Thromboelastography: Coagulation Beyond INR and aPTT
Dr. Dhanesh Sukumaran, Critical Care physician in Saveetha Medical College And Hospital, shared a very insightful post on Thromboelastography on LinkedIn:
”Understanding Coagulation Beyond INR and aPTT – The Power of TEG
In the ICU and OR, we often face complex coagulopathies—massive transfusions, sepsis-induced DIC, liver failure, trauma. Traditional labs like INR, aPTT, and platelet count tell only part of the story.
Enter Thromboelastography (TEG) – a dynamic, real-time assessment of the entire clotting cascade, from clot formation to lysis.
What makes TEG valuable?
- Rapid bedside results
- Guides goal-directed transfusion (PRBC, FFP, platelets, cryo, antifibrinolytics)
- Reduces unnecessary blood product use
- Especially useful in trauma, cardiac surgery, liver transplantation, and sepsis-related coagulopathy
Key parameters:
• R-time: Time to clot initiation (think clotting factors)
• K-time and Alpha angle: Speed of clot formation (fibrinogen function)
• MA (Maximum Amplitude): Strength of the clot (platelet function)
• LY30: Clot stability and fibrinolysis
TEG doesn’t replace conventional tests but complements them—giving us the “big picture” in real time.
If you’re not using TEG in your critical care or perioperative practice yet, it’s time to explore its impact.”
Find more comprehensive insights on coagulation in Hemostasis Today.
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