Risk stratification of survival in injured patients with cardiopulmonary resuscitation within the first hour of arrival to trauma centre: retrospective analysis from the national trauma data bank

Outcomes in traumatic cardiac arrest patients who underwent advanced life support

OBJECTIVE

Survival following a traumatic cardiac arrest (TCA) remains poor despite research focused on specific management and guideline adaptation. Previous research has identified factors including age, arresting rhythm, injury severity and distance from hospital to be associated with prehospital TCA outcomes. The present study aimed to review the local incidence of TCA to inform local practice within a mature trauma system.

METHODS

A retrospective trauma database review from 2008 to 2021 was conducted at the Royal Brisbane and Women's Hospital. Patients were categorised by prehospital and in-hospital arrest, prehospital return of spontaneous circulation (ROSC), and year in relation to TCA management protocol changes. Descriptive comparative analysis was performed with the primary outcome of interest being survival to hospital discharge.

RESULTS

Survival to hospital discharge was similar in patients in whom TCA occurred in the prehospital environment and hospital (24 vs 29%). Mechanism of injury, response to intervention and location of cardiac arrest were important outcome associations. Patients with a positive focused assessment with sonography in trauma scan were less likely to achieve ROSC but more likely to survive to discharge. The frequency of prehospital interventions remained similar after the guideline changes; with more patients arriving to the hospital with improved haemodynamic parameters and increased survival.

CONCLUSIONS

These results support the identification and immediate management of TCA. No patients survived if they did not achieve ROSC by hospital arrival, questioning the role for aggressive management beyond the ED in this cohort. Future research will focus on the identification of patients with potentially positive survival outcomes and further define futile intervention factors.

Factors associated with survival in adult patients with traumatic arrest: a retrospective cohort study from US trauma centers

Background

Traumatic arrests increasingly affect young adults worldwide with low reported survival rates. This study examines factors associated with survival (to hospital discharge) in traumatic arrests transported to US trauma centers.

Methods

This retrospective cohort study used the US National Trauma Databank 2015 dataset and included patients who presented to trauma centers with “no signs of life”. Univariate and bivariate analyses were done. Factors associated with survival were identified using multivariate regression analyses.

Results

The study included 5980 patients with traumatic arrests. Only 664 patients (11.1%) survived to hospital discharge. Patients were predominantly in age group 16–64 (84.6%), were mostly males (77.8%) and white (55.1%). Most were admitted to Level I (55.5%) or Level II trauma centers (31.6%). Injuries were mostly blunt (56.7%) or penetrating (39.3%). The median of the injury severity score (ISS) was 19 (interquartile range [IQR]: 9–30). Factors associated with decreased survival included: Age group ≥ 65 (Ref: 16–24), male gender, self-inflicted and other or undetermined types of injuries (Ref: assault), injuries to head and neck, injuries to torso and ISS ≥ 16 (Ref: < 16) and ED thoracotomy. While factors associated with increased survival included: All injury mechanisms (with the exception of motor vehicle transportation) (Ref: firearm), injuries to extremities or spine and back and all methods of coverage (Ref: self-pay).

Conclusion

Patients with traumatic arrests have poor outcomes with only 11.1% surviving to hospital discharge. Factors associated with survival in traumatic arrests were identified. These findings are important for devising injury prevention strategies and help guide trauma management protocols to improve outcomes in traumatic arrests.

Level of evidence

Level III.

Survival of trauma patients needing CPR shortly after arrival: The NationalTrauma Data Bank Research Data Set

BACKGROUND

Cardio Pulmonary Resuscitation (CPR) for traumatized patients in the field portends poor survival but the outcome of trauma patients who arrive in-extremis and undergo CPR shortly after arrival has not been well studied. The purpose of our review is to evaluate survival to discharge for trauma patients with CPR from 1 to 120 minutes (min) after arrival.

METHODS

The NTDB Research Data Set (RDS) was reviewed. Patients with vitals in the field who underwent CPR from 1 to 120 min after arrival were divided according to injury type and Injury Severity Score (ISS). Survival to discharge outcomes were determined in patients that underwent CPR from 1-60 min and 61-120 min after arrival.

RESULTS

The RDS contained 968,665 patients and 9,365 (0.96%) had CPR from 1 to 120 min after arrival. For blunt injuries with CPR from 1 to 60 min, survival was similar for all levels of ISS (8.5-10.2%, p > 0.05). Blunt injury patients with CPR 61-120 min and ISS 1-15 had significantly higher survival rate compared to ISS >25 (36.1% vs 8.7%, p < 0.00003). For penetrating injuries and CPR from 1 to 60 min, survival was similar for all levels of ISS (4.3-6.8%, p > 0.05); Blunt and penetrating patients with CPR from 61 to 120 min, and ISS 1-15 had the highest survivals at 36.1 and 36.4%.

CONCLUSION

Trauma patients who undergo CPR shortly after arrival have a survival rate of (4.3%-36.4%). Over one-third of blunt and penetrating injuries and low ISS who had CPR from 61 to 120 min after arrival survived. Trauma patients who arrest shortly after arrival warrant an aggressive approach.