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What % of all strokes are ischemic? The rest are?
87% = ischemic. Rest = hemorragic
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What are risks for a thrombotic stroke?
older age, high cholesterol, HTN
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What are risks for a emboliic stroke?
often cardiogenic: Afib, mechanical valves, endocarditis, ASD
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What's the time frame to give tPA?
3 hours, 4.5 if not >80 y, taking oral anticoagulants, NIHSS score >25, hx of DM + CVA
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What's the biggest risk of IV rtPA, esp if given after 3 hours after onset of sxs?
intracerebral hemorrhage
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What's the advantage of intra-arterial rtPA?
directly to site of occlusion = smaller dose = samller systemic effect, also can give up to 6 hrs after sx onset
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a MERCI Retriever can be used up to ? hrs after sx onset?
8 (also benefit is less risk of causing hemorrage)
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