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The Choice between Plasma-Based Common Coagulation Tests and Cell-Based Viscoelastic Tests in Monitoring Hemostatic
Connor M Bunch1, Margaret Berquist2, Aida Ansari2
1Department of Emergency Medicine, Henry Ford Hospital, Detroit, Michigan.
Seminars in Thrombosis and Hemostasis
|September 29, 2022
Summary
Viscoelastic tests (VETs) offer a more comprehensive assessment of blood clotting than traditional coagulation tests (CCTs). Both VETs and CCTs have roles in guiding therapy for bleeding patients.
Area of Science:
- Hematology
- Hemostasis and Thrombosis
Background:
- Traditional coagulation tests (CCTs) like PT and PTT have limitations in assessing acute bleeding conditions due to measuring only a small portion of clot formation.
- Viscoelastic tests (VETs) have gained prominence for evaluating hemostatic competence in bleeding patients across various clinical settings.
Approach:
- This review examines the comparative indications for CCTs and VETs in managing bleeding patients.
- It highlights the evolving applications of VETs beyond their traditional use in liver failure, cardiac surgery, and trauma.
Key Points:
- CCTs provide limited information on clot kinetics, making them less suitable for rapid assessment in acute surgical and medical scenarios.
- VETs offer a more dynamic and complete picture of clot formation and lysis, aiding in targeted therapy.
- Certain medical indications still necessitate the use of CCTs, indicating a complementary role for both test types.
Conclusions:
- The selection between CCTs and VETs for guiding blood component or hemostatic adjunctive therapy depends on the specific clinical context.
- Integrating insights from both CCTs and VETs is often crucial for optimal patient management in bleeding disorders.

