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The Participant-Reported Implementation Update and Score PRIUS: A Novel Method for Capturing Implementation-Related Data Over Time
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CREST-2: Early reflections on the primary results.

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Summary

The CREST-2 trial found that carotid revascularization, including stenting or endarterectomy, offers effective stroke prevention in select patients with asymptomatic carotid stenosis when performed by experienced specialists. Intensive medical management is foundational, but procedures remain crucial for high-risk individuals.

Keywords:
Carotid atherosclerosisCarotid stentingClinical trialsEndarterectomy

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Area of Science:

  • Cardiovascular Medicine
  • Neurology
  • Interventional Cardiology

Background:

  • High-grade asymptomatic carotid stenosis poses a stroke risk, complicated by evolving medical therapies and device advancements.
  • The CREST-2 trial addresses the contemporary role of carotid revascularization amidst improved risk-factor management and procedural techniques.

Purpose of the Study:

  • To clarify the role of carotid revascularization versus intensive medical management for high-grade asymptomatic carotid stenosis.
  • To evaluate stroke prevention strategies in the context of modern medical therapy and interventional procedures.

Main Methods:

  • CREST-2 enrolled patients with asymptomatic carotid stenosis receiving protocol-driven intensive medical management (blood pressure, LDL control).
  • Participants were randomized to carotid stenting or carotid endarterectomy, with rigorous operator credentialing and selective patient enrollment based on anatomy.
  • Medical management evolved with guideline updates during the trial.

Main Results:

  • Carotid stenting showed improved periprocedural safety and effective stroke prevention in selected patients with expert operators.
  • Carotid endarterectomy demonstrated numerically favorable stroke prevention outcomes compared to medical management alone, though not statistically significant at 4 years.
  • Intensive medical management is the cornerstone of treatment, but revascularization is vital for appropriately selected patients.

Conclusions:

  • Carotid revascularization, particularly stenting by credentialed operators in suitable patients, is safe and effective for stroke prevention in high-grade asymptomatic carotid stenosis.
  • While intensive medical management is primary, surgical or interventional procedures remain important for specific patient groups.
  • The study highlights the importance of operator expertise and patient selection in carotid revascularization outcomes.