Fig. 1From: Evaluation of the effect of apixaban using a viscoelastic coagulation assay with Russell’s viper venom reagentA waveform of the RVV-test after anesthesia induction. Clotting time (CT) is prolonged to 167 s (normal range 48–77 s). CT is a time duration between initiation of the test and the time when clot firmness reaches 20 mm. CT indicates the ability of thrombin generation and is prolonged by anticoagulants such as heparin. MCF represents maximum clot firmness which is defined by plasma fibrinogen level and platelet number and functionBack to article page