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ICU TopicsResuscitation

ICU · Resuscitation

Massive transfusion and coagulopathy

Also known as Massive haemorrhage protocol (MHP) · Damage control resuscitation (DCR) · Trauma-induced coagulopathy (TIC) · 1:1:1 transfusion ratio · Viscoelastic testing (TEG/ROTEM) · Tranexamic acid (TXA)

Damage control resuscitation: early haemorrhage control, permissive hypotension (SBP 80-90, MAP 50-60; MAP 80+ in severe TBI), balanced ratios 1:1:1 to 1:1:2, TXA within 3h, fibrinogen above 1.5, platelets above 50 (100 if bleeding/TBI), ionised calcium in range, Hb 70-90. PROPPR, CRASH-2/3, WOMAN, HALT-IT, ITACTIC and the European guideline.

high17 referencesUpdated 13 Oct 202610 min readSource-verified · Oct 2026

Checked against its sources on 13 Oct 2026

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Red flags

  • The lethal triad: hypothermia + acidosis + coagulopathy — each worsens the others. Prevent ALL three aggressively
  • TXA within 3 hours of injury — after 3h bleeding death increases (RR 1.44); benefit falls 10% per 15 min of delay
  • Permissive hypotension SBP 80-90 (MAP 50-60) until bleeding stops — except severe TBI, where MAP 80+ is maintained (European guideline)
  • Viscoelastic-guided protocols did not beat conventional-test-guided protocols overall in ITACTIC — know the evidence boundary
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Practise this topic8 MCQs with explanations

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CICMFFICMEDIC

Red flags

  • The lethal triad: hypothermia + acidosis + coagulopathy — each worsens the others. Prevent ALL three aggressively
  • TXA within 3 hours of injury — after 3h bleeding death increases (RR 1.44); benefit falls 10% per 15 min of delay
  • Permissive hypotension SBP 80-90 (MAP 50-60) until bleeding stops — except severe TBI, where MAP 80+ is maintained (European guideline)
  • Viscoelastic-guided protocols did not beat conventional-test-guided protocols overall in ITACTIC — know the evidence boundary
In one line

Damage control resuscitation (DCR): early definitive haemorrhage control + hypotensive resuscitation (SBP 80-90, MAP 50-60; MAP 80+ in severe TBI) + early balanced blood products + haemostatic agents. PROPPR trial: 1:1:1 (RBC:plasma:platelets) vs 1:1:2 — no mortality difference, but 1:1:1 achieved earlier haemostasis (86% vs 78%) and fewer exsanguination deaths at 24h (9.2% vs 14.6%). TXA 1 g IV (CRASH-2: reduces all-cause and bleeding death; benefit falls with every 15 min of delay, and beyond 3 h bleeding death increases). Lethal triad: hypothermia + acidosis + coagulopathy — high mortality, prevent all three. Viscoelastic testing (TEG/ROTEM): guides component therapy; predicts massive transfusion earlier than conventional tests. Calcium: citrate in transfused products binds ionised calcium — hypocalcaemia predicts lower survival, so monitor and replace.

[3] [17] [5] [4] [6] [13] [2] [12]

Meet the patient

A 28-year-old motorcyclist arrives in the trauma bay: BP 76/40, HR 128, distended abdomen, FAST positive. He is cold at 35.2C, his pH is 7.18, his INR is 1.8. Forty-five minutes since injury. The three things that will save him are already decided: tranexamic acid now (1 g over 10 min then 1 g over 8 h, within 3 h of injury), blood in balanced ratios between 1:1:1 and 1:1:2, and early definitive haemorrhage control.[4][6][1][3]

The lethal triad is already established — hypothermia, acidosis, coagulopathy — and it carries a high mortality rate. The window is the first hour: warm toward normothermia (core 36-37C), give TXA within 3 hours (protocols should consider the first dose en route, without awaiting viscoelastic results), transfuse in balanced ratios, and get to damage control surgery in deep haemorrhagic shock with ongoing bleeding and coagulopathy. Everything else is a refinement.[3][13][17]

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References17ShowHide
  1. [1]Meneses E, Boneva D, McKenney M, et al. Massive transfusion protocol in adult trauma population Am J Emerg Med, 2020.PMID 33071074
  2. [2]Brill JB, Brenner M, Duchesne J, et al. The Role of TEG and ROTEM in Damage Control Resuscitation Shock, 2021.PMID 33769424
  3. [3]LaGrone LN, Stein D, Cribari C, et al. American Association for the Surgery of Trauma/American College of Surgeons Committee on Trauma: Clinical protocol for damage-control resuscitation for the adult trauma patient J Trauma Acute Care Surg, 2024.PMID 37697470
  4. [4]Shakur H, Roberts I, Bautista R, et al. Effects of tranexamic acid on death, vascular occlusive events, and blood transfusion in trauma patients with significant haemorrhage (CRASH-2): a randomised, placebo-controlled trial Lancet, 2010.PMID 20554319
  5. [5]Holcomb JB, Tilley BC, Baraniuk S, et al. Transfusion of plasma, platelets, and red blood cells in a 1:1:1 vs a 1:1:2 ratio and mortality in patients with severe trauma: the PROPPR randomized clinical trial JAMA, 2015.PMID 25647203
  6. [6]Roberts I, Shakur H, Afolabi A, et al. The importance of early treatment with tranexamic acid in bleeding trauma patients: an exploratory analysis of the CRASH-2 randomised controlled trial Lancet, 2011.PMID 21439633
  7. [7]CRASH-3 trial collaborators. Effects of tranexamic acid on death, disability, vascular occlusive events and other morbidities in patients with acute traumatic brain injury (CRASH-3): a randomised, placebo-controlled trial Lancet, 2019.PMID 31623894
  8. [8]WOMAN Trial Collaborators. Effect of early tranexamic acid administration on mortality, hysterectomy, and other morbidities in women with post-partum haemorrhage (WOMAN): an international, randomised, double-blind, placebo-controlled trial Lancet, 2017.PMID 28456509
  9. [9]HALT-IT Trial Collaborators. Effects of a high-dose 24-h infusion of tranexamic acid on death and thromboembolic events in patients with acute gastrointestinal bleeding (HALT-IT): an international randomised, double-blind, placebo-controlled trial Lancet, 2020.PMID 32563378
  10. [10]Gayet-Ageron A, Prieto-Merino D, Ker K, et al. Effect of treatment delay on the effectiveness and safety of antifibrinolytics in acute severe haemorrhage: a meta-analysis of individual patient-level data from 40138 bleeding patients Lancet, 2018.PMID 29126600
  11. [11]Levy JH, Welsby I, Goodnough LT Fibrinogen as a therapeutic target for bleeding: a review of critical levels and replacement therapy Transfusion, 2014.PMID 24117955
  12. [12]Moore HB, Tessmer MT, Moore EE, et al. Forgot calcium? Admission ionized-calcium in two civilian randomized controlled trials of prehospital plasma for traumatic hemorrhagic shock J Trauma Acute Care Surg, 2020.PMID 32317575
  13. [13]Sihler KC, Napolitano LM Complications of massive transfusion Chest, 2010.PMID 20051407
  14. [14]Baksaas-Aasen K, Gall LS, Stensballe J, et al. Viscoelastic haemostatic assay augmented protocols for major trauma haemorrhage (ITACTIC): a randomized, controlled trial Intensive Care Med, 2021.PMID 33048195
  15. [15]Smith HM, Farrow SJ, Ackerman JD, et al. Cardiac arrests associated with hyperkalemia during red blood cell transfusion: a case series Anesth Analg, 2008.PMID 18349174
  16. [16]McNamara H, Mallaiah S Managing coagulopathy following PPH Best Pract Res Clin Obstet Gynaecol, 2019.PMID 31151887
  17. [17]Spahn DR, Bouillon B, Cerny V, et al. The European guideline on management of major bleeding and coagulopathy following trauma: fifth edition Crit Care, 2019.PMID 30917843

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