The role of carotid stenosis on cognition remains to be determined. To study whether people with stenosis of the carotid artery have increased cognitive impairments, we studied 53 patients with moderate or severe carotid stenosis (with no symptoms of stroke or dementia) and 53 controls. We describe which cognitive functions were impaired in the patients and whether there were differences based ...

BACKGROUND/PURPOSE Identification of carotid near-occlusion is essential before calculation of percent stenosis because stroke risk is lower than other severe stenosis and the treatment benefit is less. Calculations with reduced distal diameters are fallacious. CT angiography (CTA) is convenient and accurately quantifies internal carotid artery (ICA) stenosis. METHODS In a blinded protocol, 2...

References 1. Moore WS, Boren C, Malone JM, Roon AJ, Eisenberg R, Goldstone J, Mani R: Natural history of nonstenotic, asymptomatic ulcerative lesions of the carotid artery. Arch Surg 113:1352-1359, 1978 2. Podore PC, DeWeese JA, May AG, Rob CG: Asymptomatic contralateral carotid artery stenosis: a five-year follow-up study following carotid endarterectomy. Surgery 88: 748-752, 1980 3. Levin SM...

Carotid intervention in severe carotid stenosis after an anterior circulation ischemic event reduces the risk of further infarcts if the surgery is performed soon after the incident event. At present, there is no recommendation to differentiate among subtypes of anterior circulation infarcts or transient ischemic events. However, evidence is mounting that demonstrates a difference in pathophysi...

OBJECTIVE To critically examine the role of significant carotid stenosis in the pathogenesis of postoperative stroke following cardiac operations. DESIGN Retrospective cohort study. SETTING Single tertiary care hospital. PARTICIPANTS A total of 4335 patients undergoing coronary artery bypass grafting, aortic valve replacement, or both. MAIN OUTCOME MEASURES Incidence, subtype, and arter...

Carotid artery stenting （CAS） is a procedure used in the treatment of internal carotid stenosis, condition that can lead to cerebral infarction. Cerebral hyperperfusion syndrome among post-CAS complications. Thus, ensure postoperative control, understanding blood flow warranted. Nuclear medicine scan for quantitative assessment flow; however, since magnetic resonance imaging allows artery, it o...

BACKGROUND AND PURPOSE Three different methods for estimating the percentage of reduction in the diameter of the internal carotid artery (ie, stenosis) have been proposed in the literature. Further comparisons of the methods were carried out with the intent of recommending a current standard for determining the percentage of stenosis from angiograms. METHODS Angiograms from 112 patients were ...

BACKGROUND Generalized screening for carotid artery stenosis with carotid duplex ultrasonography in patients with peripheral arterial disease is controversial. OBJECTIVES The aim of the present study was to determine the prevalence of significant internal carotid artery (ICA) stenosis in a group of Iranian patients with peripheral arterial disease. METHODS We prospectively screened 120 pati...

BACKGROUND AND PURPOSE Dual-source CTA and black-blood MRA are recently developed techniques for evaluating carotid stenosis. The purpose of this study was to compare dual-source CTA with black-blood MRA and conventional TOF MRA in both detecting carotid stenosis by using DSA as a reference standard and demonstrating plaque morphology. MATERIALS AND METHODS Thirty patients with suspected caro...

BACKGROUND AND PURPOSE The hemodynamic effects of extracranial carotid stenosis on intracranial blood flow are not well characterized. We sought to determine the impact of degree of stenosis, stenosis length, and residual lumen on intracranial blood flow in patients with extracranial carotid stenosis. METHODS Carotid stenosis patients who had undergone both vessel flow rate measurements using...