Carotid artery stenting for stroke prevention

Area of Science:

• Neurology
• Vascular Surgery
• Interventional Cardiology

Background:

• Stroke represents a significant global health burden, with extracranial carotid artery stenosis being a major contributor to ischemic strokes.
• Carotid endarterectomy (CEA) is the established treatment, but carotid artery stenting (CAS) has emerged as a key alternative, particularly for high-risk individuals.

Purpose of the Study:

• To review the current applications of CAS for extracranial carotid artery stenosis.
• To analyze technical considerations, clinical trial data, and success factors for CAS.
• To discuss contemporary guidelines regarding CAS versus CEA.

Main Methods:

• Review of existing literature, including high-surgical-risk CAS registries and the Carotid Revascularization Endarterectomy vs Stent Trial (CREST).
• Analysis of procedural outcomes, complications, and learning curve associated with CAS.
• Evaluation of patient selection criteria and anatomical considerations for CAS.

Main Results:

• CAS is an accepted alternative to CEA for high-risk patients, with registries supporting its efficacy.
• The CREST trial indicated similar outcomes for CAS and CEA in standard-risk patients, though with differing complication profiles (minor stroke for CAS, myocardial infarction for CEA).
• CAS demands significant technical skill and a substantial case experience (>70 cases) for optimal results, with careful patient selection being paramount.

Conclusions:

• CAS is a valuable revascularization option for extracranial carotid artery stenosis, especially when CEA poses higher risks.
• Successful CAS hinges on meticulous technique, appropriate patient selection, and experienced operators.
• Ongoing evaluation of CAS and CEA continues to refine treatment strategies for stroke prevention.