Summary
We replaced Dopplerderived stroke volume in the continuity equation (method A) by either right heart catheterizationderived stroke volume (method B) or cardiovascular magnetic resonance–derived stroke volume (method C) to calculate aortic valve area in 20 consecutive patients with moderate or severe aortic stenosis. Comparison of both hybrid methods (methods B and C) by Bland–Altman analysis showed a mean difference near zero, a spread within two standard deviations and very similar limits of agreement. More importantly, all patients were classified into the same category of severity by both methods.
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Haghi, D., Suselbeck, T., Fluechter, S. et al. A hybrid approach for quantification of aortic valve stenosis using cardiac magnetic resonance imaging and echocardiography:. Clin Res Cardiol 95, 162–167 (2006). https://doi.org/10.1007/s00392-006-0355-1
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DOI: https://doi.org/10.1007/s00392-006-0355-1