A model for the formation, growth, and lysis of clots in quiescent plasma. A comparison between the effects of antithrombin III deficiency and protein C deficiency
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Abstract
A mathematical model comprised of 23 reaction-diffusion equations is used to simulate
the biochemical changes and transport of various reactants involved in coagulation
and fibrinolysis in quiescent plasma. The growth and lysis of a thrombus, as portrayed
by the model equations, is governed by boundary conditions that include the surface
concentration of TF-VIIa, the generation of XIa by contact activation (in vitro),
and the secretion of tPA due to endothelial activation. We apply the model to two
clinically relevant hypercoagulable states, caused by deficiency of either antithrombin
III or protein C. These predictions are compared with published experimental data
which validate the utility of the developed model under the special case of static
conditions. The incorporation of varying hemodynamic conditions in to the current
fluid static model remains to be performed.