[Comparative analysis in the use of natural and artificial vascular grafts on hematologic characteristics in patients].

Investigation of two groups of patients was performed. Both male and female patients, 34 to 69 years old, in which extracorporeal circulation was established in the course of open heart and ascendental aorta surgeries were included in the investigation. The first group consisted of 20 patients with surgically revascularized miokard by triple venous grafts, and the second included 20 patients with partial replacement of ascendental aorta using synthetic dacron graft. It was concluded that extracorporeal circulation leads to a significant decrease of platelet count and agreability after surgery, as well as decrease of red blood cell count and hemoglobin and hematocrit value. However, contact of circulating blood with the synthetic dacron graft surface, in surgical procedures on ascendental aorta, leads consequently to a significantly higher decrease of platelet count and agreability, with the significant decrease of red blood cell count and decrease of hemoglobin and hematocrit value. Based on the obtained results it is possible to plan requirements for allogenous blood/red blood cells which are significantly higher in patients undergoing partial replacement of ascendental aorta using artificial dacron graft compared with patients after surgical revascularization of miocard with triple venous graft.