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Two-dimensional echocardiography in evaluating left ventricular function.

P Gregor, P Widimský, V Cervenka

    Cor Et Vasa
    |January 1, 1984
    PubMed
    Summary

    Two-dimensional echocardiography reliably determines left ventricular volumes and ejection fraction, outperforming one-dimensional methods, especially in patients with abnormal heart geometry. This cardiac imaging technique offers accurate assessment for improved patient diagnosis.

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    Area of Science:

    • Cardiology
    • Medical Imaging
    • Echocardiography

    Background:

    • Accurate measurement of left ventricular (LV) volumes and ejection fraction (EF) is crucial for diagnosing and managing cardiac conditions.
    • Traditional methods like ventriculography are invasive, while one-dimensional echocardiography has limitations, particularly in complex cardiac geometries.

    Purpose of the Study:

    • To evaluate the reliability of two-dimensional (2D) sector echocardiography in determining left ventricular volumes and ejection fraction.
    • To compare the accuracy of 2D echocardiography with biplane ventriculography and one-dimensional (1D) echocardiography.

    Main Methods:

    • Mechanical sector and M-mode echocardiography were used to examine 65 patients.
    • Left ventricular volumes and ejection fraction were calculated using echocardiography.

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  • Results were compared against biplane ventriculography, considered a gold standard.

    • Main Results:

    • 2D echocardiography demonstrated high reliability in determining LV volumes and EF, with correlation coefficients of 0.74 (end-diastolic volume), 0.85 (end-systolic volume), and 0.78 (ejection fraction) compared to ventriculography.
    • 1D echocardiography showed significantly lower correlations, especially in patients with segmental wall motion abnormalities or abnormal LV geometry.
    • 2D echocardiography provided reliable estimations even in patients with complex cardiac conditions.

    Conclusions:

    • Two-dimensional sector echocardiography is a reliable, non-invasive method for assessing left ventricular volumes and ejection fraction.
    • This technique offers significant advantages over 1D echocardiography, particularly in patients with altered cardiac structure and function.
    • 2D echocardiography enhances diagnostic capabilities in cardiology, especially for challenging patient cases.