Rheological parameters as prognostic factors in blood loss

The aim of the work was to study the rheological status in experimental blood loss of varying severity. The experiments were carried out on out bred male rats. Depending on the severity of blood loss, the animals were divided into subgroups. In each subgroup, the erythrocyte aggregation index, erythrocyte membrane deformability index, and blood plasma viscosity were measured. As a result of statistical data processing, it was found that in case of blood loss of any severity, erythrocyte aggregation plays a leading role, followed by the blood viscosity parameter, and changes in membrane deformability are significant only in the decompensatory phase. Thus, it is once again emphasized that with blood loss, the presence of a persistent, starting from the first stage, changes in the rheological status, which mainly depends on the profile of erythrocyte aggregation. These experimental data, coupled with changes in the viscosity and membrane deformability of erythrocytes in the later stages of blood loss, lead to the idea of a careful use of the mass of erythrocytes for the treatment of critical conditions caused by blood loss. Continuation of experimental studies and translation of their findings into clinical medicine will most likely improve treatment tactics and increase its effectiveness in the treatment of patients with hemorrhagic shock.