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Ischemia is the critical determinant of revascularization benefit: an interventionalist's perspective of the COURAGE

Dean J Kereiakes1

  • 1The Christ Hospital Heart and Vascular Center, Cincinnati, OH, USA.

Reviews in Cardiovascular Medicine
|November 10, 2009
PubMed

Insights

Percutaneous catheter interventions (PCI) for coronary artery disease reduce restenosis but not consistently death or heart attack. Reducing myocardial ischemia magnitude improves revascularization benefits.

Area of Science:

  • Cardiovascular Medicine
  • Interventional Cardiology

Background:

  • Percutaneous catheter-based interventions (PCI) for coronary artery disease have advanced, reducing restenosis.
  • However, consistent reductions in death or myocardial infarction (MI) have not been observed across different devices or compared to medical therapy.

Purpose of the Study:

  • To evaluate the relationship between myocardial ischemia and the benefits of revascularization for chronic stable coronary disease.
  • To compare the effectiveness of PCI versus medical therapy in reducing ischemia and improving clinical outcomes.

Main Methods:

  • The study reviews existing data on PCI outcomes, including balloon angioplasty, bare-metal stents, and drug-eluting stents (DES).
  • It correlates objective evidence of myocardial ischemia, regardless of detection method, with the occurrence of death and nonfatal MI.
  • The effectiveness of PCI in reducing ischemia is compared to medical therapy alone.

Main Results:

  • Myocardial ischemia magnitude is directly proportional to the benefit gained from revascularization (reduction in death or MI).
  • PCI is more effective than medical therapy alone in reducing myocardial ischemia.
  • Advances in PCI technology (DES) and pharmacology have enhanced the magnitude and durability of PCI benefits.

Conclusions:

  • Objective evidence of myocardial ischemia is a key predictor of outcomes in patients with coronary artery disease.
  • PCI, particularly with DES and improved pharmacology, offers greater benefits in reducing ischemia and improving outcomes compared to medical therapy alone.
  • Reducing ischemia is crucial for maximizing the benefits of revascularization in coronary artery disease management.

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