Digital Model of Aortic Function



Introduction:
Simulation of aortic function is based on a simple “Windkessel” model.

Equipment:

PC with simulation programme Aortic_Model 2018



















Procedure:

1.       Start the program Aortic_Model 2018 by double-clicking the icon.

2.       New window opens; maximize it in order to reveal the buttons legend.

·         in the upper part of the screen you can see the buttons + a –; use this buttons to
increase or decrease the value of parameters described bellow

·         you will work with four parameters: stroke volume (SV, preset 70 ml), heart rate (HR,
preset 75/min), peripheral resistance (R, preset 1.0 mmHg∙s/ml) a compliance (C, preset 1.2
ml/mmHg). Do not change the pre-set value of time (10 seconds) during the whole exercise.

·         There are three buttons in the upper right corner: Graph, Clear graph and Reset
parameters. By clicking Graph the graphs modelling changes of blood pressure in the aorta and
changes of blood flow across the aortic valve will be created. Using Clear graph will delete this
graph  Reset parameters is used to return values of abovementioned parameters to pre-set values.

·         window in the middle part of the screen represents the changes of blood pressure in the
aorta according to set parameters; axis x represents time and axis y blood pressure in mmHg

·         window in the bottom part of the screen represents the changes of blood flow across the
aortic valve; axis x represents time and axis y represents flow in mL/s.