• J. Am. Coll. Cardiol. · Dec 2014

    Observational Study

    Is epinephrine during cardiac arrest associated with worse outcomes in resuscitated patients?

    • Florence Dumas, Wulfran Bougouin, Guillaume Geri, Lionel Lamhaut, Adrien Bougle, Fabrice Daviaud, Tristan Morichau-Beauchant, Julien Rosencher, Eloi Marijon, Pierre Carli, Xavier Jouven, Thomas D Rea, and Alain Cariou.
    • INSERM U970, Parisian Cardiovascular Research Center, Paris Descartes University, Paris, France; Emergency Department, Cochin-Hotel-Dieu Hospital, APHP, Paris Descartes University, Paris, France. Electronic address: florence.dumas@cch.aphp.fr.
    • J. Am. Coll. Cardiol. 2014 Dec 9;64(22):2360-7.

    BackgroundAlthough epinephrine is essential for successful return of spontaneous circulation (ROSC), the influence of this drug on recovery during the post-cardiac arrest phase is debatable.ObjectivesThis study sought to investigate the relationship between pre-hospital use of epinephrine and functional survival among patients with out-of-hospital cardiac arrest (OHCA) who achieved successful ROSC.MethodsWe included all patients with OHCA who achieved successful ROSC admitted to a cardiac arrest center from January 2000 to August 2012. Use of epinephrine was coded as yes/no and by dose (none, 1 mg, 2 to 5 mg, >5 mg). A favorable discharge outcome was coded using a Cerebral Performance Category 1 or 2. Analyses incorporated multivariable logistic regression, propensity scoring, and matching methods.ResultsOf the 1,556 eligible patients, 1,134 (73%) received epinephrine; 194 (17%) of these patients had a good outcome versus 255 of 422 patients (63%) in the nontreated group (p < 0.001). This adverse association of epinephrine was observed regardless of length of resuscitation or in-hospital interventions performed. Compared with patients who did not receive epinephrine, the adjusted odds ratio of intact survival was 0.48 (95% confidence interval [CI]: 0.27 to 0.84) for 1 mg of epinephrine, 0.30 (95% CI: 0.20 to 0.47) for 2 to 5 mg of epinephrine, and 0.23 (95% CI: 0.14 to 0.37) for >5 mg of epinephrine. Delayed administration of epinephrine was associated with worse outcome.ConclusionsIn this large cohort of patients who achieved ROSC, pre-hospital use of epinephrine was consistently associated with a lower chance of survival, an association that showed a dose effect and persisted despite post-resuscitation interventions. These findings suggest that additional studies to determine if and how epinephrine may provide long-term functional survival benefit are needed.Copyright © 2014 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.

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