PDF Parameter or Index | Physiological Analog | Significant Findings |
---|---|---|

k, N/m | Chamber stiffness (dP/dV) | k is linearly related to chamber stiffness, dP/dV (21) |

c, N·s^{−1}·m^{−1} | Viscoelastic loss index | In normal LVEF diabetic rats and humans (6, 35), c, but not k, is significantly higher, compared with nondiabetic controls |

x, m_{o} | Effective volumetric load | x is linearly related to the velocity-time integral of the E-wave (20)_{o} |

kx, N_{o} | Peak AV pressure gradient | kx model-derived peak driving force, correlates with peak AV gradient better (2) than 4_{o}v^{2} |

cE_{peak}, N | Maximum resistive force opposing filling | Current study shows cE_{peak} and kx (peak AV gradient) are linearly related independent of load_{o} |

1/2kx_{o}^{2} J | Stored elastic strain energy | Initial (maximum) potential energy available to power filling (20) |

PDF, parameterized diastolic filling;

*k*, spring constant;*c*, damping constant;*x*, initial spring displacement;_{o}*kx*, maximum driving force,_{o}*c*E_{peak}, peak resistive force; AV, atrioventricular; LVEF, left ventricular ejection fraction;*v*^{2}, velocity squared.