Author(s)

M. Jelenc, M. Kordaš & F. Runovc

Abstract

Equivalent electronic circuit model of cardiovascular system' M. ~elenc', M. ~ o r d a ~ ' & F. ~ u n o v c ~ 1 Faculty of Medicine, University of Ljubljana, Slovenia. 2 Faculty of Natural Science and Engineering, University of Ljubljana, Slovenia Abstract Diastolic and systolic properties of all four cardiac chambers were simulated by using equivalent electronic circuits. Two models were made: the linear model with linear diastolic and systolic pressure-volume relationships, and the nonlinear model, which is a closer approximation to situation in vivo, with nonlinear diastolic pressure-volume relationship. Models of four cardiac chambers were connected to models of pulmonary and systemic circulation, pace-making system of the heart, and pericardium. The result was a functioning model of the cardiovascular system. Aortic pressure, pulmonary artery pressure, atrial pressures, cardiac output, and ventricular volumes were analysed in three different settings of the model, where either atrial cont

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