Storage of platelet concentrates

Area of Science:

• Hematology
• Transfusion Medicine

Background:

• Thrombocytopenia, a condition of low platelet count, increases bleeding risk.
• Platelet transfusions are critical for managing bleeding in thrombocytopenic patients.
• Storage conditions for platelets may impact their therapeutic efficacy.

Purpose of the Study:

• To evaluate the therapeutic effectiveness of fresh platelets versus stored platelets.
• To assess the impact of storage temperature (4°C or 22°C) on platelet function.
• To determine the duration of the therapeutic effect of fresh platelet transfusions.

Main Methods:

• A cooperative clinical study was initiated by the American National Red Cross.
• Patients with thrombocytopenia received transfusions of fresh or stored platelets.
• Platelet counts and bleeding times were monitored post-transfusion.

Main Results:

• An inverse relationship was observed between platelet count and bleeding time in patients receiving fresh platelets.
• Fresh platelet transfusions led to an immediate rise in platelet count.
• This increase in platelet count was generally maintained for 4-8 hours before declining significantly.

Conclusions:

• Fresh platelets demonstrate therapeutic effectiveness in reducing bleeding time for thrombocytopenic patients.
• The hemostatic benefits of fresh platelets are transient, with a limited duration of action.
• Further research may be needed to optimize platelet storage and transfusion strategies.