[Effect of surgical trauma on the rheological properties of the blood]

The rheological properties of blood (viscosity, thrombocyte and erythrocyte aggregation activity, ability of erythrocytes for deformation) were studied in 49 patients subjected to surgical operation of different duration and volume of blood loss. It was found that a surgical trauma causes alterations in rheological properties of blood. The degree of hemorheological deviations was shown to correlate with the severity of surgery. In order to reduce the amount of postoperative complications in the patients it is necessary to investigate the main rheological parameters and their correction.