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Research has shown that using higher ratios of fresh frozen plasma (FFP) and platelets to packed red blood cells (PRBCs) in the resuscitation of exsanguinating trauma patients improves survival; however, this effect may merely reflect survival bias (NEJM JW Emerg Med May 8 2009). In an effort to reduce this effect, researchers retrospectively measured mean infusion rates of blood products (total volume divided by time in emergency department [ED] or operating room) in 151 trauma patients with severe hemorrhage who received more than 10 units of PRBCs within 24 hours of ED arrival and underwent emergent damage control surgery.
The overall survival rate at 180 minutes was 80%. Nonsurvivors had a higher mean Injury Severity Score than survivors…