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Evaluation of tricuspid regurgitation by blood flow pattern in the hepatic vein using pulsed Doppler technique

K Sakai, K Nakamura, G Satomi

    American Heart Journal
    |September 1, 1984
    PubMed

    Insights

    Pulsed Doppler and echocardiography can evaluate tricuspid regurgitation (TR) severity by assessing hepatic vein (HV) flow patterns. This noninvasive method accurately estimates right atrial and ventricular pressures.

    Area of Science:

    • Cardiology
    • Medical Imaging
    • Diagnostic Techniques

    Background:

    • Tricuspid regurgitation (TR) is a significant valvular heart disease.
    • Accurate assessment of TR severity is crucial for patient management.
    • Noninvasive methods for evaluating TR and related hemodynamic parameters are needed.

    Purpose of the Study:

    • To evaluate the utility of combined pulsed Doppler and two-dimensional echocardiography in assessing tricuspid regurgitation (TR) severity.
    • To correlate Doppler-derived parameters with invasive pressure measurements.

    Main Methods:

    • Sixty patients with valvular heart disease underwent evaluation using pulsed Doppler and two-dimensional echocardiography.
    • Hepatic vein (HV) blood flow patterns, inferior vena cava dimension (IVCD), and hepatic vein dimension (HVD) were assessed.
    • Right ventriculography was used as a reference standard for TR classification (mild, moderate, severe).

    Main Results:

    • Significant differences in IVCD and HVD were observed between severe TR and other groups (p < 0.005).
    • Abnormal HV flow patterns, particularly reverse hepatic flow during systole (81% of severe/moderate TR), helped differentiate TR severity.
    • Doppler shifts correlated well with right atrial pressure (RAP) and right ventricular end-diastolic pressure (RVEDP) (r = -0.72, -0.64; p < 0.001).

    Conclusions:

    • Combined pulsed Doppler and echocardiography provide a useful, noninvasive method for evaluating significant TR.
    • This technique allows for rapid TR severity assessment and estimation of RAP and RVEDP.

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