Background: Viscoelastic tests (VETs) such as thromboelastography, rotational
thromboelastography, and the Sonoclot Analyzer assess the entire process of clot formation through
dissolution in real-time, and may provide additional therapeutic value to conventional laboratory
coagulation tests. With the ability to obtain rapid results and identify specific coagulopathies, VETs
has been examined in a variety of clinical scenarios, including cardiac surgery, trauma, obstetric
emergencies, and liver transplant.
Conclusion: This review provides a summary of clinical trials utilizing VETs in the aforementioned
clinical scenarios, and suggests that VETs have demonstrated a capability to identify
coagulopathies, utility in guiding algorithms to reduce the amount of transfusions, and a limited
ability to predict bleeding events or mortality.