Reconsidering Carotid Artery Stenting for Asymptomatic Carotid Stenosis in the Era of Endovascular Evolution
Chloe DeYoung1, Brandon Lucke-Wold2
1College of Medicine, University of Florida, Gainesville, FL 32610, USA.
Insights
Intensive medical management is standard for asymptomatic carotid artery stenosis. However, recent CREST-2 trial data suggests carotid artery stenting may reduce stroke risk in select patients.
Area of Science:
- Vascular Surgery
- Neurology
- Interventional Cardiology
Background:
- Management of asymptomatic carotid artery stenosis (ACAS) typically involves intensive medical therapy.
- Carotid revascularization (endarterectomy or stenting) is reserved for specific patient groups based on stenosis severity, risk, and preference.
- Existing guidelines recommend shared decision-making for severe stenosis (>70%), but prior trials showed no revascularization superiority over medical therapy.
Purpose of the Study:
- To evaluate the role of carotid artery stenting (CAS) in ACAS in light of new trial evidence.
- To discuss the implications of the CREST-2 trial findings for current management strategies.
Main Methods:
- Review of existing guidelines and clinical trial data, focusing on the CREST-2 trial.
- Comparative analysis of medical management versus revascularization strategies for ACAS.
Main Results:
- The CREST-2 trial's CAS arm showed a significant long-term reduction in ipsilateral ischemic stroke compared to medical therapy alone.
- Previous studies recommending carotid endarterectomy over CAS for >60% stenosis had limited statistical power.
Conclusions:
- New evidence from CREST-2 supports a potential renewed role for CAS in carefully selected ACAS patients.
- Shared decision-making remains crucial, but CAS should be reconsidered as a primary option in specific cases.
- Further research may refine patient selection criteria for CAS in ACAS.
Abstract:
Management strategies in asymptomatic carotid artery stenosis are largely centered on intensive medical management, with carotid revascularization via endarterectomy or carotid artery stenting being reserved for select patients. This decision may be based on stenosis severity, perioperative risk, and patient preference. Current guidelines emphasize shared decision-making for patients with severe (>70%) stenosis, informed by prior trial data that does not demonstrate superiority of revascularization over independent medical therapy. Other studies more specifically recommend carotid endarterectomy over carotid artery stenting for asymptomatic patients with >60% stenosis. However, these studies are limited by poor statistical power. Recent findings in the CREST-2 trial have challenged this discussion of medical management as an independent primary course of action. The carotid artery stenting arm demonstrated significant long-term reduction in ipsilateral ischemic stroke compared to medical therapy alone. In this perspective, we argue that this new evidence supports a renewed role for carotid artery stenting in carefully selected patients with severe asymptomatic carotid artery stenting.
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