[Testing the regulation mechanism in inserting an artificial heart by model simulation].

The problems of controlling the cardiac output and the balance of the blood volumes in the circulatory system were discussed for the natural heart as well as for an implanted artificial heart by means of a mathematical function model of the human organism. The control by the Starling mechanism (right atrial pressure) can adapt sufficiently the cardiac output according to the demands of the body, in case the loading steps do not exceed a fixed limit. The false regulation by a strong load of the organism is evidently caused by the limited capacity of the artificial heart and not by the strategy of the control.