thromboelastography
Also written as: TEG — Thromboelastography
A point-of-care test that provides real-time assessment of whole blood coagulation dynamics and clot strength.
Full Definition
Thromboelastography (TEG) is a viscoelastic hemostatic assay that measures the entire coagulation process from initial clot formation through fibrinolysis. In cardiac surgery, TEG provides rapid assessment of coagulation status, helping guide targeted blood product therapy and reduce transfusion requirements. Key parameters include reaction time (R), clotting time (K), alpha angle, maximum amplitude (MA), and clot lysis. TEG is particularly valuable in managing complex coagulopathy after cardiopulmonary bypass when traditional laboratory tests may be insufficient or delayed.
Usage
Usage note: TEG and ROTEM are similar but distinct technologies with different parameter names.
In Context
- "TEG analysis guided fibrinogen replacement based on low maximum amplitude." — Anesthesia record
- "Thromboelastography revealed platelet dysfunction requiring desmopressin administration." — ICU progress note