thromboelastography
Pronunciation: throm-bo-e-las-TOG-ra-fee
Also written as: TEG — thromboelastography
Point-of-care test measuring viscoelastic properties of blood clot formation and breakdown in real time.
Full Definition
A diagnostic technique that provides comprehensive assessment of hemostatic function by measuring the viscoelastic properties of blood as it clots. The test evaluates clot formation time, clot strength, and fibrinolysis, providing parameters including R-time, K-time, alpha angle, maximum amplitude, and LY30. In cardiac surgery, TEG guides transfusion therapy and helps distinguish between surgical bleeding and coagulopathy. Results are displayed as characteristic tracings that experienced clinicians interpret to guide hemostatic management.
Usage
Usage note: Commonly abbreviated as TEG; distinguish from ROTEM, which uses different methodology but serves similar clinical purposes.
In Context
- "Thromboelastography revealed prolonged R-time and decreased maximum amplitude, suggesting both factor deficiency and platelet dysfunction." — Laboratory report
- "The anesthesiologist ordered thromboelastography to guide blood product administration during the complex aortic procedure." — Operative report