[Hypercoagulation states]

Hypercoagulability is a condition where as a result of certain pathological changes in the blood inadequate cumulation of thrombocytes or fibrin occurs which finally can lead to arterial or venous thrombosis, depending on vascular wall damage. In the submitted review the authors analyze the most important inborn and acquired causes of hypercoagulation states. As to inborn causes, deficiens of natural anticoagulation proteins (antithrombin III, protein C, protein S) are most important as well as dysfibrinogenaemia, impaired fibrinolysis associated with deficiency of natural activators of fibrinolysis or increased activity of their inhibitors and homocystinuria. The most frequent acquired causes of hypercoagulation states are the presence of anticardiolipin antibodies ("lupus anticoagulans"), pregnancy, the use of oral contraceptives, malignity, nephrotic syndrome, postoperative conditions, diabetes mellitus and some other diseases.