Abstract
A new approach to the problem of modeling the blood vessels attached to the heart especially pulmonary artery is presented. The analyses are based on a dynamic nonlinear compartmental model that describes the transfer of pressure energy between two sites in that vessel. The system kernels are represented by two paths, each path contains a nonlinear network in cascade with a linear dynamics followed by a nonlinear transformation. The first path reflects the dynamic compliance of the vessel under pulstile action. The second path represents the variations of input impedance along the cardiac cycle. An experiment with (20) patients was performed to validate the model output especially in cases with aneurysm.
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