Prehospital traumatic cardiac arrest: management and outcomes from the Resuscitation Outcomes Consortium Epistry-Trauma and PROPHET registries.

Background: Traumatic arrests have historically had poor survival rates. Identifying salvageable patients and ideal management is challenging. We aimed to: 1) Describe the management and outcomes of prehospital traumatic arrests; 2) Determine regional variation in survival; and 3) Identify Advanced Life Support (ALS) procedures associated with survival. Methods: This was a secondary analysis of cases from the Resuscitation Outcomes Consortium Epistry-Trauma and Prospective Observational Prehospital and Hospital Registry for Trauma registries. Patients were included if they suffered a blunt or penetrating injury and received CPR. Logistic regression analyses were used to determine the association between ALS procedures and survival. Results: We included 2300 patients who were predominately young (Epistry mean: 39 years, SD: 20 years; PROPHET mean: 40 years, SD: 19 years), males (79%), injured by blunt trauma (Epistry: 68%, PROPHET: 67%), and treated by ALS paramedics (Epistry: 93%, PROPHET: 98%). A total of 145 patients (6.3%) survived to hospital discharge. More patients with blunt (Epistry 8.3%, PROPHET: 6.5%) vs. penetrating injuries (Epistry 4.6%, PROPHET: 2.7%) survived. Most survivors (81%) had vitals on EMS arrival. Rates of survival varied significantly between the 12 study sites (p=0.048) in the Epistry but not PROPHET (p=0.14) registries. PROPHET patients who received a supraglottic airway insertion or intubation experienced decreased odds of survival (Adjusted ORs: 0.27, 95% CI: 0.08-0.93, and 0.37, 95% CI: 0.17-0.78, respectively) compared to those receiving bag-mask ventilation. No other procedures were associated with survival. Conclusions: Survival from traumatic arrest may be higher than expected, particularly in blunt trauma and patients with vitals on EMS arrival. Although limited by confounding and statistical power, no ALS procedures were associated with an increased odds of survival. Level of Evidence: Level IV, prognostic study (C) 2016 Lippincott Williams & Wilkins, Inc.

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