Beat Pressure and Comparing it with Ascending Aorta Pressure in Normal and Abnormal Conditions

TL;DR

This paper presents a detailed lumped-parameter model of the human cardiovascular system, accurately simulating aortic and brachial pressures, and analyzing effects of obstructions using electrical analogies.

Contribution

It introduces an advanced 36-vessel cardiovascular model with segmented aortic pressure simulation, improving accuracy and demonstrating the potential of brachial pressure as a substitute for aortic pressure.

Findings

Simulated aortic pressure closely matches measured data.

Brachial pressure signals are similar to aortic pressure.

Obstructions in the aorta and brachial artery affect pressure profiles.

Abstract

Lumped method (Electrical analogy) is a quick and easy way to model human cardiovascular system. In this paper Lumped method is used for simulating a complete model. It describes a 36-vessel model and cardiac system of human body with details that could show hydrodynamic parameters of cardiovascular system. Also this paper includes modeling of pulmonary, atrium, left and right ventricles with their equivalent circuits. Exact modeling of right and left ventricles pressure with division of ascending aorta into 27 segments increases the accuracy of our simulation. In this paper we show that a calculated pressure for aorta from our complex circuit is near to measured pressure by using advanced medical instruments. Also it is shown that pressure graph from brachial is so near to aortic pressure because of this its pressure signal is usable instead of aortic pressure. Furthermore, obstruction in ascending aorta, brachial and its effects has been showed in different figures.