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High stroke rate in patients with medically managed asymptomatic carotid stenosis at an academic center in the Southeastern United States
Since the publication of randomized clinical trials defining the benefit of carotid endarterectomy (CEA) for asymptomatic carotid stenosis, medical management of carotid stenosis has changed significantly. With antiplatelet agents and statins, some question whether these trials are still relevant, suggesting that asymptomatic patients with>70% internal carotid artery (ICA) stenosis may do better with medial management alone, lessening the need for CEA and carotid stenting. The Vascular Quality Initiative (VQI) registry has shown that there are wide practice variations regarding the degree of stenosis that prompts surgical ...
Source: Annals of Vascular Surgery - April 22, 2022 Category: Surgery Authors: Sarah Weiner, Mary Hunter Benton, Benjana Guraziu, Yue Yange, Jie He, Yi Tang Chen, William A. Marston, Katharine L. McGinigle Tags: General Review Source Type: research

Arterial Atherosclerosis: Vascular Surgery Interventions
Am Fam Physician. 2022 Jan 1;105(1):65-72.ABSTRACTAtherosclerotic vascular disease is a leading cause of death worldwide. Atherosclerotic stenosis of the internal carotid or intracranial arteries causes up to 15% of strokes. Peripheral artery disease affects up to one in five people in the United States who are 60 years and older and nearly one-half of those who are 85 years and older. Renal artery stenosis may affect up to 5% of people with isolated hypertension and up to 40% of people with other atherosclerotic diseases. All patients with atherosclerotic vascular disease should receive a comprehensive program of guidelin...
Source: Atherosclerosis - January 14, 2022 Category: Cardiology Authors: Jonathon M Firnhaber C S Powell Source Type: research

Asymptomatic Carotid Stenosis Is Associated With Circadian and Other Variability in Embolus Detection
Conclusions: Embolism associated with asymptomatic carotid stenosis shows circadian variation with highest rates 4–6 h before midday. This corresponds with peak circadian incidence of stroke and other vascular complications. These and ASED Study results show that monitoring frequency, duration, and time of day are important in ES detection. Introduction Transcranial Doppler (TCD) detected microembolism in the ipsilateral middle cerebral artery (MCA) may help stratify the risk of stroke and other arterial disease complications in persons with advanced (≥60%) asymptomatic carotid stenosis. If so, this t...
Source: Frontiers in Neurology - April 15, 2019 Category: Neurology Source Type: research

Stenosis Length and Degree Interact With the Risk of Cerebrovascular Events Related to Internal Carotid Artery Stenosis
Conclusion: We found a statistically insignificant tendency for the ultrasound-measured length of sICAS<70% to be longer than that of sICAS≥70%. Moreover, the ultrasound-measured length of sICAS<90% was significantly longer than that of sICAS 90%. Among patients with sICAS≥70%, the degree and length of stenosis were inversely correlated. Larger studies are needed before a clinical implication can be drawn from these results. Introduction Internal carotid artery stenosis (ICAS) causes around one-fifth of ischemic cerebrovascular stroke and has the highest risk of early stroke recurrence...
Source: Frontiers in Neurology - April 8, 2019 Category: Neurology Source Type: research

Invited commentary
Although carotid endarterectomy and stenting for symptomatic significant carotid artery stenosis are widely accepted for stroke prevention, their use for asymptomatic stenosis is more controversial. With the advances in medical therapy, particularly the use of statins, and with an annual stroke risk of 1% to 2% for asymptomatic disease, justifying these interventions in these patients is more difficult. What is more disturbing is that ∼90% of all carotid endarterectomy and stenting procedures in the United States are performed on asymptomatic patients and that many were felt to be unnecessary, resulting in a cost of>$2 billion annually.
Source: Journal of Vascular Surgery - April 26, 2018 Category: Surgery Authors: Ali F. AbuRahma Tags: From bench to bedside Source Type: research