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Outcome of mitral valve plasty or replacement: atrial fibrillation an effect modifier

Oystein A Vengen, Michael Abdelnoor, Arne S Westheim

    Journal of Cardiothoracic Surgery
    |June 4, 2013
    PubMed
    Abstract

    Insights

    Mitral valve plasty (MPL) offers better survival and lower reoperation rates compared to mitral valve replacement (MVR) for mitral valve disease. Careful management of atrial fibrillation risk factors is crucial for optimal outcomes with MPL.

    Area of Science:

    • Cardiovascular Surgery
    • Cardiac Surgery Outcomes
    • Valvular Heart Disease

    Background:

    • Mitral valve plasty (MPL) is increasingly favored over mitral valve replacement (MVR) for mitral valve disease.
    • Understanding long-term outcomes of MPL versus MVR is critical for clinical decision-making.

    Purpose of the Study:

    • To compare the total mortality and reoperation rates between MPL and MVR in patients with mitral valve disease.
    • To evaluate the long-term failure rate of mitral valve plasty.

    Main Methods:

    • A retrospective cohort study of 355 patients undergoing MPL or MVR between 1993 and 2007.
    • Outcomes assessed included total mortality and reoperation rates, with echocardiography for failure rate estimation.
    • Propensity score analysis was used to control for confounding factors.

    Main Results:

    • Mitral valve plasty was associated with significantly lower total mortality (RR = 0.43, p = 0.002) compared to MVR, even after adjusting for 3-vessel disease.
    • MPL showed a lower reoperation rate in patients without atrial fibrillation (AF), but similar rates in those with AF.
    • Long-term failure rates for MPL were found to be low.

    Conclusions:

    • Mitral valve plasty demonstrates superior survival and reduced reoperation rates compared to mitral valve replacement for mitral valve disease.
    • Clinical management should focus on controlling risk factors for atrial fibrillation to improve MPL outcomes.
    • Further validation through randomized clinical trials is recommended to confirm these findings.

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