Abstract
On the basis of mechanical and mathematical considerations a nonlinear autonomic dynamic model, describing the left ventricle pulsations in terms of contractile length and internal ventrical pressure is deduced. It is shown under defined conditions the model behaves as a relaxant system, which is investigated quantitatively and qualitatively by asymptotic and phase analysis respectively. Bifurcation analysis of the model transitions from relaxant behavior to another ones is presented. Haemodynamic interpretation of the obtained results, orientated to propose a hypothesis for arterial hypertension and hypotension genesis is made.
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