[Role of the hemostasis in unstable angina pectoris]

Haemostasis plays an important role in the development of cardiac complications--acute coronary syndromes. The thrombus formation in coronary arteries, related to unstable atherosclerotic plaque rupture is the basic pathogenesis of acute coronary syndromes. The balance between coagulation and fibrinolytic system influences on ruptured atherosclerotic plaque and following acute coronary syndrome. Critical narrow or total occlusion of the coronary artery could be a consequence of this interaction. Researches are continued to determine precisely role of haemostasis disorders in unstable angina pectoris. The aim of this paper is to review the literature data concerning haemostatic risk factors in unstable angina pectoris. Fibrinogen, thrombocytes, factor VIII, von Willebrand factor (vWF), thrombomodulin (TM), plasminogen activator inhibitor--type 1 (PAI-1), tissue-plasminogen activator (t-PA) and other haemostatic factors, play more or less essential role in unstable angina pectoris. However further investigations are needed to determine their utility and to search for new and better haemostatic factors of acute coronary syndromes.