LACK OF IMPACT OF ANGIOPLASTY ON THE TIME-COURSE OF ELEVATED COAGULATION AND FIBRINOLYSIS PARAMETERS IN UNSTABLE ANGINA-PECTORIS

Intracoronary thrombus formation is a common finding in patients with unstable angina pectoris. In a prospective study in 21 patients with u nstable angina pectoris without acute revascularization and in 14 pati ents with acute revascularization (PTCA) treatment, we investigated mo lecular markers of fibrinolysis and coagulation in order to assess whe ther PTCA influences the alterations of the coagulation and fibrinolys is in unstable angina during mid-term follow-up.Thrombin/antithrombin III (TAT)-complexes as markers of the activated coagulation cascade, p lasminogen activator inhibitor-1 (PAI-1), tissue-type plasminogen acti vator (t-PA) and d-dimer levels as indicators of the fibrinolytic syst em were measured serially up to 10 days after admission. Furthermore, antithrombin III (AT III) and fibrinogen were determined. Data of the patients with unstable angina pectoris were compared to 12 age-matched healthy control persons. In patients with unstable angina pectoris, m arked alterations of molecular markers of fibrinolysis and coagulation were found. T-PA-antigen and PAI-1 were elevated in comparison to the control group. There were no significant differences between the pati ents with unstable angina pectoris who needed an acute PTCA and those with only medical treatment either at admission or during follow-up. O ur data indicate that in the patients with unstable angina pectoris, f ibrinolysis and coagulation are disturbed. No significant differences in time course between the patients with and without PTCA treatment ar e found in this study, indicating that interventional procedures with contrast media application and large intravascular artificial surfaces do not affect the course of the alterations in coagulation and fibrin olysis observed in acute coronary syndromes.