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Who Should Undergo Chronic Total Occlusions Percutaneous Coronary Intervention and When?: An Evidence-Based Approach

Kevin Soriano1, Ginger Y Jiang1, Lauren Balkan1

  • 1Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts.

The American Journal of Cardiology
|July 20, 2024
PubMed

Insights

Chronic total occlusion (CTO) percutaneous coronary intervention (PCI) can improve angina but doesn't reduce heart attack or death risks. Patient selection for CTO PCI requires careful risk-benefit analysis.

Area of Science:

  • Interventional Cardiology
  • Cardiovascular Medicine
  • Vascular Biology

Background:

  • Chronic total occlusions (CTO) are prevalent in cardiac catheterization patients, associated with poorer prognoses.
  • Percutaneous coronary intervention (PCI) for CTOs shows promise for symptom relief but lacks definitive evidence for reducing major adverse cardiac events.
  • CTO PCI presents higher risks and lower success rates than non-CTO PCI, necessitating careful patient selection.

Purpose of the Study:

  • To review current data on CTO PCI outcomes, including clinical results and procedural risks.
  • To evaluate the role of preprocedural ischemia testing in guiding CTO PCI decisions.
  • To present an approach for managing patients referred for CTO PCI, emphasizing risk-benefit assessment.

Main Methods:

  • Systematic review of existing literature on CTO PCI.
  • Analysis of clinical outcomes, including symptom improvement, myocardial infarction, and mortality.
  • Evaluation of preprocedural ischemia testing strategies.
  • Review of procedural success and risk stratification scores.

Main Results:

  • CTO PCI has demonstrated improvements in anginal symptoms in observational and limited randomized studies.
  • Evidence does not yet confirm a reduction in myocardial infarction or death rates with CTO PCI.
  • CTO PCI remains technically challenging with higher risks and lower success rates compared to non-CTO PCI.

Conclusions:

  • Deciding on CTO PCI requires a thorough risk-benefit analysis and patient discussion.
  • Preprocedural ischemia testing and risk stratification scores aid in patient selection for CTO PCI.
  • A structured approach is essential for optimizing outcomes in patients undergoing CTO PCI.

Keywords:
chronic total occlusion (CTO)percutaneous coronary intervention (PCI)

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