Ev. Roitman et al., MATHEMATICAL-MODELING OF BLOOD AGGREGATIO N IN PATIENTS OPERATED ON IN CONDITIONS OF EXTRACORPOREAL-CIRCULATION, Gematologia i transfuziologia, 41(4), 1996, pp. 7-10
Low blood viscosity was not related to homeostasis in patients undergo
ing surgery under extracorporeal circulation. Blood viscosity early af
ter surgery was similar both in hypo-and hypercoagulation. Therefore,
assessment of blood viscosity in such patients by santipuases provokes
diagnostic mistakes. Real situation with blood aggregation can be pro
vided by mathematical model of non-Newton's blood properties based on
viscosity-deviation rate relationships. The results showed a decrease
of blood fluidity suggesting feasibility of microcirculatory disturban
ces even in surgical patients with normal central hemodynamics and hem
ocoagulation. According to non-Newton's blood properties, the nation '
'norm'' is not applicable to blood viscosity, while the above mathemat
ical model allows comparing blood aggregation in any patients without
artificial standardization of hemorheological data.