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Prevalence and clinical predictors of reverse remodeling in patients with dilated cardiomyopathy

Michael Arad, Tamar Nussbaum, Ido Blechman

    The Israel Medical Association Journal : IMAJ
    |August 30, 2014
    PubMed

    Insights

    Reverse remodeling (RR) improved outcomes in dilated cardiomyopathy (DCM) patients, with 26% experiencing this beneficial change. Early disease and lower initial ejection fraction predicted RR, which was linked to better survival.

    Area of Science:

    • Cardiology
    • Heart Failure Research
    • Medical Imaging in Cardiology

    Background:

    • Contemporary therapies can improve prognosis and restore left ventricular (LV) size and function in patients with heart conditions.
    • Dilated cardiomyopathy (DCM) is a significant cause of heart failure, characterized by LV enlargement and impaired systolic function.

    Purpose of the Study:

    • To determine the prevalence of reverse remodeling (RR) in patients with DCM.
    • To identify clinical features and therapies associated with RR in DCM.
    • To assess the prognostic implications of RR in DCM.

    Main Methods:

    • A cohort of 188 DCM patients underwent two echocardiographic examinations at least six months apart.
    • Reverse remodeling (RR) was defined as an increase in LV ejection fraction (LVEF) of ≥10% and a decrease in LV end-diastolic dimension of ≥10%.
    • Clinical data, including disease history, prior treatments, and electrocardiogram findings, were analyzed.

    Main Results:

    • RR occurred in 26% of DCM patients and was associated with improved LV dimensions, reduced left atrial size, less mitral regurgitation, and lower pulmonary artery pressure.
    • Patients with RR showed improvement in NYHA class and had significantly better outcomes, with no deaths or heart transplants during follow-up compared to the no-RR group.
    • Independent predictors of RR included recent-onset disease, lower initial LVEF, and a normal electrocardiogram; familial DCM and long-standing disease were associated with less RR.

    Conclusions:

    • A significant proportion of DCM patients experience reverse remodeling with contemporary therapies, indicating potential for functional recovery.
    • Optimizing medical therapy and close observation are recommended before considering invasive procedures for DCM patients.
    • Reverse remodeling is a positive prognostic marker in DCM, associated with improved clinical status and survival.
    Abstract

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