Preoperative point-of-care platelet function testing in cardiac surgery

Area of Science:

• Cardiothoracic Surgery
• Transfusion Medicine
• Point-of-Care Testing

Background:

• Blood product transfusion is common in coronary artery bypass graft (CABG) surgery.
• Optimizing transfusion strategies is crucial for patient outcomes and resource management.

Purpose of the Study:

• To evaluate if preoperative platelet function testing (PFT) integrated into a transfusion algorithm reduces blood product usage during CABG surgery.
• To assess the impact of different PFT methods on transfusion requirements.

Main Methods:

• Prospective, randomized, controlled trial involving 249 patients undergoing CABG.
• Patients were randomized to preoperative PFT using Multiple Electrode Aggregometry (MEA) or TEG PlateletMapping (PM), or a control group.
• A standardized transfusion algorithm guided post-bypass bleeding management.

Main Results:

• Significant reduction in overall blood product transfusion in both PFT groups (MEA and PM) compared to the control group (p=0.02).
• Reduced red blood cell and fresh frozen plasma transfusions were observed in PFT groups versus control (p=0.006 and p<0.001, respectively).
• No significant increase in platelet transfusion was noted; cost savings were observed, especially in patients on ADP-receptor antagonists.

Conclusions:

• Preoperative PFT, as part of a point-of-care testing-based transfusion algorithm, effectively reduces blood transfusion in CABG surgery.
• Potential for significant cost savings exists, particularly for patients who have recently used adenosine diphosphate (ADP)-receptor antagonists.