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Related Experiment Videos

Mitral valve surgery in the patient with left ventricular dysfunction.

Vinay Badhwar1, Steven F Bolling

  • 1Section of Cardiac Surgery, The University of Michigan Hospitals, University of Michigan, Ann Arbor, MI 48109-0348, USA.

Seminars in Thoracic and Cardiovascular Surgery
|May 4, 2002
PubMed
Summary

Mitral valve repair using an undersized flexible annuloplasty ring effectively treats severe mitral regurgitation in cardiomyopathy patients. This approach improves heart function and survival rates, offering a new strategy for heart failure management.

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Mitral Valve Repair for Degenerative MR With Moderate or Less Tricuspid Regurgitation: 2-Year Outcomes From a Multicenter Echocardiographic Core Laboratory-Adjudicated Cohort.

Journal of the American College of Cardiology·2026

Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Heart Failure Management

Background:

  • Mitral regurgitation (MR) is a common complication in end-stage cardiomyopathy.
  • Traditional treatments (medical management, valve replacement) yield poor outcomes in these patients.
  • Severe MR significantly impacts left ventricular function and patient prognosis.

Purpose of the Study:

  • To evaluate the safety and efficacy of mitral valve reconstruction for severe MR in cardiomyopathy.
  • To assess outcomes of mitral valve repair using an undersized flexible annuloplasty ring.
  • To determine the impact of this repair on cardiac function and survival.

Main Methods:

  • Prospective study of 125 patients with severe MR (4+), low ejection fraction (8-24%), and NYHA class III/IV symptoms.

Related Experiment Videos

  • All patients underwent mitral valve repair with an undersized flexible annuloplasty ring.
  • Outcomes assessed included mortality, echocardiographic parameters, and functional class.

    • Main Results:

    • Low operative mortality (1 intraoperative, 5 within 30 days).
    • High rates of residual MR reduction (mild/trivial in 7, none in most).
    • Improved ejection fraction, cardiac output, and reduced regurgitant volume at 24 months.
    • Significant improvement in New York Heart Association class (mean 3.2 to 1.8).
    • One- and 2-year actuarial survival rates of 80% and 70%, respectively.

    Conclusions:

    • Mitral valve repair with an undersized flexible annuloplasty ring is safe and effective for MR in cardiomyopathy.
    • The procedure promotes reverse remodeling and restores normal left ventricular geometry.
    • Mitral reconstruction represents a viable treatment strategy for MR in end-stage heart failure.