Regional Work Analysis of Heart Muscle by Using Numerical Simulation

Abstract

The regional work per unit volume is evaluated based on the stress and strain distribution in a cardiac wall calculated by using 3-dimensional finite element method. The total work of left ventricular wall is compared with the external work evaluated from the pressure-volume relationships of left ventricle. It is recognized as a result that the efficiency of the left ventricle is around 20%. In conclusion we examine a possibility of using the regional work of myocardial muscle fiber as an universal index of cardiac function.