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Left Main Coronary Artery Disease and Outcomes after Percutaneous Coronary Intervention for Chronic Total Occlusions

Max-Paul Winter1, Georg Goliasch1, Philipp Bartko1

  • 1Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, 1090 Vienna, Austria.

Journal of Clinical Medicine
|April 3, 2020
PubMed

Insights

Left main coronary artery (LMCA) disease in patients with chronic total occlusions (CTO) significantly increases mortality risk. Precise anatomical evaluation is crucial for selecting patients who benefit most from interventions like percutaneous coronary intervention (PCI).

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Vascular Medicine

Background:

  • Left main coronary artery (LMCA) disease in patients with chronic total occlusions (CTO) often leads to coronary artery bypass grafting referrals.
  • The specific impact of LMCA disease on CTO patients is not well understood.
  • Precise coronary anatomy evaluation is vital for selecting patients for CTO percutaneous coronary intervention (PCI) or other revascularization strategies.

Purpose of the Study:

  • To assess the impact of LMCA disease on long-term outcomes in patients undergoing PCI for CTO.
  • To determine if LMCA disease is a significant predictor of mortality in CTO patients.

Main Methods:

  • A cohort of 3860 consecutive patients undergoing PCI for at least one CTO lesion was analyzed.
  • The predictive value of concomitant LMCA disease was investigated.
  • All-cause mortality served as the primary study endpoint.

Main Results:

  • LMCA disease was significantly associated with increased mortality.
  • Patients with LMCA disease had a crude hazard ratio of 1.59 (95% CI 1.23-2.04, p < 0.001) compared to those without.
  • These findings remained consistent after adjustment for clinical confounders.

Conclusions:

  • LMCA disease is linked to excess mortality in patients with CTO.
  • Specific anatomical factors, such as CTO of the circumflex artery, identify a high-risk patient group.
Abstract

Keywords:
CTOPCIchronic total occlusioncoronary artery disease

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