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[Examination of physical properties of blood in ischemic stroke].

Physical properties of blood and some parameters of blood clotting have been examined in 41 patients with ischemic stroke. Patients have been divided into two groups-with transient ischemic attacks or reversible ischemic neurological deficit (TIA/RIND) and with completed stroke (CS). Blood viscosity has been significantly higher in the examined patients than that in the control group. It has mainly been associated with an increase in blood plasma viscosity and erythrocyte deformation disorders. Rheological disorders has been more prominent in patients with CS and an increase in blood plasma viscosity significantly exceeded the values noted in TIA/RIND group. It has been showed that an increase in erythrocyte rigidity and aggregation leads to a decrease in hematocrit. However, it is not sufficient to maintain normal blood viscosity.