Coagulation disorder during liver transplantation

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Abstract
Detailed haemostatic changes were investigated during eight liver transplantations. The patients were divided into two groups; group 1 had minor operative bleeding (four cases) and group 2 had major bleeding (four cases). Group 2 had lower levels of platelets, fibrinogen, factor V (FV), and a2-antiplasmin than group 1, and the thromboelastography showed fibrinolysis. In both groups, plasma tissue-plasminogen activator levels rose slightly. After revascularization of the graft liver, reductions in the values of PT, fibrinogen, FV and FVII were noted, along with a prolongation of the PTT and an increase in thrombin – antithrombin III complex levels. Plasma levels of protein C, protein S, antithrombin III, and plasminogen remained relatively stable throughout the operation. These results show that the preceding fibrinolysis and subsequent superimposed activation of the clotting system are the main causes of coagulopathy during liver transplantation, which correlate with the amount of operative haemorrhage and the abnormalities found in haemostatic tests.

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