[Activated coagulation time and the concentration of heparin in assessing the level of blood heparinization during operations using artificial blood circulation].

Blood heparinization was assessed, using two techniques (activated coagulation time--ACT and heparin concentration) in 31 patients during cardiopulmonary bypass surgery. It has been shown that ACT-technique, not always revealing heparin concentration, may serve as a criterion for blood heparinization adequacy during cardiopulmonary bypass, as in every case it reflects individual changes in anticoagulant blood activity.