====== Blood component therapy ====== ===== Massive transfusions ===== Definition: [[replacement]] of > 1 blood volume (in average adult ≈ 20 U) in < 24 hrs for adults, or > 2 × circulating blood volume in peds, may cause dilution of effective platelets and [[coagulation factors]], which requires [[platelet transfusion]] and [[fresh frozen plasma]] (FFP). When operating on a pediatric patient, you can usually safely replace up to 1.5 × the circulating blood volume before problems with [[coagulopathy]] ensue. ---- Blood component therapy required for massive [[transfusion]]s: [[Red blood cell]] therapy