What Is Freeze-Dried Plasma?
Freeze-dried plasma (FDP), also known as lyophilized plasma, is plasma that has been dehydrated into a powder form for long-term storage at room temperature. When needed, it is reconstituted with sterile water and administered intravenously. This technology eliminates the need for refrigeration and thawing, making plasma transfusion feasible in prehospital and austere environments where cold chain storage is impractical.
Advantages Over Thawed Plasma
Traditional fresh frozen plasma (FFP) must be stored at -18 degrees Celsius and requires 20 to 30 minutes to thaw before use. Once thawed, it has a limited shelf life of 24 hours to 5 days depending on the product. Freeze-dried plasma solves these logistical challenges:
- Room temperature storage: No refrigeration or freezer required
- Long shelf life: 2 to 3 years at room temperature
- Rapid preparation: Reconstituted in 3 to 6 minutes with sterile water
- Lightweight and compact: Easy to carry in jump bags or tactical medical kits
- Retained clotting factors: Maintains most coagulation factor activity after reconstitution
Clinical Applications
FDP is indicated in the prehospital setting for patients with severe hemorrhage who need coagulation support. It is used in:
- Traumatic hemorrhage with suspected coagulopathy
- Massive transfusion protocols as a plasma component
- Burns with associated hemorrhage
- Postpartum hemorrhage
- Warfarin-associated bleeding (as a bridge until PCC or vitamin K takes effect)
Reconstitution and Administration
Each unit typically reconstitutes into approximately 200 to 250 mL of plasma. Use the sterile water provided with the kit. Follow the manufacturer's specific reconstitution instructions. Gently swirl the vial; do not shake vigorously, as this can denature clotting factors. Administer through a standard blood administration set with an inline filter. The recommended infusion rate depends on the clinical urgency; in life-threatening hemorrhage, infuse as rapidly as possible.
Considerations for EMS
Most currently available FDP products are derived from a single donor, and many are type AB (universal plasma donor). However, some products may carry ABO-specific antibodies. Follow your agency's protocol for blood type considerations. Monitor for transfusion reactions and document the lot number, reconstitution time, infusion start time, and volume administered. FDP is more expensive per unit than traditional FFP, but the reduced waste (longer shelf life, no spoilage from storage failures) can offset the cost difference.