Stroke Caused by Extracranial Disease
Kevin M Barrett1, Thomas G Brott2
1From the Department of Neurology, Mayo Clinic Florida, Jacksonville. barrett.kevin@mayo.edu.
Insights
Intensive medical therapy is key for preventing stroke from carotid artery disease. Revascularization is standard for symptomatic stenosis, but its role in asymptomatic cases needs reassessment due to medical therapy advances.
Area of Science:
- Neurology
- Vascular Surgery
- Cardiology
Background:
- Extracranial internal carotid artery atherosclerotic occlusive disease is a significant cause of ischemic stroke.
- Vascular risk factor control is crucial for stroke prevention in patients with carotid occlusive disease.
Purpose of the Study:
- To review contemporary management strategies for extracranial carotid atherosclerotic occlusive disease.
- To highlight recent clinical trial results and address knowledge gaps in stroke prevention.
Main Methods:
- Review of current medical and surgical treatment guidelines.
- Analysis of recent clinical trial data on carotid artery disease management.
- Discussion of advances in antiplatelet therapy, blood pressure, and lipid management.
Main Results:
- Intensive medical therapy (antiplatelets, BP control, LDL reduction, lifestyle changes) is the cornerstone of stroke risk reduction.
- Carotid revascularization (endarterectomy or stenting) is established for symptomatic stenosis ≥70%.
- The benefit of revascularization for asymptomatic carotid stenosis requires reassessment in light of improved medical therapies.
Conclusions:
- Contemporary management emphasizes intensive medical therapy for all patients with carotid occlusive disease.
- Treatment decisions for carotid stenosis, particularly asymptomatic cases, should integrate the latest evidence on medical and interventional therapies.
Abstract:
Extracranial internal carotid artery atherosclerotic occlusive disease is a common ischemic stroke mechanism. Vascular risk factor control remains the cornerstone of stroke prevention in patients with both asymptomatic and symptomatic carotid occlusive diseases. Intensive medical therapy refers to the contemporary approach of antiplatelet therapy, blood pressure control, low-density lipoprotein reduction, and lifestyle modification to reduce stroke risk. Carotid revascularization with endarterectomy or angioplasty and stenting are established treatments for patients with symptomatic carotid stenosis ≥70%. Previously accepted ischemic stroke preventative strategies, such as carotid revascularization for asymptomatic carotid stenosis, require reassessment given advances in both medical therapy and surgical techniques. The purpose of this review is to describe contemporary approaches to the management of extracranial carotid atherosclerotic occlusive disease and the basis of these recommendations. Results from recently published clinical trials will be highlighted in addition to updated information from clinical trials addressing knowledge gaps in prevention of stroke caused by extracranial disease.
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