Stroke, Vol 19, 1229-1233, Copyright © 1988 by American Heart Association
HH Hu, KK Liao, WJ Wong, MM Teng, YK Lo, FL Chu and T Chang
A total of 72 ocular bruits in 50 patients with symptoms of
atherothrombotic ischemic cerebrovascular disease were studied with
continuous-wave Doppler ultrasonography with spectrum analysis (Dopscan).
Fourteen patients also had conventional angiography, and 14 had digital
subtraction angiography. Ocular bruits by augmentation flow due to
occlusion (seven bruits, 9.7%) or tight stenosis (17 bruits, 23.6%) of the
contralateral internal carotid artery accounted for only 24 ocular bruits
(33.3%). In contrast, siphon stenosis ipsilateral to the ocular bruit was a
very common finding. All 14 patients studied with conventional angiography
had variable degrees of siphon stenosis ipsilateral to the ocular bruits;
there was one angiography failure. We conclude that siphon stenosis can
cause ocular bruit alone or can act in combination with augmentation flow
by contralateral carotid occlusion or tight stenosis. The difference in
their relative occurrence in our patients compared with previous reports
probably reflects racial differences in the distribution of stenotic or
occluded lesions of the carotid artery between our patients and Caucasian
patients. The ocular bruit was the only auscultatory finding in more than a
quarter of our patients (14 of 50, 28%).
ARTICLES
Ocular bruits in ischemic cerebrovascular disease
Department of Neurology, Veterans General Hospital, Taipei, Taiwan, Republic of China.
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