Analysis of Baroreflex Function in Cardiovascular Variability Model

The proper functioning of the Cardiovascular system is dependent on several tissues like the heart, blood, arteries, and veins. These tissues are in contact with each other. In this paper, we present a cardiovascular model based on equivalent mathematical relations in Simulink environment for analyzing the changes that occur due to baroreceptors. The system aims to quantify and depicts the relation between various cardiac parameters like blood pressure, heart rate, stroke volume for different delays. The cardiovascular output is determined by stroke volume and heart rate, with heart rate being determined by blood pressure. A change in blood pressure will cause the appropriate variation in heart rate and cardiac output individually. So, in this work, a closed-loop Simulink system is used for analyzing the variation through the baroreflex function with necessary feedback. The simulation response of the various cardiac parameters for different time delays is analyzed using MATLAB-Simulink.