Table 1: TEG values and interpretation TEG Value Normal* Description Measures TEG-ACT clotting time” to initial clotting factors “Activated 80 - 140 sec (rapid) fibrin formation (extrinsic/intrinsic pathways) R time time” to initial fibrin clotting factors (intrinsic “Reaction 5.0 - 10.0 min (conventional) formation pathway) tim” for fibrin cross linkage “Kinetic K time 1.0 - 3.0 min fibrinogen, platelet number to reach 20 mm clot strength 53.0 - 72.0 from baseline to slop of tracing angle fibrinogen, platelet number degrees that represents clot formation 50.0 - 70.0 MA Maximum amplitude of tracing platelet function mm 5.3 - 12.4 G value Calculated of clot strength entire coagulation cascade dynes/cm2 Clot lysis at 30 minutes following LY 30 0 - 3% fibrinolysis MA 2: Suggested TEG-guided transfusion TEG Value Transfuse TEG-ACT > 140 FFP R time > 10 FFP K time > 3 cryoprecipitate cryoprecipitate +/- platelets α angle < 53 MA < 50 platelets LY30 > 3% tranexamic acid
Table 1: TEG values and interpretation TEG Value Normal* Description Measures TEG-ACT (rapid) 80 - 140 sec “Activated clotting time” to initial fibrin formation clotting factors (extrinsic/intrinsic pathways) R time (conventional) 5.0 - 10.0 min “Reaction time” to initial fibrin formation clotting factors (intrinsic pathway) K time 1.0 - 3.0 min “Kinetic tim” for fibrin cross linkage to reach 20 mm clot strength fibrinogen, platelet number angle 53.0 - 72.0 degrees from baseline to slop of tracing that represents clot formation fibrinogen, platelet number MA 50.0 - 70.0 mm Maximum amplitude of tracing platelet function G value 5.3 - 12.4 dynes/cm2 Calculated of clot strength entire coagulation cascade LY 30 0 - 3% Clot lysis at 30 minutes following MA fibrinolysis 2: Suggested TEG-guided transfusion TEG Value Transfuse TEG-ACT > 140 FFP R time > 10 FFP K time > 3 cryoprecipitate α angle < 53 cryoprecipitate +/- platelets MA < 50 platelets LY30 > 3% tranexamic acid
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