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A flow dynamic technique used to assess global haemostasis
K M Muga1, L G Melton, D A Gabriel
1Center for Thrombosis and Hemostasis, UNC, School of Medicine, Chapel Hill 27599, USA.
Summary
A novel hollow fiber flow device accurately assesses global hemostasis in under 90 minutes. This single test distinguishes clotting defects from platelet dysfunction, improving diagnosis for bleeding disorders.
Area of Science:
- Hematology
- Biomedical Engineering
Background:
- Assessing global hemostasis is crucial for diagnosing bleeding disorders.
- Current clinical evaluations often face challenges like sample dilution, prolonged completion times, and anticoagulant artifacts.
Purpose of the Study:
- To introduce and validate a novel hollow fiber flow device for rapid and accurate assessment of global hemostasis.
- To demonstrate the device's ability to differentiate coagulation defects from platelet dysfunction.
Main Methods:
- Utilized a hollow fiber flow device to perfuse non-anticoagulated whole blood and monitor pressure changes.
- Analyzed blood samples from normal volunteers, patients with factor VIII deficiency, Glanzmann's thrombasthenia, and those on Coumadin therapy.
Main Results:
- The device accurately calculated in vitro bleeding time (IVBT) and whole blood clotting time (WBCT) in under 90 minutes.
- Successfully distinguished between coagulation defects and platelet dysfunction.
- Detailed hemostatic abnormalities in both congenital and therapeutic conditions.
Conclusions:
- The hollow fiber flow device offers a significant advancement in hemostasis testing, overcoming limitations of traditional methods.
- This single, rapid test provides a reliable means to assess global hemostasis and guide diagnosis of bleeding disorders.