Comparison of the Early Results of Coronary Artery Bypass Grafting With and Without Extracorporeal Circulation

50 patients undergoing coronary artery bypass grafting (n=50, two groups of 25)

Coronary artery bypass grafting without extracorporeal circulation (off-pump)

Standard cardiopulmonary bypass technique (on-pump)

Early postoperative criteria including hemodynamic data (cardiac index, systemic vascular resistance, left- and right-ventricular stroke-work indices, inotropic and mechanical support needs), enzyme levels (CK-MB and SGOT), mortality, perioperative infarction rate, homologous transfusion requirements, and symptomatology in the first follow-ups