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Quantification of mitral valvular incompetence.

J F Lopez, S Hanson, R C Orchard

    Catheterization and Cardiovascular Diagnosis
    |January 1, 1985
    PubMed
    Summary
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    Diagnosing mitral incompetence can be done using the regurgitant index (RI) via dye dilution curves or regurgitant fraction (RF) via angiocardiography. Cineangiocardiography is less reliable due to subjectivity.

    Area of Science:

    • Cardiology
    • Medical Imaging
    • Hemodynamics

    Background:

    • Mitral incompetence diagnosis requires accurate assessment of valvular function.
    • Existing diagnostic methods vary in reliability and objectivity.

    Purpose of the Study:

    • To evaluate the diagnostic value of three techniques for assessing mitral incompetence.
    • To compare indicator dilution curves, left ventricular volumes, and cineangiocardiography.

    Main Methods:

    • Analyzed hemodynamic and angiographic data from 147 individuals (100 with mitral incompetence, 47 normal).
    • Assessed mitral incompetence using regurgitant index (RI) from indicator dilution curves and regurgitant fraction (RF) from left ventricular volumes.
    • Utilized cineangiocardiography in a subset of patients for comparison.

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    Main Results:

    • Both RI and RF effectively distinguished between normal individuals and those with mitral incompetence.
    • Severe mitral incompetence correlated with RI >35% and RF >55%.
    • Cineangiocardiography proved subjective and less useful for quantification.

    Conclusions:

    • Indicator dilution curves (RI) and left ventricular volumes (RF) are valuable tools for diagnosing mitral incompetence.
    • Cineangiocardiography's subjectivity limits its utility in quantifying mitral incompetence severity.
    • Further research may refine hemodynamic assessments for more precise quantification.