Key result
Preload-adjusted right ventricular maximal power eliminated preload dependency down to 50% of baseline EDV and correlated with preload-recruitable stroke work (r=0.85, P<0.001).
Effect estimate: r = 0.93
p-value: p=<0.0001
Preload adjustment of right ventricular maximal power using a linear relationship with end-diastolic volume provides a preload-independent estimate of RV contractility.
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May aid experimental RV contractility assessment; leaves open human validation before clinical use.
Schenk et al. (2004) studied Right ventricular preload dependency (n=10). Preload adjustment of right ventricular maximal power (PAMP) was evaluated on Linearity of PWR(mx) versus EDV relationship and correlation of V(0PWR) with V(0SW) (r = 0.93, p=<0.0001). Preload-adjusted right ventricular maximal power eliminated preload dependency down to 50% of baseline EDV and correlated with preload-recruitable stroke work (r=0.85, P<0.001).
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