In major trauma, crystalloids are not enough. Patients exsanguinate, clotting cascades fail, and every minute counts. For rookies, knowing which blood product to give, and when, is the cornerstone of modern trauma resuscitation.
Why Blood Products Matter
- Trauma deaths are often from hemorrhage within the first 24 hours.
- Excess crystalloids dilute clotting factors and worsen acidosis.
- Balanced damage control resuscitation (DCR) with blood products improves survival.
Step 1: Recognize Hemorrhagic Shock
- Tachycardia, hypotension, cool clammy skin.
- Narrow pulse pressure, altered mental status, poor perfusion.
- Suspected major bleeding (chest, abdomen, pelvis, extremities).
- Do not wait for Hb — early labs can be falsely normal.
Step 2: Massive Transfusion Protocol (MTP)
- Activated for patients with life-threatening hemorrhage.
- Goal: rapid, balanced delivery of PRBCs, plasma, platelets.
- Typical ratio: 1:1:1 (PRBC : FFP : Platelets).
- Early activation saves lives.
Step 3: Blood Product Breakdown
Packed Red Blood Cells (PRBCs)
- Restores oxygen-carrying capacity.
- First-line product in exsanguination.
- Target Hb usually >7 g/dL (higher in ongoing shock, TBI).
Fresh Frozen Plasma (FFP)
- Replaces clotting factors.
- Given early in trauma to prevent dilutional coagulopathy.
- 15 mL/kg (≈4 units in adults) for initial dose.
Platelets
- Needed for primary clot formation.
- Keep platelet count >50,000 in active bleeding.
- In severe TBI/cranial bleeding, target >100,000.
Cryoprecipitate / Fibrinogen Concentrate
- High fibrinogen content.
- Use if fibrinogen <150 mg/dL or severe DIC.
Tranexamic Acid (TXA)
- 1 g IV over 10 min, then 1 g over 8 hrs.
- Give within 3 hours of injury (best within 1 hour).
- Reduces mortality in bleeding trauma patients (CRASH-2 trial).
Step 4: Special Situations
- Head trauma: early platelets + TXA if bleeding risk.
- Anticoagulant use: give reversal (PCC, vitamin K, idarucizumab, andexanet if available).
- Pediatrics: weight-based dosing (10–20 mL/kg PRBC).
- OB hemorrhage: same principles, but fibrinogen falls quickly—cryoprecipitate early.
Step 5: Stop the Bleeding
- Blood products buy time—definitive control = surgery or interventional radiology.
- Don’t forget calcium replacement (citrate in blood binds Ca²⁺ → hypocalcemia).
- Monitor for triad of death: acidosis, hypothermia, coagulopathy. Warm fluids and patient.
Common Rookie Mistakes
- Delaying MTP activation while “waiting for labs.”
- Giving liter after liter of crystalloids before blood.
- Forgetting plasma/platelets (PRBC-only resuscitation worsens coagulopathy).
- Neglecting calcium replacement during transfusion.
- Not warming blood → hypothermia worsens coagulopathy.
Rookie Pearls
- 1:1:1 resuscitation is the modern standard.
- TXA early in trauma saves lives—order it with the first blood products.
- Always check ionized calcium—replace aggressively if low.
- Warm the patient and the fluids—hypothermia kills clots.
- Think of blood products as drugs: dose, timing, and ratio matter.
Take-Home Message
In trauma resuscitation, blood is the fluid of choice. For rookies:
- Recognize hemorrhagic shock early.
- Activate MTP without delay.
- Use balanced resuscitation (PRBC, FFP, platelets).
- Add TXA and calcium.
- Control bleeding surgically or radiologically.
Every minute saved in giving the right blood product can mean the difference between life and death.
Leave a Reply