[Simulator of cardiac activity signals]. / Imitator signalov serdechnoi deiatel'nosti.

Imitators of physiological signals are in need for production of electronic medical equipment and modeling the biological systems. The known imitators are rather intricate and incapable to control the output signal within a wide range. The imitator now offered allows to reproduce any signal that reflects the activity of a cardiovascular system under normal and pathologic conditions.

[Operational control of the effectiveness of assisted blood circulation]. / Operativnyi kontrol' éffektivnosti vspomogatel'nogo krovoobrashcheniia.

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.