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Carotid artery stenting.

Christopher J White1

  • 1Department of Medicine, Ochsner Clinical School, John Ochsner Heart & Vascular Institute, New Orleans, Louisiana.

Journal of the American College of Cardiology
|August 16, 2014
PubMed
Summary
This summary is machine-generated.

Carotid artery stenting (CAS) and carotid endarterectomy (CEA) show similar outcomes for stroke prevention. While both are effective, further research is needed to confirm benefits over modern medical therapy alone.

Keywords:
angioplastycerebral angiographyembolic protectionneurovascularstroke prevention

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Area of Science:

  • Vascular Surgery
  • Interventional Cardiology
  • Neurology

Background:

  • Carotid artery stenting (CAS) and carotid endarterectomy (CEA) are established procedures for stroke prevention.
  • Clinical equipoise between CAS and CEA is supported by major trials and professional society guidelines.
  • Modern medical therapy has significantly improved outcomes, necessitating re-evaluation of revascularization benefits.

Purpose of the Study:

  • To compare the efficacy and safety of CAS versus CEA in preventing stroke and related outcomes.
  • To evaluate the incremental benefit of revascularization procedures over medical therapy in asymptomatic patients.

Main Methods:

  • Analysis of data from large U.S. randomized clinical trials (e.g., CREST, SAPPHIRE).
  • Comparison of combined endpoints including stroke, death, and myocardial infarction (MI) at various follow-up periods.
  • Stratification of patient risk (average vs. high surgical risk) and symptom status (symptomatic vs. asymptomatic).

Main Results:

  • The CREST trial found no significant difference between CAS and CEA in average-risk patients for the combined endpoint.
  • The SAPPHIRE trial showed no difference in symptomatic high-risk patients but a significantly better outcome for CAS in asymptomatic high-risk patients (9.9% vs. 21.5%; p=0.02).
  • Over 70% of procedures are performed in asymptomatic patients, highlighting the importance of primary stroke prevention.

Conclusions:

  • CAS and CEA demonstrate clinical equipoise, offering comparable outcomes for stroke prevention in most patient groups.
  • CAS may offer a significant benefit over CEA in asymptomatic patients at high surgical risk.
  • Demonstrating the incremental benefit of revascularization over optimal medical therapy remains crucial, especially for asymptomatic individuals.