6 Multisystem Trauma Integration

Prioritize immediate threats

Patients with multiple injuries need a coordinated response that identifies and treats threats to life before less urgent injuries. When a team is available, assessment and treatment can occur in parallel: one clinician may manage the airway while another controls bleeding, obtains vital signs, and prepares transport. Care must follow local protocols, scope of practice, and medical direction.

The xABCDE approach provides a shared structure for the primary survey. Treat an immediately life-threatening problem as soon as it is found; do not wait for a complete diagnosis or examination.

• x — Exsanguinating hemorrhage: Find and control immediately life-threatening external bleeding. Use firm direct pressure, wound packing, or a tourniquet when indicated and within protocol. Consider concealed bleeding when the mechanism, examination, or perfusion suggests it.

• A — Airway with spinal motion restriction as indicated: Check whether the patient can speak and maintain an open airway. Clear or suction obstruction, and use appropriate airway maneuvers and adjuncts. When injury is suspected, protect against avoidable spinal movement without delaying essential airway care.

• B — Breathing: Assess chest movement, effort, oxygenation, and breath sounds. Recognize and promptly treat immediately dangerous chest problems within scope and protocol. Give oxygen and support ventilation when indicated.

• C — Circulation: Assess pulse, skin, mental status, blood pressure, and signs of poor perfusion. Look for bleeding at wounds and likely concealed sites, including the chest, abdomen, pelvis, and long bones. Establish access and resuscitate according to the system’s hemorrhage protocol; avoid delaying transport for nonessential procedures.

• D — Disability: Rapidly assess mental status, pupils, and motor or sensory deficits; record a GCS when feasible. Repeat the examination to detect deterioration.

• E — Exposure and environment: Expose enough to find injuries, then cover the patient and actively protect against heat loss. Hypothermia can worsen bleeding and complicate resuscitation.

Reassess and manage competing threats

Repeat the primary survey after interventions and whenever the patient’s condition changes. Record trends, not just a single set of findings. A normal initial blood pressure does not rule out evolving shock; worsening confusion, weak peripheral pulses, cool or clammy skin, rapid breathing, or a deteriorating pulse may be important warning signs.

A focused head-to-toe secondary survey and history, such as SAMPLE, follow once immediate threats are being addressed. If a life-threatening problem appears during the secondary survey, stop and treat it.

Integrate hemorrhage and perfusion

In multisystem trauma, shock may result from bleeding, chest injury, cardiac problems, or other causes. Search for the source while supporting oxygenation and perfusion. Control external bleeding promptly, and suspect internal hemorrhage when shock is unexplained or persists. A pelvic binder may be indicated for suspected unstable pelvic injury under local protocol. Reassess interventions and watch for recurrent bleeding.

Protect against secondary brain injury

Hypoxemia and hypotension are associated with worse outcomes after severe TBI. Monitor oxygen saturation and blood pressure repeatedly, correct hypoxemia promptly, and avoid hypotension. Track GCS and pupil findings over time, noting important changes and medication effects.

Avoid routine hyperventilation. Guidance described in the material recommends normal ventilation and reserves hyperventilation for signs of cerebral herniation. A patient with suspected brain injury and major hemorrhage needs both rapid hemorrhage control and protection from low oxygen and low blood pressure. Do not apply a permissive-hypotension strategy to a patient with significant TBI; use the applicable local resuscitation protocol and expedite definitive care.

Choose the destination and transport plan

Transport decisions should reflect physiology, injury pattern, mechanism, special patient factors, travel time, and the capabilities of the regional trauma system. Use current local field-triage criteria to select an appropriate destination. The 2021 national field-triage guideline is intended to guide destination decisions for injured patients, not mass-casualty triage or hospital trauma-team activation.

Patients with unstable physiology or injuries requiring specialized resources generally need a trauma center capable of definitive care. For severe TBI, destination planning should account for timely imaging and neurosurgical capability. When available, match pediatric patients to pediatric trauma resources.

When a time-critical injury is suspected, choose a transport mode and route that minimize total prehospital time. Perform essential lifesaving interventions en route when feasible, but avoid unnecessary scene delay for procedures that can safely wait.

Before departure, ensure the patient is secured, bleeding-control measures remain effective, and monitoring is in place. Notify the receiving facility. If direct transport to definitive care is not feasible, follow regional protocols for stabilization and transfer.

Coordinate the team and transfer care

A clear team structure helps reduce duplicated work and missed priorities. Assign a team leader, airway clinician, circulation and bleeding-control clinician, recorder, and other roles appropriate to the team’s size. The leader maintains the overall picture, sets priorities, and invites updates.

Use closed-loop communication: direct a task to a named team member, have that person repeat it, and ask them to complete it and report the result. State changes in condition aloud and confirm that the team has heard them.

Give an early, concise prearrival report that includes:

• Mechanism and time of injury, and suspected injuries.

• Initial and current vital signs and trends, plus mental status and GCS.

• Bleeding, interventions, and response to treatment.

• Relevant medical history or medications, estimated arrival time, and resources likely to be needed.

Update the hospital if the patient deteriorates or the plan changes. At handoff, summarize status, key findings, trends, treatments, and unresolved concerns. The receiving clinician should confirm critical information and clarify who is responsible for ongoing care.

Structured trauma checklists can help teams confirm that key assessment, treatment, reassessment, and communication tasks were completed. The WHO Trauma Care Checklist includes checks for bleeding, airway needs, neurovascular status, hypothermia, serial examinations, and discussion of the plan with the receiving team.

Apply the priorities in a trauma scenario

After a high-speed crash, a patient is pale and confused, has a deep thigh wound, and has unequal chest movement. The team controls the major external bleed, addresses the immediate breathing threat, supports oxygenation and circulation, and reassesses mental status and vital signs.

The leader requests trauma-center transport and gives an early report that includes changing physiology and interventions. A complete limb examination and other secondary-survey tasks continue once immediate threats are controlled, provided they do not delay transport.