Abstract:
:The extracranial carotid systems of 105 patients with retinal ischemia were examined using B-mode ultrasonography with integrated pulsed Doppler. Sixty-four patients had amaurosis fugax (AF), 17 central retinal artery occlusions (CRAO), and 21 branch retinal artery occlusions (BRAO). The prevalence of carotid stenosis (greater than or equal to 60%) ipsilateral to the symptomatic eye was low (16%). Eighty-six percent of AF patients had either no plaque causing less than a 60% stenosis. A significant proportion of subjects with normal duplex scans had alternative explanations for their retinal ischemia (eg, migraine, cardiac embolus). Patients with Hollenhorst plaques were more likely to have stenotic or ulcerated plaque (p = 0.04). The degree of carotid stenosis correlated significantly with the number of vascular risk factors identified in individual patients (p = 0.02). The presence of risk factors was more common in CRAO and BRAO patients compared with the AF group. Combined ultrasound-Doppler investigations of the carotid bifurcation are valuable noninvasive tools for the screening of patients with retinal ischemia.
journal_name
Neurologyjournal_title
Neurologyauthors
Chawluk JB,Kushner MJ,Bank WJ,Silver FL,Jamieson DG,Bosley TM,Conway DJ,Cohen D,Savino PJdoi
10.1212/wnl.38.6.858subject
Has Abstractpub_date
1988-06-01 00:00:00pages
858-63issue
6eissn
0028-3878issn
1526-632Xjournal_volume
38pub_type
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