Stroke, Vol 20, 1133-1137, Copyright © 1989 by American Heart Association
JE Ryu, K Murros, MA Espeland, J Rubens, WM McKinney, JF Toole and JR Crouse
To evaluate the association between extracranial carotid atherosclerosis,
race, and transient ischemic attack, we carried out a retrospective
hospital chart review and quantified the extent of noninvasively determined
extracranial carotid atherosclerosis in 25 black patients greater than 45
years old with transient ischemic attacks. Two sex- and age-matched white
patients with transient ischemic attacks were similarly studied for each
black patient. Extent of extracranial carotid atherosclerosis (expressed as
B-mode score) was similar for blacks and whites. B-mode score was only
slightly less in patients with posterior- than in those with
anterior-circulation transient ischemic attacks. Fifty-six patients (35
white, 21 black) had unilateral anterior-circulation transient ischemic
attacks. Of the 32 patients with more extensive extracranial carotid
atherosclerosis ipsilateral to the affected hemisphere, 23 (66% of 35) were
white; only nine (43% of 21) were black. In the 35 white patients, the
extent of disease in the ipsilateral carotid artery was significantly
greater (p less than 0.03) than that in the contralateral carotid artery.
When B- mode scores in the left and right carotid arteries were combined
for the subgroup of patients with unilateral anterior-circulation transient
ischemic attacks, blacks had slightly more atherosclerosis in the
extracranial arteries than whites.
ARTICLES
Extracranial carotid atherosclerosis in black and white patients with transient ischemic attacks
Department of Medicine, Bowman Gray School of Medicine of Wake Forest University, Winston-Salem, North Carolina 27103.
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