A comparison of the universal TOR Guideline to the absence of prehospital ROSC and duration of resuscitation in predicting futility from out-of-hospital cardiac arrest
Ian R Drennan, Erin Case, P Richard Verbeek, Joshua C Reynolds, Zachary D Goldberger, Jamie Jasti, Mark Charleston, Heather Herren, Ahamed H Idris, Paul R Leslie, Michael A Austin, Yan Xiong, Robert H Schmicker, Laurie J Morrison, Resuscitation Outcomes Consortium Investigators, Ian R Drennan, Erin Case, P Richard Verbeek, Joshua C Reynolds, Zachary D Goldberger, Jamie Jasti, Mark Charleston, Heather Herren, Ahamed H Idris, Paul R Leslie, Michael A Austin, Yan Xiong, Robert H Schmicker, Laurie J Morrison, Resuscitation Outcomes Consortium Investigators
Abstract
Introduction: The Universal Termination of Resuscitation (TOR) Guideline accurately identifies potential out-of-hospital cardiac arrest (OHCA) survivors. However, implementation is inconsistent with some Emergency Medical Service (EMS) agencies using absence of return of spontaneous circulation (ROSC) as sole criterion for termination.
Objective: To compare the performance of the Universal TOR Guideline with the single criterion of no prehospital ROSC. Second, to determine factors associated with survival for patients transported without a ROSC. Lastly, to compare the impact of time to ROSC as a marker of futility to the Universal TOR Guideline.
Design: Retrospective, observational cohort study.
Participants: Non-traumatic, adult (≥18 years) OHCA patients of presumed cardiac etiology treated by EMS providers.
Setting: ROC-PRIMED and ROC-Epistry post ROC-PRIMED databases between 2007 and 2011.
Outcomes: Primary outcome was survival to hospital discharge and the secondary outcome was functional survival. We used multivariable regression to evaluate factors associated with survival in patients transported without a ROSC.
Results: 36,543 treated OHCAs occurred of which 9467 (26%) were transported to hospital without a ROSC. Patients transported without a ROSC who met the Universal TOR Guideline for transport had a survival of 3.0% (95% CI 2.5-3.4%) compared to 0.7% (95% CI 0.4-0.9%) in patients who met the Universal TOR Guideline for termination. The Universal TOR Guideline identified 99% of survivors requiring continued resuscitation and transportation to hospital including early identification of survivors who sustained a ROSC after extended durations of CPR.
Conclusion: Using absence of ROSC as a sole predictor of futility misses potential survivors. The Universal TOR Guideline remains a strong predictor of survival.
Keywords: Cardiopulmonary resuscitation; Emergency Medical Services; Heart arrest.
Conflict of interest statement
The authors report no conflicts of interest. The authors alone are responsible for the writing and content of the paper.
Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.
Figures
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Source: PubMed