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  • Title: An experimental study on the effect of plasma expanders on blood coagulability.
    Author: Narita T, Matsumoto I, Kumazawa T, Ikezono E.
    Journal: Bull Tokyo Med Dent Univ; 1979 Mar; 26(1):25-32. PubMed ID: 85502.
    Abstract:
    The effect of various plasma expanders on blood coagulation was studied using the thromboelastography (TEG). Solutions of 5, 10, 20, and 50% concentration of each expander (6% low molecular weight hydroxyethyl-starch (6% Hespander), 3% dextran-40, 6% high molecular weight hydroxyethyl-starch (6 HES), and 6% dextran-70) or solvent (lactated Ringer solution and normal saline) in blood were prepared and their coagulability was examined by TEG. In the low molecular weight plasma expanders (6% Hespander and 3% dextran-40), in general, the coagulability decreased when the concentration was increased. In the high molecular weight plasma expanders (6 HES and 6% dextran-70), the coagulability increased slightly at low and high concentrations and the coagulability was reduced. As a conclusion, at clinically used concentrations of less than 20% in blood, changes in the TEG of the plasma expanders are minimum and have no clinical significance.
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