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Resonant Acoustic Rheometry for Real Time Assessment of Plasma Coagulation in Bleeding Patients
Cheri Deng1, Weiping Li1, Connor Bunch2
1University of Michigan.
Research Square
|November 1, 2024
Summary
Resonant acoustic rheometry (RAR) can assess plasma coagulation in bleeding patients. This bedside test accurately predicts the need for blood product transfusions, improving hemostasis management.
Area of Science:
- Biomedical Engineering
- Hematology
- Clinical Diagnostics
Background:
- Life-threatening hemorrhage requires rapid hemostasis assessment for effective treatment.
- Current methods for phenotyping coagulation disorders may lack speed or sensitivity in critical settings.
- Accurate hemostasis profiling is crucial for guiding blood component and hemostatic adjunct therapy.
Purpose of the Study:
- To evaluate resonant acoustic rheometry (RAR) as a novel method for bedside hemostasis phenotyping.
- To assess the correlation between RAR parameters and established coagulation assays (TEG).
- To determine the utility of RAR in predicting transfusion needs in bleeding patients.
Main Methods:
- Resonant acoustic rheometry (RAR) was used to measure plasma viscoelastic properties.
- RAR measurements were compared with clinical coagulation assays and whole blood thromboelastography (TEG).
- A classifier was trained on RAR data to predict transfusion of fresh frozen plasma and cryoprecipitate.
Main Results:
- RAR effectively captured dynamic plasma coagulation characteristics, dependent on activation.
- RAR parameters showed significant correlation with TEG reaction time and functional fibrinogen.
- A classifier based on RAR accurately predicted the requirement for specific blood product transfusions.
Conclusions:
- Resonant acoustic rheometry (RAR) shows promise as a rapid, bedside tool for hemostasis assessment.
- RAR can guide transfusion decisions in bleeding patients, potentially improving patient outcomes.
- This technique offers a new approach to managing coagulofibrinolytic disorders in critical care settings.
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