Aperiodic noise modulation of heart pump rigidity in a hydrodynamic model generates 0.1-Hz blood flow oscillations, providing insight into cardiovascular hemodynamics.
Model results should not change practice; leaves open whether stochastic perturbations drive 0.1-Hz oscillations in vivo.
In the framework of our previous hypothesis about the participation of structural and hydrodynamic properties of the vascular bed in the formation of the 0.1-Hz component of blood flow oscillations in the human cardiovascular system and on the basis of the reduced hydrodynamic model, the role of additive stochastic perturbations of the operation of the single-chamber pump that simulates the heart was investigated. It was shown that aperiodic noise modulation of the rigidity of the walls of the pump or its valves generates low-frequency oscillations of pressure and blood flow velocity of arterial vascular bed with the maximum amplitude at a frequency close to 0.1 Hz.
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Гриневич et al. (2016) studied this question.
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