[Correlation between Willebrand's factor level and antithrombogenic activity of the vascular wall in patients with unstable angina pectoris].

The study of relationships between the level of Willebrand's factor (WF) and vascular wall antithrombogenic activity (VWAA) in patients with unstable angina (UA) has demonstrated that NA patients have high WF and VWAA activity; that in the control group there is a positive correlation between WF and VWAA which reflects a normal mechanism of thrombogenesis prevention, while UA patients have this correlation negative which may indicate impairment of mechanisms of vascular-thrombocytic hemostasis.