A Comparison of Repeated High Doses and Repeated Standard Doses of Epinephrine for Cardiac Arrest Outside the Hospital
Pierre-Yves Gueugniaud, M.D., Ph.D., Pierre Mols, M.D., Ph.D., Patrick Goldstein, M.D., Emmanuel Pham, M.D., Pierre-Yves Dubien, M.D., Carine Deweerdt, Ph.D., Michel Vergnion, M.D., Paul Petit, M.D., Pierre Carli, M.D., for The European Epinephrine Study Group
Background Clinical trials have not shown a benefit of highdoses of epinephrine in the management of cardiac arrest. Weconducted a prospective, multicenter, randomized study comparingrepeated high doses of epinephrine with repeated standard dosesin cases of out-of-hospital cardiac arrest.
Methods Adult patients who had cardiac arrest outside the hospitalwere enrolled if the cardiac rhythm continued to be ventricularfibrillation despite the administration of external electricalshocks, or if they had asystole or pulseless electrical activityat the time epinephrine was administered. We randomly assigned3327 patients to receive up to 15 high doses (5 mg each) orstandard doses (1 mg each) of epinephrine according to the currentprotocol for advanced cardiac life support.
Results In the high-dose group, 40.4 percent of 1677 patientshad a return of spontaneous circulation, as compared with 36.4percent of 1650 patients in the standard-dose group (P=0.02);26.5 percent of the patients in the high-dose group and 23.6percent of those in the standard-dose group survived to be admittedto the hospital (P=0.05); 2.3 percent of the patients in thehigh-dose group and 2.8 percent in the standard-dose group survivedto be discharged from the hospital (P=0.34). There was no significantdifference in neurologic status according to treatment amongthose discharged. High-dose epinephrine improved the rate ofsuccessful resuscitation in patients with asystole, but notin those with ventricular fibrillation.
Conclusions In our study, long-term survival after cardiac arrestoutside the hospital was no better with repeated high dosesof epinephrine than with repeated standard doses.
Source Information
From the Department of Anesthesiology and Emergency Medical System, Service d'Aide Médicale Urgente of Lyons, Edouard Herriot Hospital, Claude Bernard University, Lyons, France (P.-Y.G., P.-Y.D., P.P.); the Department of Emergency Medicine and Emergency Medical System, Service d'Aide Médicale Urgente of Brussels, Centre Hospitalier Universitaire Saint-Pierre, Brussels, Belgium (P.M.); the Department of Anesthesiology and Emergency Medical System, Service d'Aide Médicale Urgente of Lille, Centre Hospitalier Régional et Universitaire of Lille, Lille, France (P.G.); the Department of Computers and Statistics, Medical Service, Claude Bernard University, Lyons, France (E.P.); the Pharmaceutical Department, Edouard Herriot Hospital, Lyons, France (C.D.); the Department of Emergency Medicine, Service Mobile d'Urgence et de Réanimation of the Centre Hospitalier Régional Citadelle, Liege, Belgium (M.V.); and the Department of Anesthesiology and Emergency Medical System, Service d'Aide Médicale Urgente of Paris, Centre Hospitalier Universitaire Necker, Paris (P.C.).
Address reprint requests to Dr. Gueugniaud at the Department of Anesthesiology VII, Pavillon I, Hôpital Edouard Herriot, Place d'Arsonval, 69437 Lyons CEDEX 03, France.
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