Is one-size-fits-all strategy adequate for platelet storage?

Area of Science:

• Transfusion Medicine
• Hematology
• Biotechnology

Background:

• Platelet suspensions (PSs) are typically stored at room temperature.
• Emerging evidence suggests 4°C storage improves hemostatic properties.
• This study investigates viability and thrombin generation of PSs at different temperatures.

Purpose of the Study:

• To compare the viability and thrombin generation capacity of platelet suspensions stored at 4°C versus 22°C.
• To evaluate the impact of storage temperature on platelet function.

Main Methods:

• Apheresis-derived platelets (ADPs) and random platelet suspensions (RPSs) were stored at 4°C or 22°C for 48 hours.
• Viability was assessed using flow cytometry.
• Thrombin generation capacity was measured using thrombin generation tests.

Main Results:

• Platelet viability was not significantly different between storage temperatures (4°C vs. 22°C).
• Platelets stored at 4°C exhibited significantly higher peak thrombin levels.
• Storage at 4°C resulted in a significantly shorter time to thrombin generation and peak levels.

Conclusions:

• Refrigerated platelet suspensions (4°C) demonstrate enhanced and accelerated thrombin generation.
• Superior hemostatic properties of 4°C stored platelets suggest potential benefits for transfusion strategies.
• Tailoring storage temperatures for specific transfusion needs may improve outcomes, particularly for bleeding trauma casualties.