Blood Component Therapy in Trauma and Surgical Bleeding

Immediate Hemorrhage Control and Resuscitation Strategy

• In patients with significant bleeding from trauma or surgery, immediately activate massive transfusion protocol with 1:1:1 ratio of RBC:FFP:platelets, administer tranexamic acid 1g IV within 3 hours of injury, and prioritize surgical hemorrhage control over laboratory-guided therapy 1, 2, 3
• Early hemorrhage control is paramount, using temporary hemostatic devices followed immediately by surgical or interventional radiological control 1, 2, 3
• Permissive hypotension during active bleeding, maintaining minimum acceptable preload without attempting to normalize blood pressure 1, 2, 3

Blood Component Administration Protocol

• Administer RBC in 1:1 ratio with FFP during active hemorrhage 1, 2, 3
• Administer FFP in 1:1 ratio with RBC during ongoing bleeding 1, 2, 3
• Use cryoprecipitate when fibrinogen is critically low, giving two pools empirically during massive transfusion until test results available 1, 2, 3, 7
• Maintain platelet count >50 × 10⁹/L during active bleeding, with higher targets in traumatic brain injury or multiple trauma 1, 2, 3, 8, 9

Tranexamic Acid Administration

• Give tranexamic acid 1g IV immediately in trauma patients, within 3 hours of injury to reduce mortality 1, 2, 3, 4

Laboratory and Point-of-Care Testing

• Use point-of-care testing to guide therapy once available, with viscoelastic testing recommended over traditional PT/APTT for real-time coagulation assessment 1, 2
• Key laboratory targets once bleeding controlled include fibrinogen >1.5 g/L, platelet count >50 × 10⁹/L, and INR <1.5 5, 6, 8, 9

Critical Pitfalls to Avoid

• Do not delay surgical hemorrhage control for laboratory results, delivering blood products empirically during active bleeding 1, 2, 3, 4
• Do not attempt to normalize blood pressure with crystalloids, using blood products for volume replacement during hemorrhage 1, 2, 3, 4
• Do not withhold tranexamic acid if within 3-hour window, as it must be given within 3 hours of injury to reduce mortality 1, 2, 3, 4

Temperature Management

• Maintain normothermia aggressively, applying measures to reduce heat loss and warm hypothermic patients 1, 2, 3, 9