Inertial-viscoelastic minimal model of the arterial system reconciles arterial compliance estimations

Background: The arterial system is viscoelastic rather than purely elastic. There exist various methods to characterize the purely elastic nature of arterial compliance, each method yielding different values. The pulse pressure method (CPPM), estimating compliance by matching the pulse pressure (PP) of a two-element Windkessel to measured PP, yields consistently lower values than the pressure decay time method (Cdec) and diastolic area method (Carea). An alternative inertial-viscoelastic model (IVEMM) that is viscoelastic and frequency-dependent rather than purely elastic and constant has been shown in dogs to reconcile the various compliance estimation methods.

Source: Artery Research - November 24, 2015 Category: Cardiology Authors: Timothy Phan, John Li, Maheshwara Koppula, Izzah Vasim, Swapna Varakantam, Julio Chirinos Source Type: research