d) Only for 100% occlusion
What antiplatelet agent is most widely used for secondary prevention of stroke?
d) Aspirin and clopidogrel
Which adjunctive diagnostic test should be used in the work-up of a patient with suspected Creutzfeldt-Jakob disease or transient epileptic amnesia?
c) Cerebrospinal fluid analysis
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