Pressure dynamics of blood vessels when modeling pathological processes

Abstract

This paper studies variations of blood pressure acting onto blood vessel wall as well as dynamics of the blood-flow velocity in the pathological blood vessels by evaluating bloodflow turbulence and taking into account that blood is a non-Newtonian fluid. Finite element method was used to construct models of healthy blood vessels, aneurysm, atherosclerosis and deflections. It was determined that local pressure exerted onto blood vessels walls and blood flow velocity variation depend on size and type of the pathology. Local blood pressure in the pathology location could be up to 7 times higher in comparison to systolic blood pressure. It is established that the most dangerous pathology type is atherosclerosis. Obtained research results could be applied in evaluation of human efficiency.