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Coagulation is initiated by tissue factor (TF) exposure, which, with factor (F)VIIa, activates FIX and FX, which in turn, with FVIII and FV as cofactors, respectively, results in thrombin formation and subsequent conversion of fibrinogen to fibrin. Thrombin activates FXI, FVIII, and FV, amplifying the coagulation…
Figure 58-2 Fibrin formation and dissolution. (A). Fibrinogen is a trinodular structure consisting of 2 D domains and 1 E domain. Thrombin activation results in an ordered lateral assembly of protofibrils (B) with noncovalent associations.
Sites of action of the four major physiologic antithrombotic pathways