RESUMEN
For the first time it was established that changes of fibrinogen parameters, dissolved complexes of monomeric fibrinogen (DCMF), products of fibrinogen degradation (PDEF), first and second waves of platelet aggregation, activated partial platelet time (APPT), range index of contact platelet activation (RICPA), general index of thrombophilia (GIT), platelets, prothrombin time, heparin in blood, plasma tolerance to heparin (PTH), time lysis and euglobulin clot (TLEC), lipid peroxidation, antiradical defence ferment, superoxiddismutase (SOD) in patients with acute virus myocarditis of first, second and third group of severity correlate statistically reliably with grade of severity of clinical course of the disease and require correction with medications.