Study of Rheological Properties in Physiological Pregnancy

We studied pregnant women in the I and II trimesters and a control group of women in the 2nd phase of the menstrual cycle. All women measured the rheological properties of the blood, such as red blood cell aggregation, red blood cell deformation, blood plasma viscosity, and hematocrit. It turned out that rheological changes (deterioration) advancing in the first trimester tend to stabilize in the second trimester. This says, from our point of view, about the participation of a rheological system in the adaptation mechanism.