Coronary revascularization alone or with mitral valve repair: outcomes in patients with moderate ischemic mitral

Sorel Goland1, Lawrence S C Czer, Robert J Siegel

  • 1Division of Cardiology, Cedars-Sinai Medical Center, Los Angeles, California 90048, USA.

Insights

Coronary artery bypass grafting (CABG) with or without mitral valve repair (MVr) improved patient function. While both approaches showed similar survival, CABG+MVr had higher rates of recurrent mitral regurgitation long-term.

Area of Science:

  • Cardiovascular Surgery
  • Cardiac Medicine
  • Interventional Cardiology

Background:

  • Moderate ischemic mitral regurgitation (IMR) often coexists with coronary artery disease.
  • Surgical management decisions for IMR remain complex, balancing risks and benefits.

Purpose of the Study:

  • To compare outcomes of coronary artery bypass grafting (CABG) alone versus CABG with concomitant mitral valve repair (CABG+MVr) in patients with moderate IMR.
  • To evaluate the impact of surgical strategy on mitral regurgitation severity, functional status, and survival.

Main Methods:

  • Retrospective analysis of 83 patients with reduced ejection fraction and moderate IMR.
  • Comparison of outcomes between 28 patients undergoing CABG+MVr and 55 patients undergoing CABG alone.
  • Assessment of mitral regurgitation, functional class, and ejection fraction changes over a mean follow-up of 5.1 years.

Main Results:

  • Both CABG and CABG+MVr improved functional class and ejection fraction.
  • Early and intermediate-term survival rates were similar between groups (1-year: 96%, 5-year: 81-87%).
  • CABG+MVr showed greater initial reduction in mitral regurgitation, but higher rates of late recurrence (22% vs. 47% at late follow-up).

Conclusions:

  • Both CABG and CABG+MVr are effective in improving functional class and survival in moderate IMR.
  • CABG+MVr may lead to a higher incidence of late recurrent mitral regurgitation compared to CABG alone.

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