[Operational control of the effectiveness of assisted blood circulation]

Introduction into the clinical practice of methods providing for mechanic support to the heart demands equipping the apparatus of assisted circulation with appliances, helping to operatively assess the effect of applying some or other procedures helping the heart performance. The existing criteria do not allow the degree of restoring the contractility of the myocardium under the effect of assisted circulation to be appraised. Criteria may be of help in comparing the energy balance of the myocardium with application of assisted circulation and the energy balance of an unloaded myocardium are proposed.