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Vascular Risks of Asymptomatic Carotid Stenosis
Stroke 22:1485-1490, Norris,J.W.,et al, 1991
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Article Abstract
Transient ischemic attacks occurred in 75 patients and stroke in 29,while 132 had ischemic cardiac events.Five patients died from stroke and 59 from cardiac causes.Annual stroke rate was 1.3%in patients with carotid stenosis=75%and 3.3%in those with stenosis>75%.Ipsilateral stroke rate was 2.5%in patients with>75%carotid stenosis.Annual cardiac event rate was 8.3%and death rate 6.5%in patients with severe carotid stenosis. Conclusions:With carotid stenosis=75%,the stroke rate is negligible(1.3% annually)whereas the combined risk of cardiac ischemia and vascular death is as high as 9.9%.With stenosis>75%,combined transient ischemic attack and stroke rate is 10.5%per year,with 75%of events ipsilateral to the stenosed artery.
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asymptomatic
bruit
bruit,asymptomatic
carotid artery disease
carotid artery disease,asymptomatic
carotid artery disease,natural history of
carotid artery stenosis
cerebrovascular accident
cerebrovascular disease,risk factors in
transient ischemic attack
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