Abstract
Purpose
Trauma patients are rapidly transported to the hospital for definitive care. Nonetheless, some are alive upon Emergency Medical Services (EMS) arrival but arrest on-scene or during transport. The study objective was to examine EMS-witnessed traumatic arrests to define patients who survived hospital discharge.
Methods
Patients sustaining EMS-witnessed traumatic arrest and entered into the National Trauma Data Bank were included (2007–2018). Mortality defined groups: survival to hospital discharge vs. in-hospital death vs. death in ED/declared dead on arrival (DOA). ANOVA/Chi-square compared cohorts. Multivariable analysis established factors associated with survival out of ED and to hospital discharge.
Results
After exclusions, 14,177 patients met the criteria: 10% survived, 22% died in hospital, and 68% died in ED/DOA. Survivors tended to be female (33% vs. 23% vs. 23%, p < 0.001), blunt traumas (71% vs. 56% vs. 60%, p < 0.001), have higher scene GCS (15 [7–15] vs. 3 [3–11] vs. 3 [3–7], p < 0.001), and lower injury severity (ISS 13 [7–26] vs. 27 [18–41] vs. 25 [10–30], p < 0.001), particularly of the head (AIS 0 [0–2] vs. 0 [0–4] vs. 1 [0–4], p < 0.001). Survival to hospital discharge was independently associated with higher field GCS (OR 1.252, p < 0.001) and SBP (OR 1.006, p < 0.001), and Head AIS scores (OR 1.073, p < 0.001). Increasing age (OR 0.984, p < 0.001), higher ISS (OR 0.975, p < 0.001), male sex (OR 0.695, p < 0.001), and penetrating mechanism of injury (OR 0.537, p < 0.001) were associated with reduced survival to discharge.
Conclusion
After EMS-witnessed traumatic cardiac arrest, survivors were more likely to be young, female, injured by blunt trauma, and less hypotensive/comatose on-scene. These findings may have implications for ED resuscitation or declaration of care futility and should be further investigated with a prospective multicenter study.
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Authors Schellenberg, Owattanapanich, Ugarte, Grigorian, Nahmias, Lam, Martin, and Inaba declare that they have no conflict of interest.
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All procedures performed in this retrospective observational study involving human participants were in accordance with the ethical standards of the Institutional Review Board of the University of California (HS-22-00061) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
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This study received a waiver for informed consent by the Institutional Review Board of the University of Southern California (HS-22-00061).
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Schellenberg, M., Owattanapanich, N., Ugarte, C. et al. Witnessed prehospital traumatic arrest: predictors of survival to hospital discharge. Eur J Trauma Emerg Surg (2023). https://doi.org/10.1007/s00068-023-02398-3
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DOI: https://doi.org/10.1007/s00068-023-02398-3