Research of pathology degree and kind influence on the stress in damaged blood vessels areas

Abstract

The aim of the work is to determine of the complex influence of pathology degree and type as well as blood flow turbulence on blood pressure and stress patterns and values in the pathology blood vessels and to find out of the most dangerous pathology cases. Atherosclerosis with sin gle symmetric plated stenosis, symmetric double plated and asymmetric plated stenosis and aneurysm influence on the blood pressure, stresses and flow rate in the pathologic blood vessels were analyzed. Some blood vessels pathological contact points were ob tained by ultrasonic double - scanning duplex method. The calculations show us that blood flow rate in damaged blood vessel areas depending on blood pressure could be 3.4 times bigger than in healthy blood vessels and stresses depending on the pathology type – up to 6.8 times bigger. The most dangerous pathology is double symmetric stenosis case. Turbulent blood flow increases blood pressure and stresses in pathology area up to 1.8 times, as compared to laminar flow. It was found out that blood vessel damage degree has the biggest influence on local blood pressure and stresses.