What should paramedics do during a traumatic cardiac arrest?

Management of Traumatic Cardiac Arrest by Paramedics

Paramedics should immediately focus on identifying and treating reversible causes of traumatic arrest rather than following standard cardiac arrest protocols—prioritize hemorrhage control, airway management, bilateral chest decompression for suspected tension pneumothorax, and rapid transport to a trauma center while minimizing or avoiding epinephrine and standard CPR. 1

Critical Initial Assessment

Upon encountering a traumatic arrest, paramedics must first determine if resuscitation should be initiated:

Withhold Resuscitation When:

• Injuries incompatible with life exist (decapitation, hemicorporectomy, open skull with extruding brain matter, incineration) 1, 2
• Signs of prolonged death are present (rigor mortis, dependent lividity, decomposition) 1, 2
• Valid DNR/DNAR orders are documented 1

Initiate Resuscitation When:

• None of the above conditions exist
• Signs of life were witnessed before arrest
• The mechanism suggests potentially reversible causes 1

The Trauma-Specific Resuscitation Algorithm

The fundamental difference from medical cardiac arrest: Traumatic arrest requires treating specific reversible causes (the "Hs and Ts" of trauma) rather than focusing on chest compressions and rhythm analysis 3, 4, 5.

Priority 1: Life-Saving Interventions (LSIs) - Perform BEFORE Standard ACLS

Hemorrhage Control:

• Apply direct pressure to bleeding wounds
• Pack deep wounds with hemostatic gauze
• Apply tourniquets to extremity hemorrhage
• These interventions take absolute priority 1

Airway Management:

• Use the least invasive approach necessary
• Secure definitive airway if within scope
• Optimize oxygenation and ventilation
• Avoid excessive ventilation (can worsen outcomes) 1

Chest Decompression:

• Perform bilateral needle or finger thoracostomy if chest trauma is suspected
• Critical caveat: Do NOT perform empiric bilateral decompression without suspected chest trauma 1
• Tension pneumothorax is a rapidly reversible cause of traumatic arrest 3, 4

Priority 2: Secondary Interventions

Chest Compressions:

• May be considered but only AFTER the above LSIs are performed
• Standard compressions are less effective in hypovolemic arrest 1, 5
• Should not delay transport or other critical interventions

Vascular Access:

• Establish IV/IO access for volume resuscitation
• Administer blood products if available in your system
• Crystalloid resuscitation for hypovolemia 1

Priority 3: What NOT to Do

Epinephrine:

• Should NOT be routinely administered 1
• If used at all, must be given AFTER all LSIs are completed
• Evidence shows potential harm, especially in blunt trauma 6, 7
• The 2025 NAEMSP/ACS-COT/ACEP guidelines explicitly recommend against routine use 1

Cardiac Monitoring:

• Do not delay LSIs to place monitors 1
• Rhythm analysis is NOT the priority (unlike medical arrest)
• Non-shockable rhythms (PEA/asystole) are associated with extremely poor outcomes but should not be the sole reason to terminate resuscitation 1

Transport Decision-Making

Immediate transport to a trauma center is indicated when:

• Witnessed signs of life occurred before arrest
• CPR was initiated within 5 minutes
• Reversible causes have been addressed or are being managed
• Transport time is reasonable for your system 2, 1

Consider terminating resuscitation when:

• No ROSC after 30 minutes of appropriate resuscitation (including bystander CPR) 2
• All reversible causes have been addressed without response
• Important: Mechanism of injury alone should NOT determine termination 1
• Important: Electrical rhythm alone should NOT determine termination 1

Point-of-Care Ultrasound (POCUS)

If available and trained:

• Absence of cardiac motion on POCUS has prognostic utility 1
• Can identify pericardial tamponade (another reversible cause)
• Should be performed AFTER indicated LSIs, not before 1

Special Populations

Pediatric Traumatic Arrest:

• Same principles apply with age-appropriate modifications
• Immediate transport for witnessed signs of life with CPR initiated within 5 minutes 2
• Consider termination after 30 minutes of unsuccessful resuscitation in unwitnessed arrest 2

Drowning/Lightning/Hypothermia:

• These require standard resuscitation protocols (not trauma-specific)
• Continue resuscitation even with prolonged downtime if significant hypothermia present 2

Common Pitfalls to Avoid

1. Following standard ACLS protocols: This delays treatment of reversible causes and worsens outcomes 1, 5

2. Prioritizing chest compressions over hemorrhage control: In hemorrhagic shock, compressions circulate an empty vascular system 5

3. Routine epinephrine administration: This may worsen outcomes and should not precede LSIs 1

4. Prolonged scene time: Balance LSIs with rapid transport—perform critical interventions en route when possible 1

5. Using mechanism alone to determine futility: Blunt vs. penetrating should not be the sole determinant 1

The Evidence Landscape

The most recent and authoritative guidance comes from the 2025 joint position statement by NAEMSP, ACS-COT, and ACEP 1, which represents a significant update from previous 2013 guidelines. This reflects evolving understanding that traumatic arrest requires a fundamentally different approach than medical arrest, with survival rates of 2-7.5% possible when appropriate interventions are rapidly deployed 7, 8. The key is recognizing that standard AHA cardiac arrest algorithms 9 were designed for medical arrest and should not be the primary framework for trauma.