Theoretical comparison between the model-based and amplitude-based compliance estimation techniques.
A theoretical study has been performed to assess how the pulse pressure variation affects results of the arterial compliance measurement. Two asymmetric arctangent models for the arterial pressure-volume (P-V) relationship have been used by applying model-based and amplitude-based compliance estimation techniques. The results demonstrate that for near-zero transmural pressure the model-based values of the compliance are systematically higher than those estimated by the amplitude-based calculation technique. Increasing of the pulse pressure amplitude causes a considerable reduction in the amplitude-based compliance estimate. For a P-V relationship with a lower steepness, a reduction in the amplitude-based compliance versus transmural pressure is smaller.
Talts
Jaak
J
Department of Physiology, University of Tartu, Estonia. jaak.talts@ut.ee
Raamat
Rein
R
Jagomägi
Kersti
K
Kivastik
Jana
J
D000818:Animals; D001794:Blood Pressure; D006801:Humans; D008955:Models, Cardiovascular; D011674:Pulse