Blood, Belmonts, and the Back of the Rig: A Guide to Mass Transfusion
“Activate MTP!” That phrase has become one of the most defining moments of modern emergency and trauma nursing. We’ve come a long way from the days of blindly hanging fluids and praying for a stable pressure. Today, we have coordinated massive transfusion protocols (MTPs) , Belmont rapid infusers , and—thanks to some bold EMS systems— prehospital blood products already dripping before the stretcher even hits the door. But with new tools and protocols comes new responsibility—and a need to stay sharp on the why , not just the how . ๐ฉธ What Is a Massive Transfusion Protocol? Massive transfusion is usually defined as: >10 units of PRBCs within 24 hours , or >4 units in 1 hour with ongoing need , or Replacement of >50% of blood volume in 3 hours But practically? If your trauma team’s activating MTP, you know you're in the thick of it. MTPs are designed to: Restore oxygen-carrying capacity and coagulation functi...