Evaluation of a BED-SIDE platelet function assay: performance and clinical utility.

Area of Science:

• Hematology
• Clinical Diagnostics
• Cardiovascular Medicine

Background:

• Platelets are crucial for vascular integrity and hemostasis.
• Platelet count and function are often compromised in acute care settings like percutaneous coronary intervention and cardiopulmonary bypass.
• Current bedside assays for platelet parameters have limited utility.

Purpose of the Study:

• To develop and validate a practical, rapid, and user-friendly whole blood platelet function assay for bedside use.
• To address the limitations of existing platelet function assays in acute care settings.
• To enable timely monitoring of platelet function and response to antiplatelet therapy.

Main Methods:

• A novel whole blood platelet function assay using lyophilized agonists in collection tubes.
• Activation of platelets with agonists (ADP, collagen) followed by counting of non-aggregated platelets.
• Correlation of results with traditional turbidometric aggregometry.
• Clinical validation in patients undergoing cardiac intervention and receiving antiplatelet agents.

Main Results:

• Assay provides results within four minutes.
• Demonstrated good correlation with established aggregometry methods (ADP: r=0.91, collagen: r=0.88).
• Showed utility in monitoring patient response to antiplatelet therapies in clinical settings.
• Provides a full hematology profile, including platelet count.

Conclusions:

• The novel bedside assay is suitable for clinical environments requiring rapid turnaround.
• This assay enhances the ability to make informed transfusion and interventional decisions.
• It offers a practical solution for assessing platelet function and count in critically ill patients.