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The aim of the given study was to define antithrombogenic and vasodilative vascular wall activity in patients with disturbed function of left ventricle (LV), developed after Q-myocardial infarction; and to specify its role in chronic heart failure (CHF) prognosis. 40 patients after Q-myocardial infarction were examined; compare five group consisted of 20 patients. Antithrombogenic (anticoagulant and fibrinolytic) and vasomotor activity of vascular wall were determined. It was revealed that disturbance of systolic function of left ventricle in patients with CHF is accompanied by decrease of antithrombogenic and vasodilative vascular wall activity. Patients with IV functional class of CHF having long term CHF and blood release value consisted < 33%; during six months of monitoring the number of repeated unfavourable cardiovascular events was essentially increased.