Key result
Radionuclide LVEF correlates strongly with contrast LVEF at rest and during exercise.
Why the study?
Does radionuclide left ventriculography correlate with contrast left ventriculography for measuring ejection fraction at rest and during exercise in patients with known or suspected coronary artery disease or aortic valvular disease?
Cross-Sectional (n=31)
Does radionuclide left ventriculography correlate with contrast left ventriculography for measuring ejection fraction at rest and during exercise in patients with known or suspected coronary artery disease or aortic valvular disease?
Effect estimate: r = 0.89 at rest and r = 0.90 with exercise
Exercise radionuclide ventriculography provides ejection fraction measurements that correlate well with contrast ventriculography, justifying its clinical application.
May support noninvasive EF assessment during exercise; leaves open larger prospective validation.
Thirty-one patients with known or suspected coronary artery disease or aortic valvular disease were studied at rest and during supine bicycle exercise with radionuclide and contrast left ventriculography. The radionuclide ejection fractions calculated independently by three observers correlated well at rest (r = 0.96) and with exercise (r = 0.94). The calculated values also correlated well with those obtained for contrast ventriculography using the area-length method Dodge (r = 0.89 at rest and r = 0.90 with exercise). The results suggest that further clinical applications of exercise radionuclide ventriculography are justified.
No takes yet. Share an insight, caveat, or question.
Brady et al. (1979) conducted a cross-sectional in Known or suspected coronary artery disease or aortic valvular disease (n=31). Radionuclide left ventriculography vs. Contrast left ventriculography was evaluated on Correlation of ejection fractions between radionuclide and contrast ventriculography (r = 0.89 at rest and r = 0.90 with exercise). Radionuclide left ventriculography ejection fractions correlated well with those obtained by contrast ventriculography at rest (r = 0.89) and during exercise (r = 0.90).
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: