• Resuscitation · Jun 2022

    Observational Study

    Intra-Cardiac Arrest Transport and Survival from Out-of-Hospital Cardiac Arrest: A Nationwide Observational Study.

    • Mathias J Holmberg, Asger Granfeldt, Nikola Stankovic, and Lars W Andersen.
    • Research Center for Emergency Medicine, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark; Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers, Denmark. Electronic address: mathias.holmberg@clin.au.dk.
    • Resuscitation. 2022 Jun 1; 175: 50-56.

    AimTo assess whether intra-cardiac arrest transport as compared to continued on-scene resuscitation was associated with improved clinical outcomes among out-of-hospital cardiac arrest patients in Denmark.MethodsThis was an observational study using data from population-based registries in Denmark. Adults (aged ≥ 18 to ≤ 65 years) with an out-of-hospital cardiac arrest attended by Emergency Medical Services (EMS) between 2016 and 2018 were included. The primary outcome was survival to 30 days. Time-dependent propensity score matching was used to match patients transported to the hospital within 20 minutes of EMS arrival to patients with assumed on-scene resuscitation (with or without subsequent intra-cardiac arrest transport) at risk of being transported within the same minute.ResultsThe full cohort included 2,873 cardiac arrests. The median age was 56 (quartiles: 48 to 62) years, 1987 (69%) were male, and 104 (4%) were transported within 20 minutes. A total of 87 transported patients were matched to 87 patients at risk of being transported based on the propensity score. Although not reaching statistical significance, in comparison with on-scene resuscitation, intra-cardiac arrest transport was associated with increased survival to 30 days (risk ratio, 1.55; 95%CI, 0.99-2.44; P = 0.06). Similar associations were observed for return of spontaneous circulation and survival to one year.ConclusionsAmong patients aged 18-65 years, intra-cardiac arrest transport was associated with a non-significant increase in survival within 20 minutes of EMS on-scene arrival. However, the results did not eliminate the potential for bias and the results should be interpreted carefully.Copyright © 2022 The Author(s). Published by Elsevier B.V. All rights reserved.

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