Simulation of renal artery stenosis using cardiovascular electronic system

Abstract

This paper describes simulation of stenosis in renal artery. Using commercially softwares, it is possible to study and model the cardiovascular system and its pathologies. Geometrical data of renal artery has been extracted from the physiological texts. Locations of hypothetical stenosis is placed in the middle of the artery. The pressure drops which are caused by stenosis are calculated using CFD method. The blood pressure is assumed to be laminar, viscous and incompressible. The applied inlet velocity profile is pulsatile according to wormsley equations. Furthermore, the compliance variations which caused by stenosis are determined using approved formulas. The obtained pressure drops and calculated compliances are studied using an equivalent electronic circuit representing cardiovascular system. The results of the simulation including pressure graphs exhibit the effects of the renal stenosis on the cardiovascular system and they are compared with the relevant experimental observations and the results are in good agreement with them.