Revascularization for Coronary Artery Disease and Mitral Regurgitation: A Systematic Review and Meta-analysis

Ryaan El-Andari1, Ashlyn Kruggel1, Mitchell Wagner2

  • 1From the Division of Cardiac Surgery, Department of Surgery, University of Alberta, Edmonton, AB.

Insights

Coronary artery bypass grafting (CABG) is associated with lower long-term mortality and heart failure hospitalizations compared to percutaneous coronary intervention (PCI) in patients with multivessel coronary artery disease and ischemic mitral regurgitation. CABG is recommended for eligible patients.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Cardiac Surgery

Background:

  • Coronary artery disease (CAD) and ischemic mitral regurgitation (IMR) frequently coexist.
  • Optimal treatment strategies for patients with both conditions remain unclear.

Purpose of the Study:

  • To compare the outcomes of coronary artery bypass grafting (CABG) versus percutaneous coronary intervention (PCI) in patients with multivessel CAD and IMR.
  • To evaluate long-term mortality, myocardial infarction, stroke, heart failure hospitalizations, and mitral regurgitation recurrence.

Main Methods:

  • Systematic review and meta-analysis of studies comparing CABG and PCI for multivessel CAD with IMR.
  • Searched PubMed and Embase databases.
  • Included 8 studies after full-text review of 1285 identified articles.

Main Results:

  • Initial pooled analysis showed no significant difference in long-term mortality, with considerable heterogeneity.
  • Exclusion of an outlier improved heterogeneity, favoring CABG over PCI for mortality (OR: 1.39, 95% CI: 1.06-1.83).
  • Rehospitalization for heart failure also significantly favored CABG (OR: 1.49, 95% CI: 1.16-1.92).

Conclusions:

  • CABG demonstrated lower rates of long-term mortality and heart failure hospitalizations compared to PCI.
  • CABG is the preferred revascularization strategy for patients with multivessel CAD and IMR who have acceptable surgical risk.
Abstract

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