Vasopressin and epinephrine vs. epinephrine alone in cardiopulmonary resuscitation

Pierre-Yves Gueugniaud, Jean-Stéphane David, Eric Chanzy, Hervé Hubert, Pierre-Yves Dubien, Patrick Mauriaucourt, Coralie Bragança, Xavier Billères, Marie-Paule Clotteau-Lambert, Patrick Fuster, Didier Thiercelin, Guillaume Debaty, Agnès Ricard-Hibon, Patrick Roux, Catherine Espesson, Emgan Querellou, Laurent Ducros, Patrick Ecollan, Laurent Halbout, Dominique Savary, Frédéric Guillaumée, Régine Maupoint, Philippe Capelle, Cécile Bracq, Philippe Dreyfus, Philippe Nouguier, Antoine Gache, Claude Meurisse, Bertrand Boulanger, Claude Lae, Jacques Metzger, Valérie Raphael, Arielle Beruben, Volker Wenzel, Comlavi Guinhouya, Christian Vilhelm, Emmanuel Marret
New England Journal of Medicine 2008 July 3, 359 (1): 21-30

BACKGROUND: During the administration of advanced cardiac life support for resuscitation from cardiac arrest, a combination of vasopressin and epinephrine may be more effective than epinephrine or vasopressin alone, but evidence is insufficient to make clinical recommendations.

METHODS: In a multicenter study, we randomly assigned adults with out-of-hospital cardiac arrest to receive successive injections of either 1 mg of epinephrine and 40 IU of vasopressin or 1 mg of epinephrine and saline placebo, followed by administration of the same combination of study drugs if spontaneous circulation was not restored and subsequently by additional epinephrine if needed. The primary end point was survival to hospital admission; the secondary end points were return of spontaneous circulation, survival to hospital discharge, good neurologic recovery, and 1-year survival.

RESULTS: A total of 1442 patients were assigned to receive a combination of epinephrine and vasopressin, and 1452 to receive epinephrine alone. The treatment groups had similar baseline characteristics except that there were more men in the group receiving combination therapy than in the group receiving epinephrine alone (P=0.03). There were no significant differences between the combination-therapy and the epinephrine-only groups in survival to hospital admission (20.7% vs. 21.3%; relative risk of death, 1.01; 95% confidence interval [CI], 0.97 to 1.05), return of spontaneous circulation (28.6% vs. 29.5%; relative risk, 1.01; 95% CI, 0.97 to 1.06), survival to hospital discharge (1.7% vs. 2.3%; relative risk, 1.01; 95% CI, 1.00 to 1.02), 1-year survival (1.3% vs. 2.1%; relative risk, 1.01; 95% CI, 1.00 to 1.02), or good neurologic recovery at hospital discharge (37.5% vs. 51.5%; relative risk, 1.29; 95% CI, 0.81 to 2.06).

CONCLUSIONS: As compared with epinephrine alone, the combination of vasopressin and epinephrine during advanced cardiac life support for out-of-hospital cardiac arrest does not improve outcome. ( number, NCT00127907.)

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