II. Indications
-
Massive Hemorrhage related transfusions
- May assist in determining ratio of Red Blood Cell Transfusions to Fresh Frozen Plasma and Platelet Transfusion
III. Mechanism
- Whole blood assay of a blood's ability to clot based on viscoelastic blood properties
- As blood clot forms, analyzer detects resistance over time
- Analyzer plots measurized resistance over time in form of a graph
- Typically graph is plotted over a 20-30 minute period until maximal clot firmness
IV. Interpretation
- Abnormal Clotting Time
- In early trauma Coagulopathy, often related to plasma related deficiencies
- In later trauma Coagulopathy, Fibrinogen deficiency may be treated with Cryoprecipitate or Fibrinogen
- Poor maximal clot firmness (poor maximal amplitude)
- Consider Platelet Transfusion
- Hyperfibrinolysis
- Typically assumed as a part of early trauma Coagulopathy, and Tranexamic Acid is given empirically
- May appear as abnormal clot breakdown over time (typically subtle in graph)
V. Labs: Bedside Viscoelastic Assay
- Thromboelastography (TEG)
- Rotational Thromboelastography (ROTEM)
VI. Resources
- Shaydakov, Sigmon, Blebea (2019) Stat Pearls
VII. References
- Swaminathan and Hicks in Herbert (2020) EM:Rap 20(7): 1-2
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Related Studies
| Definition (MSH) | Substances that display the physical properties of ELASTICITY and VISCOSITY. The dual-nature of these substances causes them to resist applied forces in a time-dependent manner. |
| Concepts | Chemical Viewed Functionally (T120) |
| MSH | D055682 |
| English | Viscoelastic Substances, Substances, Viscoelastic |
| Spanish | Sustancias Viscoelásticas |
| French | Substances viscoélastiques, Matières visco-élastiques, Matières viscoélastiques, Substances visco-élastiques |
| Italian | Sostanze viscoelastiche |
| Russian | ВЯЗКОЭЛАСТИЧНЫЕ ВЕЩЕСТВА, VIAZKOELASTICHNYE VESHCHESTVA, ВЯЗКОУПРУГИЕ ВЕЩЕСТВА, VIAZKOUPRUGIE VESHCHESTVA |
| German | Viskoelastische Substanzen |
| Portuguese | Substâncias Viscoelásticas, Agentes Viscoelásticos |
| Swedish | Viskoelastiska substanser |
| Czech | viskoelastické látky |
| Polish | Substancje wiskoelastyczne, Roztwory wiskoelastyczne, Pianki wiskoelastyczne |
| Japanese | 粘弾性溶液, 粘弾性物質, 粘弾性フォーム |
Ontology: Thromboelastography panel (C3258239)
| Concepts | Laboratory Procedure (T059) |
| LNC | LP133932-6, MTHU041635 |
| English | Thromboelastography panel |
