Related Experiment Video
Updated: Jul 8, 2026

Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
Published on: January 18, 2018
Current management of symptomatic intracranial stenosis: medical versus endovascular therapy
John B Weigele1, Robert A Taylor, Scott E Kasner
1Interventional Neuroradiology Service, Department of Radiology, University of Pennsylvania Medical Center, 3400 Spruce Street, Philadelphia, PA 19104, USA. john.weigele@uphs.upenn.edu
Insights
Intracranial arterial stenosis (IAS) causes 8-10% of ischemic strokes, with a high annual risk of recurrence. Current treatments focus on antiplatelet agents, reserving endovascular therapy for high-risk patients.
Area of Science:
- Neurology
- Vascular Medicine
- Interventional Cardiology
Background:
- Intracranial arterial stenosis (IAS) accounts for 8-10% of ischemic strokes.
- Patients with IAS face a significant 12% annual risk of recurrent stroke, particularly within the first year.
- Warfarin offers no advantage over aspirin for stroke prevention in IAS and increases bleeding risks.
Purpose of the Study:
- To review the current understanding of intracranial arterial stenosis (IAS).
- To discuss the risks associated with IAS and current treatment strategies.
- To highlight the evolving role of endovascular treatment for IAS.
Main Methods:
- Literature review of studies on intracranial arterial stenosis.
- Analysis of stroke recurrence rates and treatment outcomes.
- Evaluation of antiplatelet therapy and endovascular interventions.
Main Results:
- High-grade IAS (> or = 70%), recent symptom onset, and female sex are associated with the highest risk of recurrent stroke.
- Antiplatelet agents are the recommended primary treatment for symptomatic IAS.
- Endovascular therapy is considered for high-risk patients unresponsive to medical management.
Conclusions:
- Symptomatic IAS presents a substantial risk of recurrent stroke.
- Antiplatelet therapy is the cornerstone of medical management for IAS.
- Endovascular treatment is an important therapeutic option for select high-risk IAS patients.
Abstract:
Approximately 8% to 10% of all ischemic strokes are caused by intracranial arterial stenosis (IAS). After a stroke or transient ischemic attack due to IAS, patients face a 12% annual risk of recurrent stroke on medical therapy, with most strokes occurring in the first year. Warfarin has been shown to be no better than aspirin in preventing recurrent strokes but poses a higher risk of serious bleeding and death. Groups with the highest risk of recurrent stroke are those with high-grade (> or = 70%) stenosis, those with recent symptom onset, and women. Endovascular treatment of IAS is a rapidly evolving therapeutic option. Antiplatelet agents are currently recommended as the primary treatment for symptomatic IAS, with endovascular therapy reserved for appropriate high-risk cases refractory to medical therapy.
Related Concept Videos
Aneurysm III: Interprofessional Care
Mitral Stenosis III: Medical Management
Aneurysm IV: Nursing Management
Venous Thrombosis III: Interprofessional Care
Aortic Regurgitation III: Medical Management
Mitral Regurgitation III: Medical Management
