‘It works in practice, but does it work in theory?’ An important addition to the body of real-world evidence supporting carotid endarterectomy - Report - MDSpire

‘It works in practice, but does it work in theory?’ An important addition to the body of real-world evidence supporting carotid endarterectomy

  • By

  • Kirthi S Bellamkonda

  • David H Stone

  • Jesse A Columbo

  • July 6, 2026

  • 0 min

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Clinical Report: Evaluating Practical Effectiveness Versus Theoretical Outcomes

Background

Carotid artery stenosis is a major contributor to stroke. The choice between CEA, CAS, and other revascularization techniques is critical for reducing long-term stroke risk.

Data Highlights

ProcedureAsymptomatic Patients 30-Day RiskSymptomatic Patients 30-Day Risk
CEA1.5%11.4%
CAS3.0%14.2%

Key Findings

  • 85% of patients in the study had asymptomatic carotid stenosis.
  • CEA had a 1.5% 30-day stroke or death risk in asymptomatic patients.
  • CAS had a 3.0% 30-day stroke or death risk in asymptomatic patients.
  • In symptomatic patients, CEA exhibited an 11.4% risk compared to 14.2% for CAS.
  • At 5 years, CAS showed higher cumulative stroke and mortality risks than CEA in both groups.
  • 98% of patients achieved excellent postoperative medical therapy compliance.

Clinical Implications

The findings suggest that CEA may provide better short-term outcomes compared to CAS, particularly in asymptomatic patients. High compliance rates with postoperative medical therapy indicate that real-world practices can achieve effective management of carotid artery stenosis.

Conclusion

The study highlights the importance of real-world evidence in evaluating the effectiveness of carotid revascularization procedures, suggesting that CEA may offer superior outcomes compared to CAS in clinical practice.

Related Resources & Content

  1. Willot et al., Vascular Medicine, 2023 -- Evaluating Practical Effectiveness Versus Theoretical Outcomes
  2. Economic Evaluation of Two Approaches for Shunt Implementation in Carotid Endarterectomy Procedures
  3. BJS (British Journal of Surgery) — Emulating Target Trials: Utilizing Real-World Data to Assess Surgical and Perioperative Care Interventions
  4. Frontiers in Cardiovascular Medicine — Transcervical carotid artery stenting compared to transfemoral carotid artery stenting and carotid endarterectomy: perioperative and short-term results from a single center
  5. American Journal of Epidemiology — Encouraging Broader Implementation of Target Trial Emulation in Causal Inference Research
  6. 2024 Guideline for the Primary Prevention of Stroke
  7. Why CREST-2 Trial Results Should Inform, Not Replace, Clinical Judgment
  8. Medical Management and Revascularization for Asymptomatic Carotid Stenosis | New England Journal of Medicine
  9. New Data Presented at VAM26 Explores How Carotid Endarterectomy and Carotid Artery Stenting Compare in Real-World Patient Populations | Society for Vascular Surgery

Original Source(s)

‘It works in practice, but does it work in theory?’ An important addition to the body of real-world evidence supporting carotid endarterectomy

  • by Kirthi S Bellamkonda, David H Stone, Jesse A Columbo

  • July 6, 2026

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