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Related Experiment Videos

Two-dimensional echocardiographic evaluation of right ventricular ejection fraction: comparison between three

E Vitolo1, D Castini, A Colombo

  • 1Istituto di Scienze Biomediche Bassini, Università di Milano, Italy.

Acta Cardiologica
|January 1, 1988
PubMed
Summary

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Simpson's rule accurately determines right ventricular ejection fraction in chronic obstructive pulmonary disease patients. This 2D echocardiography method offers reproducible and precise measurements for better patient management.

Area of Science:

  • Cardiology
  • Pulmonology
  • Medical Imaging

Background:

  • Chronic cor pulmonale is a serious complication of chronic obstructive pulmonary disease (COPD).
  • Accurate assessment of right ventricular ejection fraction (RVEF) is crucial for managing COPD-related heart conditions.
  • Traditional methods for RVEF assessment can be invasive or limited in accessibility.

Purpose of the Study:

  • To evaluate the accuracy and reproducibility of three 2D echocardiography geometric formulae for determining RVEF.
  • To compare echocardiographic RVEF measurements with equilibrium radionuclide angiocardiography (ERNA).
  • To identify the most reliable echocardiographic method for RVEF assessment in chronic cor pulmonale patients.

Main Methods:

  • Twelve patients with chronic obstructive pulmonary disease and chronic cor pulmonale were studied.

Related Experiment Videos

  • 2D echocardiography was performed using apical and subcostal views to obtain four-chamber and right ventricular outflow tract views.
  • Right ventricular volumes and RVEF were calculated using the biplane area-length method, Simpson's rule, and the pyramidal method.

    • Main Results:

    • Satisfactory echocardiographic views were obtained in 83.3% (four-chamber) and 66.6% (RV outflow tract) of patients.
    • No significant statistical differences were found between repeated echocardiographic measurements by the same operator, indicating good reproducibility.
    • Simpson's rule demonstrated the highest correlation coefficient (r=0.96, p<0.001) with ERNA, outperforming the biplane area-length (r=0.63, p<0.05) and pyramidal methods (r=0.50, not significant).

    Conclusions:

    • Simpson's rule is a highly accurate and reproducible echocardiographic method for determining RVEF in patients with chronic cor pulmonale due to COPD.
    • The findings suggest that 2D echocardiography, particularly using Simpson's rule, can reliably assess right ventricular function in this patient population.
    • This non-invasive technique offers a valuable tool for clinical decision-making and monitoring disease progression.