Key result
Viscoelastic stress-strain models provide better curve fitting than simple elastic models for LV diastolic properties.
Population
30 patients including those with normal left ventricular function, moderate-to-severe aortic regurgitation…
Design
Cross-sectional
Authors
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Viscoelastic modeling may refine diastolic assessment in cross-sectional data; leaves open prospective validation before clinical use.
Observational (n=30)
Absolute Event Rate: 0.96% vs 0.93%
A viscoelastic model better describes left ventricular diastolic properties than a simple elastic model, revealing increased viscoelastic stiffness in congestive cardiomyopathy independent of muscle mass.
Hess et al. (1979) conducted an observational in Normal left ventricular function, aortic regurgitation, or congestive cardiomyopathy (n=30). Viscoelastic stress-strain model vs. Simple elastic stress-strain model was evaluated on Curve fitting (r value) of the stress-strain relationship. A viscoelastic stress-strain model provided significantly better curve fitting than a simple elastic model (r = 0.96 vs 0.93) for assessing diastolic properties of the left ventricle.
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