Table 3

 Multivariate analysis of haemodynamic variables that independently determine transvalvar pressure gradients

VariableTransvalvar pressure gradient
Peak to peakPeakMean
p Value and ΔR2 value for each independent variable in the multivariate predictive model are given. ΔR2 represents the respective contribution of the variable to the variance of TPG.
*Pressure gradient predicted by equation 8 from the energy loss coefficient and the mean systolic flow rate measured by Doppler echocardiography.
NA, not applicable; NS, not significant.
Predicted gradient*
    p Value<0.001<0.001<0.001
Systolic arterial pressureNSNSNS
Diastolic arterial pressureNSNSNS
Pulse pressureNSNSNS
Systemic arterial resistanceNSNSNS
Systemic arterial compliance
    p Value<0.001NSNS
Multivariate model
    p Value<0.001<0.001<0.001