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Right ventricular volume determination by two-dimensional echocardiography

A Saito, K Ueda, H Nakano

    Journal of Cardiography
    |December 1, 1981
    PubMed
    Summary
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    Two-dimensional echocardiography (2DE) estimates right ventricular (RV) volume in congenital heart disease patients. While correlations with angiocardiography are good, 2DE requires further development for reliable clinical use.

    Area of Science:

    • Cardiology
    • Medical Imaging
    • Pediatric Cardiology

    Background:

    • Accurate assessment of right ventricular (RV) volume is crucial in managing congenital heart disease (CHD).
    • Traditional methods like RV angiocardiography (ACG) are invasive.
    • Non-invasive echocardiography offers a potential alternative for RV volume assessment.

    Purpose of the Study:

    • To evaluate the feasibility and accuracy of two-dimensional echocardiography (2DE) for calculating RV volume in patients with CHD.
    • To compare RV volumes measured by 2DE with those obtained by ACG.

    Main Methods:

    • 31 patients with CHD underwent RV volume calculation using a subxiphoidal 2DE approach.
    • Two orthogonal 2DE views (frontal and lateral) were used to trace the RV cavity.

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  • RV volumes were computed using biplane area-length (AL) and Simpson's rule methods.
  • Comparison was made with RV volumes determined by ACG using Simpson's rule.

    • Main Results:

    • Good correlations were observed between 2DE and ACG for RV volume (r = 0.86 by AL, r = 0.85 by Simpson).
    • Limitations included echo dropouts, unusual echoes, and difficulties in tracing the RV cavity.
    • Technical challenges arose from thickened RV myocardium and pulmonary valve identification.

    Conclusions:

    • 2DE can estimate RV volume in CHD patients, showing good correlation with ACG.
    • Current 2DE techniques have limitations impacting clinical accuracy and reliability.
    • Further research and technical advancements are necessary to establish 2DE as a dependable clinical tool for RV volume assessment.