1. Polytrauma (ATLS 11th Edition xABCDE Framework)

Quick Recap

Trauma System, Protocol 1/8. Built on the ATLS 11th Edition framework (2023) — note the updated xABCDE sequence (eXsanguinating hemorrhage control now precedes Airway), a significant change from the traditional ABCDE taught in older editions. Full hemorrhagic shock/damage control resuscitation detail cross-referenced to the Hypovolemic Shock protocol (Cardiovascular System).

1. The xABCDE Framework (ATLS 11th Edition)

Core principles: (1) treat the greatest threat to life first; (2) the lack of a definitive diagnosis should NOT delay urgent treatment; (3) an initial detailed history is NOT essential to begin evaluation/treatment of acute injuries. In a critically injured patient, a specific diagnosis or complete medical history is not necessary prior to initiating treatment and resuscitation.

x — eXsanguinating hemorrhage control (NEW in this edition, now performed FIRST, before airway): massive external hemorrhage (extremity/open wounds) can be the single greatest immediate threat to life — stop compressible, life-threatening external bleeding via direct pressure, wound packing, and/or tourniquet application BEFORE proceeding to airway management if such bleeding is present and visible on first contact.

A — Airway (with C-spine protection)

B — Breathing and ventilation

C — Circulation (with hemorrhage control — the internal/non-compressible counterpart to the initial "x" step)

D — Disability (neurologic status)

E — Exposure/environmental control

This is a systematic sequence for organizing assessment, not a rigid unwavering order — experienced clinicians use it as a cognitive framework, and in practice many elements are addressed simultaneously by a coordinated trauma team.

2. Preparation and Triage

Preparation: alert the full trauma team (general/trauma surgeon, emergency physician, orthopedic surgeon, critical care/anesthesia specialist, trained nursing/paramedic staff) before patient arrival; alert imaging, lab, blood bank, and OR; recheck airway cart, crash cart, suction, monitors, IV supplies, warmed fluids; universal precautions (mask, splash-resistant/lead gown, eye protection, gloves) for all team members.

Triage categories: immediate/red (compromised ABC needing immediate treatment); delayed/yellow (stable ABC, treatment can wait); minor/green ("walking wounded"); expectant/blue-gray (unsalvageable given available resources); deceased/black. START (Simple Triage And Rapid Treatment) is a validated rapid field triage tool for mass casualty scenarios.

3. x: eXsanguinating Hemorrhage Control

Tourniquet use, once nearly abandoned due to WWII-era amputation/rhabdomyolysis/neuropathy concerns, has been REHABILITATED with strong military and civilian evidence — associated with an 85% decrease in extremity hemorrhage deaths in modern military data, and now a standard component of trained responder equipment (Stop the Bleed program). Apply direct pressure and/or wound packing first; escalate to tourniquet for ongoing life-threatening compressible extremity hemorrhage not controlled by pressure alone. Tourniquets should be left in place until bleeding is surgically controlled, but total application time should be limited/tracked given the historical morbidity concerns — balance rapid hemorrhage control against prolonged ischemic time.

Junctional tourniquets (for hemorrhage at the groin/axilla/neck, where standard limb tourniquets cannot be applied) have systematic review evidence supporting effectiveness — consider where available for junctional zone hemorrhage.

4. Airway (A) — with Cervical Spine Protection

Assess for: obstruction (foreign body, facial fracture, bleeding); patency (may be compromised by diminished GCS, intoxication, swelling). A verbal patient without hoarseness/stridor usually has a patent airway, but this does NOT rule out FUTURE airway compromise — reassess continuously, not just once.

Intubation indications: GCS <=8, severe head/neck/chest trauma, oxygen desaturation, diminished mentation.

Cricothyroidotomy for failed/impossible orotracheal intubation: extend neck if possible, palpate cricothyroid membrane, 2-3cm vertical skin incision over the membrane, blunt dissection to the membrane, horizontal incision, bougie-guided placement of a 6F endotracheal tube.

Resuscitate shock BEFORE administering intubation medications where feasible — a specific ATLS 11th-edition emphasis: induction agents in a hypovolemic patient risk profound hemodynamic collapse; consider bolus-dose vasopressor support around RSI in hemorrhagic shock (see SCCM 2023 RSI guidelines referenced in Section 11).

5. Breathing (B)

Assess for: adequate chest wall excursion (not limited by mental status/rib fracture/pain); diminished/absent breath sounds (pneumothorax, hemothorax, pulmonary contusion); chest bruising/laceration; tracheal deviation (tension pneumothorax, neck hematoma). See the Chest Trauma protocol (this system) for full detail on thoracic injury management.

6. Circulation (C) — Resuscitation Targets

Hemorrhage is the most common cause of shock in trauma. Restoration to a "normal" blood pressure via aggressive fluid/blood administration may be DETRIMENTAL in uncontrolled hemorrhage — higher pressure can exacerbate ongoing bleeding.

Permissive hypotension (ATLS 11th edition-endorsed targets):

• Penetrating torso injury: improved mortality demonstrated with permissive hypotension (foundational evidence: Bickell et al., NEJM 1994)
• Blunt trauma (extrapolated, definitive blunt-trauma-specific data lacking): target SBP ~90 mmHg, using 100-200mL product/fluid boluses, until definitive hemorrhage control
• Higher target SBP 110 mmHg if head injury, spinal cord injury, or hypertension history is present — balancing bleeding-exacerbation risk against adequate cerebral/spinal cord perfusion pressure
• Practical bedside proxies for adequate perfusion balance: normal mentation and a palpable radial pulse of moderate volume
• Permissive hypotension is NOT a substitute for available hemostatic intervention, NOT appropriate to justify nonoperative management, NOT appropriate during unsupervised transfer, and NOT appropriate for blunt trauma with an identified bleeding source at a center with adequate hemorrhage-control resources — it is a bridge to definitive control, not an endpoint strategy

Excessive crystalloid is independently associated with worse outcomes: ED crystalloid resuscitation of 1.5L or more is associated with increased mortality in elderly AND non-elderly trauma patients; aggressive early crystalloid adversely affects outcomes in blunt trauma; >5L crystalloid in the first 24h has a demonstrated deleterious effect — minimize crystalloid, prioritize blood products, consistent with the damage control resuscitation principles in the Hypovolemic Shock protocol.

Assessing resuscitation response: continuous vital sign/perfusion monitoring; lactate and base deficit are valuable objective markers (base deficit correction timing correlates with reduced late mortality in polytrauma); urine output target 0.5 mL/kg/h (adult) as a perfusion adequacy marker, understanding these parameters change slowly and should not be relied upon for moment-to-moment decisions.

Access: IV catheter flow rate follows Poiseuille's Law — flow is proportional to radius^4 and inversely proportional to length, so short, wide-bore catheters flow fastest (favor large-bore peripheral over long central lines for rapid volume delivery). Intraosseous (IO) access as an alternative when IV access is difficult — common sites: humeral head, proximal tibia (placed 1-3cm distal to the tibial tuberosity, medial tibia) — do not insert IO distal to a fracture.

Emergency blood products: Rh-negative products preferred in patients who may bear children; Rh-positive acceptable in others, or when Rh-negative supply is exhausted (stabilization takes priority over Rh-sensitization concerns, which can be addressed within 72h post-stabilization).

Tranexamic acid: CRASH-2 trial established mortality benefit with EARLY administration in bleeding trauma patients — see prehospital TXA guidance for administration timing windows.

Massive transfusion: predefined MTP activation is associated with reduced organ failure/postinjury complications; time to delivery of the initial massive transfusion cooler independently impacts mortality — activate early, do not wait. Balanced 1:1:1 (plasma:platelet:RBC) resuscitation remains the standard target (see Hypovolemic Shock and Massive Transfusion protocols for full ratio/dosing detail).

Hemodynamically unstable pelvic fracture: preperitoneal pelvic packing represents a paradigm-shifting approach for rapid hemorrhage control, alongside pelvic binder application (see Pelvic Trauma protocol, this system).

7. Disability (D) — Neurologic Assessment

Rapid assessment AFTER circulation is addressed: level of consciousness (GCS), pupillary size/reaction, gross focal deficit. Consider hypoglycemia and drug/alcohol intoxication as contributors to altered consciousness, BUT assume ALL trauma patients with altered GCS have a brain injury until proven otherwise — do not anchor on an intoxication explanation prematurely. Avoid hypotension and hypoxia to prevent secondary brain injury (see Traumatic Brain Injury protocol, Neurology System, for full ICP/CPP management detail). A complete neurologic exam is deferred to the secondary survey.

8. Exposure and Environmental Control (E)

Completely undress the patient for thorough examination, INCLUDING THE BACK (log-roll technique with spine precautions). Maintain a warm environment to prevent hypothermia, which independently worsens coagulopathy (see the "lethal triad" concept in the Hypovolemic Shock protocol).

9. Adjuncts to the Primary Survey

Continuous ECG monitoring; pulse oximetry; urinary catheter (assess for urethral injury FIRST — perineal bruising, blood at meatus, high-riding prostate — before placement); gastric catheter (evacuate stomach, reduce aspiration risk; avoid nasogastric placement with suspected skull base fracture given facial injury — place orally instead in this scenario); arterial line for continuous BP monitoring if critically unstable (should not delay definitive care); plain chest and pelvic films for major blunt/penetrating trauma; eFAST (extended Focused Assessment with Sonography in Trauma) — examines four areas for free fluid (perihepatic/hepatorenal space, perisplenic, pelvis, pericardium) plus pneumothorax/hemothorax screening.

10. Secondary Survey (AMPLE History + Head-to-Toe Exam)

Begins once the primary survey is complete and life threats are addressed/resuscitation underway.

AMPLE history: Allergies, Medications, Past illness/pregnancy, Last meal, Events/environment of injury.

Systematic regional exam: head (lacerations, eye injuries, vision); maxillofacial (bony instability, facial nerve injury, mandible fracture); neck (spine tenderness, tracheal deviation, hematoma); chest (bruising, tenderness, breath sound changes, crepitus, uneven excursion); abdomen (bruising, tenderness, distension, evisceration); perineum (vaginal tears, rectal tone, blood at meatus, pregnancy test in women of childbearing age); limbs (distal pulses, capillary refill, crepitus, deformity); neurologic (detailed exam, spinal cord injury level if paralysis present).

Injuries specifically to actively screen for during secondary survey (easily missed on primary survey): pulmonary/myocardial contusion, aortic dissection/injury, traumatic diaphragmatic rupture, tracheobronchial disruption, esophageal disruption.

11. Tertiary Survey (ICU-Specific)

Patients admitted to the ICU have often NOT been fully assessed in the ED due to intoxication, head injury, or hemodynamic instability at the time of initial evaluation. ICU staff must perform a continual reassessment similar to the secondary survey as the patient stabilizes and becomes examinable — actively look for missed injuries (fractures especially) once the patient can participate in a more complete exam. This tertiary survey is a distinct, ICU-team responsibility, not an assumption that the ED secondary survey was necessarily complete.

12. ICU Admission Indications

Airway protection/mechanical ventilation need; ongoing cardiovascular resuscitation; severe head injury; multi-organ support need; coagulopathy requiring correction; invasive monitoring need; active rewarming for hypothermic patients.

13. Interhospital Transfer Consideration

Identify EARLY the potential need for transfer to a facility capable of definitive care, based on known injuries/injury patterns — do not delay this decision until deterioration forces an emergent, less-controlled transfer. Effective structured handoff communication is essential — the ATLS 11th edition introduces an updated transfer mnemonic: S-xABCDE-BAR (Situation, xABCDE status, Background, Assessment, Recommendation) for standardized handoff to the receiving facility.

14. Coagulopathy in Trauma

Trauma-induced coagulopathy occurs in 25-30% of polytrauma patients and should be promptly corrected, particularly with concurrent TBI/spinal cord injury given the risk of hemorrhage expansion. Preinjury anticoagulant/antiplatelet use is common, especially in older adults — rapid identification and reversal of these agents is vital in the presence of TBI/SCI (see Coagulopathy protocol, Hematology System, for full reversal-agent detail). Target hemoglobin >=7 g/dL following TBI or SCI specifically.

15. Organ Support

Damage control resuscitation per the Hypovolemic Shock protocol (Cardiovascular System) for hemorrhagic shock; mechanical ventilation per standard indications; ICP/CPP management per the TBI protocol if head injury present; standard ICU supportive care through the tertiary survey period and beyond.

16. Consultation Matrix

17. Monitoring Framework

Continuous vital signs, serial lactate/base deficit trend, urine output, serial hemoglobin/coagulation panel, continuous neuro checks if TBI/SCI present, temperature (active rewarming surveillance), tertiary survey completion tracking.

18. Documentation & Medicolegal Checklist

19. Key Guidelines

American College of Surgeons. Advanced Trauma Life Support (ATLS), 11th Edition Course Manual, 2023 — primary reference for this entire protocol.

20. Landmark Trials

Bickell WH, Wall MJ, Pepe PE, et al. Immediate versus delayed fluid resuscitation for hypotensive patients with penetrating torso injuries. N Engl J Med. 1994;331(17):1105-1109 — foundational permissive hypotension evidence. CRASH-2 collaborators. Early tranexamic acid in bleeding trauma patients. Lancet. 2011;377(9771):1096-1101. Cothren CC, Osborn PM, Moore EE, et al. Preperitoneal pelvic packing for hemodynamically unstable pelvic fracture: a paradigm shift. J Trauma. 2007;2(4):834-842.

21. Controversies

ATLS's traditional shock classification (Class I-IV by percent blood loss) has been critically reappraised and questioned as not reliably reflecting clinical reality (Mutschler et al., Resuscitation 2013) — use clinical trajectory and objective markers (lactate, base deficit) alongside, not instead of, vital signs. Permissive hypotension in BLUNT trauma specifically lacks the same level of definitive evidence as penetrating trauma, and the SBP 90/110 targets represent extrapolated, expert-consensus guidance rather than blunt-trauma-specific RCT data. Optimal prehospital crystalloid volume ceiling continues to be refined by ongoing research.

22. References

1. American College of Surgeons. Advanced Trauma Life Support, 11th Edition Course Manual, 2023 (Chapters 1-3, 6, 14, 15).
2. Govil D, Kumar GP. General Management of Trauma. ICU Protocols: A Step-wise Approach, 2nd ed. Springer; 2020 (Ch. 10).
3. Bickell WH, Wall MJ, Pepe PE, et al. Immediate versus delayed fluid resuscitation for hypotensive patients with penetrating torso injuries. N Engl J Med. 1994;331(17):1105-1109.
4. CRASH-2 collaborators. The importance of early treatment with tranexamic acid in bleeding trauma patients. Lancet. 2011;377(9771):1096-1101.
5. Mutschler A, Nienaber U, Brockamp T, et al. A critical reappraisal of the ATLS classification of hypovolaemic shock. Resuscitation. 2013;84:309-313.
6. Acquisto NM, Mosier JM, Bittner EA, et al. SCCM clinical practice guidelines for rapid sequence intubation in the critically ill adult patient. Crit Care Med. 2023;51(10):1411-1430.

See also: Hypovolemic Shock (Cardiovascular System) for full damage control resuscitation/massive transfusion detail; Traumatic Brain Injury (Neurology System); Chest Trauma, Abdominal Trauma, Pelvic Trauma, Spinal Injury (Trauma System) for injury-specific management.