Efficacy of platelets collected by semi-continuous flow centrifugation (Haemonetics Model 30)

Area of Science:

• Hematology
• Transfusion Medicine
• Biomedical Engineering

Background:

• Platelet collection methods are crucial for ensuring transfusion efficacy.
• Assessing the viability and function of collected platelets is essential for patient outcomes.
• Semi-continuous flow centrifugation offers a potential alternative for platelet harvesting.

Purpose of the Study:

• To evaluate the viability and function of platelets collected via semi-continuous flow centrifugation (Haemonetics Model 30).
• To compare the efficacy of platelets collected by this method versus traditional plateletpheresis.
• To determine the in vitro and in vivo function of collected platelets.

Main Methods:

• Platelet viability was assessed using radiochromium labeling in autologous and donor settings.
• Platelet recovery and survival rates were measured post-infusion.
• In vitro platelet function was tested using aggregating agents.
• In vivo function was correlated with bleeding time and post-transfusion platelet counts.

Main Results:

• Autologous platelets collected by the Haemonetics Model 30 showed comparable survival rates to normal values.
• Donor platelets collected by the centrifuge demonstrated similar viability and survival to those obtained by multiple bag plateletpheresis.
• In vitro platelet function remained normal within 60 minutes of collection.
• A positive correlation between post-transfusion platelet count and maintained in vivo function was observed.

Conclusions:

• The Haemonetics Model 30 semi-continuous flow centrifuge effectively collects viable platelets.
• Platelet function, both in vitro and in vivo, is maintained following collection with this device.
• This method presents a viable alternative to traditional plateletpheresis for clinical use.