• Ann Emerg Med · Oct 2013

    Randomized Controlled Trial Comparative Study

    A randomized trial of intravenous ketorolac versus intravenous metoclopramide plus diphenhydramine for tension-type and all nonmigraine, noncluster recurrent headaches.

    • Benjamin W Friedman, Victoria Adewunmi, Caron Campbell, Clemencia Solorzano, David Esses, Polly E Bijur, and E John Gallagher.
    • Department of Emergency Medicine, Albert Einstein College of Medicine, Bronx, NY. Electronic address: bwfriedmanmd@gmail.com.
    • Ann Emerg Med. 2013 Oct 1; 62 (4): 311-318.e4.

    Study ObjectiveWe compare metoclopramide 20 mg intravenously, combined with diphenhydramine 25 mg intravenously, with ketorolac 30 mg intravenously in adults with tension-type headache and all nonmigraine, noncluster recurrent headaches.MethodsIn this emergency department (ED)-based randomized, double-blind study, we enrolled adults with nonmigraine, noncluster recurrent headaches. Patients with tension-type headache were a subgroup of special interest. Our primary outcome was a comparison of the improvement in pain score between baseline and 1 hour later, assessed on a 0 to 10 verbal scale. We defined a between-group difference of 2.0 as the minimum clinically significant difference. Secondary endpoints included need for rescue medication in the ED, achieving headache freedom in the ED and sustaining it for 24 hours, and patient's desire to receive the same medication again.ResultsWe included 120 patients in the analysis. The metoclopramide/diphenhydramine arm improved by a median of 5 (interquartile range 3, 7) scale units, whereas the ketorolac arm improved by a median of 3 (IQR 2, 6) (95% confidence interval [CI] for difference 0 to 3). Metoclopramide+diphenhydramine was superior to ketorolac for all 3 secondary outcomes: the number needed to treat for not requiring ED rescue medication was 3 (95% CI 2 to 6); for sustained headache freedom, 6 (95% CI 3 to 20); and for wish to receive the same medication again, 7 (95% CI 4 to 65). Tension-type headache subgroup results were similar.ConclusionFor adults who presented to an ED with tension-type headache or with nonmigraine, noncluster recurrent headache, intravenous metoclopramide+diphenhydramine provided more headache relief than intravenous ketorolac.Copyright © 2013 American College of Emergency Physicians. Published by Mosby, Inc. All rights reserved.

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