Why the study?
The LV end-diastolic pressure-volume ratio varies widely and depends heavily on inflow and resistance boundary conditions, complicating the assessment of left ventricular diastolic distensibility.
Comparison
Six calculated indices of LV diastolic stiffness
Key result
Diastolic stiffness index No. 4 was the only measure accounting for increased LV stiffness over diastole, showing weak dependence on LV hemodynamics for assessing distensibility.
Authors
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Index No. 4 may aid LV diastolic assessment; leaves open prospective validation before clinical adoption.
Diastolic stiffness index No. 4 is a robust measure for assessing LV diastolic distensibility across various cardiac pathologies, independent of LVEF and heart rate.
Kapelko et al. (2024) studied Left ventricular diastolic distensibility. Diastolic stiffness index No. 4 vs. Other calculated indices of LV diastolic stiffness was evaluated on Stability, variation, and correlation coefficients with different hemodynamic parameters. Diastolic stiffness index No. 4 was the only measure accounting for increased LV stiffness over diastole, showing weak dependence on LV hemodynamics for assessing distensibility.