Total Thrombus-Formation Analysis System (T-TAS): Clinical Application of Quantitative Analysis of Thrombus Formation
Koichi Kaikita1, Kazuya Hosokawa2, Jeffrey R Dahlen3
1Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
Insights
The Total Thrombus-Formation Analysis System (T-TAS) effectively monitors antithrombotic drug effects in cardiovascular patients. This tool aids in assessing treatment efficacy and predicting bleeding risks for better patient management.
Area of Science:
- Cardiovascular Medicine
- Hematology
- Medical Technology
Background:
- Antithrombotic agents are crucial for managing arterial and venous thrombosis in cardiovascular diseases.
- Current monitoring tools lack the ability to simultaneously assess diverse antithrombotic therapies like dual antiplatelet therapy and direct oral anticoagulants.
- Effective monitoring is essential for optimizing treatment and minimizing bleeding risks in patients with conditions such as coronary artery disease and atrial fibrillation.
Purpose of the Study:
- To evaluate the Total Thrombus-Formation Analysis System (T-TAS) as a tool for quantitatively analyzing whole blood thrombogenicity.
- To assess the utility of T-TAS in monitoring the antithrombotic effects of various agents, including antiplatelet therapies and anticoagulants.
- To determine if T-TAS can predict clinical outcomes such as periprocedural bleeding and thrombosis.
Main Methods:
- Utilized the Total Thrombus-Formation Analysis System (T-TAS), a microchip-based flow chamber, to evaluate whole blood thrombogenicity under simulated in vivo conditions.
- Analyzed thrombus formation using T-TAS PL and AR chips, focusing on the area under the flow pressure curve (AUC).
- Evaluated T-TAS performance in patients with coronary artery disease undergoing percutaneous coronary intervention, atrial fibrillation patients undergoing catheter ablation, and patients after total knee arthroplasty.
Main Results:
- The T-TAS PL chip AUC accurately reflects primary hemostasis and is sensitive to antiplatelet therapy effects in coronary artery disease patients.
- Low T-TAS PL AUC results significantly predict periprocedural bleeding events in patients undergoing percutaneous coronary intervention.
- The T-TAS AR chip AUC is effective in assessing direct oral anticoagulant and warfarin efficacy in atrial fibrillation patients and predicts bleeding and thrombosis risk.
Conclusions:
- The Total Thrombus-Formation Analysis System (T-TAS) provides a quantitative measure of whole blood thrombogenicity.
- T-TAS is a valuable tool for monitoring the efficacy of various antithrombotic agents, including dual antiplatelet therapy and direct oral anticoagulants.
- T-TAS serves as a useful index for evaluating the overall antithrombotic effect of combination therapies in diverse cardiovascular conditions and predicting clinical outcomes.
Abstract:
Various antithrombotic agents are clinically used to inhibit the cascade of arterial or venous thrombosis in cardiovascular diseases. Dual antiplatelet therapy with aspirin and P2Y12 inhibitors is prescribed in patients with coronary artery disease (CAD) undergoing percutaneous coronary intervention (PCI). Direct oral anticoagulants (DOACs) are widely used for the prevention or treatment of thromboembolism in patients with atrial fibrillation (AF) and venous thromboembolism. However, there has been no definitive tool to simultaneously monitor the antithrombotic effects of these drugs. The Total Thrombus-Formation Analysis System (T-TAS), a microchip-based flow chamber system that mimics in vivo conditions for evaluating whole blood thrombogenicity, was developed for the quantitative analysis of thrombus formation in whole blood specimens. The utility of T-TAS has been evaluated in CAD patients treated with antiplatelet therapies. The T-TAS PL chip area under the flow pressure curve (AUC) accurately assesses primary hemostasis and is sensitive to the therapeutic effects of various antiplatelet therapies. In addition, low AUC results are a significant predictor of periprocedural bleeding events in CAD patients undergoing PCI. The T-TAS AR chip AUC result is useful for assessing the efficacy of DOACs and warfarin in AF patients undergoing catheter ablation, and it is also a potential independent predictor of periprocedural bleeding events and avoidance of thrombosis in patients having undergone total knee arthroplasty. In conclusion, T-TAS is a useful index for evaluating the total antithrombotic effects of combination antithrombotic agents in patients with various cardiovascular diseases.
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