What does R time/CT measure in TEG/ROTEM?

R time (TEG) or CT (ROTEM) measures time to initial fibrin formation (clotting factor activity); prolonged R/CT indicates factor deficiency (treat with FFP 10-15 mL/kg) or anticoagulant effect; normal TEG R: 5-10 min; ROTEM INTEM CT: 100-240s.

What does MA/MCF represent in TEG/ROTEM?

Maximum amplitude (TEG) or maximum clot firmness (ROTEM) measures clot strength from platelet-fibrin interaction; low MA/MCF from low platelets: transfuse; low MA/MCF with normal platelets: cryoprecipitate or fibrinogen for fibrinogen deficiency.

How does heparinase ROTEM detect heparin effect?

Heparinase ROTEM (HEPTEM) removes heparin effect; comparing INTEM (with heparin) vs HEPTEM: if HEPTEM CT normalizes, heparin is causing prolonged CT; if both prolonged = factor deficiency; guides protamine vs FFP.

What LY30 value indicates hyperfibrinolysis?

LY30 >3% (TEG) indicates significant fibrinolysis; LY30 >8% is severe; treat with tranexamic acid 1g IV; hyperfibrinolysis is common in trauma, liver failure, and cardiac surgery; ROTEM uses LI30 and ML (maximum lysis).

What is the TEG-guided massive transfusion protocol?

TEG-guided: administer blood products targeting specific TEG parameters rather than empiric 1:1:1 ratio; associated with lower plasma and platelet use without increased mortality; reduces transfusion-associated complications in trauma.

Thromboelastography (TEG/ROTEM) Interpretation and Blood Product Guide

Interprets TEG and ROTEM parameters (R/CT, K/CFT, angle/alpha, MA/MCF, LY30/LI30) to identify coagulation defects and calculates FFP, cryoprecipitate, and platelet dosing for viscoelastic-guided resuscitation.

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Frequently Asked Questions

What does R time/CT measure in TEG/ROTEM?

What does MA/MCF represent in TEG/ROTEM?

How does heparinase ROTEM detect heparin effect?

What LY30 value indicates hyperfibrinolysis?

What is the TEG-guided massive transfusion protocol?