Beneficial effect of brief pre-transfusion incubation of platelets at 37 degrees C

Area of Science:

• Hematology
• Transfusion Medicine
• Pediatric Oncology

Background:

• Platelet transfusions are crucial for managing thrombocytopenia in pediatric patients, often resulting from chemotherapy or aplastic anemia.
• Standard storage conditions for platelet concentrates may impact their post-transfusion efficacy.
• Optimizing platelet storage and preparation is essential to maximize therapeutic benefit.

Purpose of the Study:

• To evaluate the impact of brief warming on the efficacy of stored platelet concentrates in pediatric patients.
• To assess changes in platelet morphology and corrected platelet count increments (CCIs) following transfusion of warmed versus unwarmed platelets.

Main Methods:

• A randomized study involving 15 pediatric patients with stable thrombocytopenia.
• Platelet concentrates were divided into two groups: one warmed to 37°C for 1 hour, the other kept at room temperature.
• Each patient received both a warmed and an unwarmed platelet bag, transfused sequentially.

Main Results:

• Warmed platelet bags exhibited significantly improved platelet morphology (p = 0.0001).
• Corrected platelet count increments (CCIs) were significantly higher at 1 hour (p = 0.014) and 2 hours (p = 0.006) post-transfusion for warmed platelets.
• The study demonstrated enhanced transfusion efficacy with the warming protocol.

Conclusions:

• Brief warming of room-temperature stored platelet concentrates to 37°C for 1 hour before transfusion improves their efficacy in pediatric patients.
• This warming method leads to a greater number of circulating platelets post-transfusion.
• Warming stored platelets is a simple yet effective strategy to enhance transfusion outcomes in children with thrombocytopenia.