An Analog Model For The Interaction Between Systemic And Coronary Circulation
An analog electrical model was developed to characterize the hemodynamic relations between the coronary circulation and the systemic circulation. The model for coronary circulation included a nonlinear stenosis resistor, an endocardial channel, and an epicardial channel. The intramyocardial pressure of the left ventricle acted as a back pressure against the coronary flow. The behavior of the complete analog model (both systemic and coronary) was determined by use of a state-space method. As an example, the model was used to simulate and quantify the diastolic augmentation of coronary flow by intraaortic balloon pumping.