Cathecolamins used in cardiogenic shock augment the myocardium contractility, but increase the O₂ consumption and the incidence of cardiac arrhythmia. The intraaortic balloon pump reduces cardiac work by decreasing afterload, has beneficial influence on myocardial O₂ delivery/ demand ratio, increases coronary blood flow, cardiac output. Objective. We studied the efficiency of cathecolamins and intraaortic balloon pump in the treatement of postoperative cardiogenic shock. Material and methods. We made a retrospective study on patients having openheart surgery at Cardiovascular Surgery Tg-Mures. We studied patients with cardiogenic shock: in group I. were enrolled patients treated with inotropics; in goup II. were included patients treated with inotropics and mechanical devices. Conclusions. The intraaortic balloon pump was efficient in the treatment of cardiogenic shock: it increased the cardiac output, decreased the systhemic vascular resistence, increased the peripheral blood flow, decreasing the number of organ dysfunction caused by tissue hypoperfusion, and enabled to decrease doses of inotropics, so preventing their vasoconstricting and arrhythmogenic side effects.
Keywords: cardiac output, tissue hypoperfusion, sympathomimetic agents, inotropic index, afterload