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Intravenous Droperidol or Olanzapine as an Adjunct to Midazolam for the Acutely Agitated Patient: A Multicentre, Randomized, Double-Blind, Placebo-Controlled Clinical Trail. Annals of Emergency Medicine, Jan 2013, Volume 61, No. 1, p 72-81. Introduction & Background.
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Intravenous Droperidol or Olanzapine as an Adjunct to Midazolam for the Acutely Agitated Patient: A Multicentre, Randomized, Double-Blind, Placebo-Controlled Clinical Trail Annals of Emergency Medicine, Jan 2013, Volume 61, No. 1, p 72-81
Introduction & Background • Agitation and aggression common in ED due to mental illness, drug/alcohol intoxication, or both • Studies in ED have compared benzo’s vs. antipsychotics • Combination therapy? - limited data, most in non ED settings • “black box” doperidol – prolonged QT and torsades des pointes, olanzapine i.v. (instead of i.m.)
Material & Methods • Multicentre, randomized, double-blind, placebo controlled, double dummy clinical trial • Inclusion criteria: 18-65 y/old with need for i.v. drugs sedation for acute agitation Exclusion criteria: hypersensitivity, reversible cause for agitation, pregnancy, acute alcohol withdrawal • One of 3 groups of drugs: • Control group: placebo-droperidol, placebo-olanzapine • Droperidol group: droperidol 5mg, placebo-olanzapine • Olanzapine group: placebo-droperidol, olanzapine 5mg • All followed by midazolam, 2.5mg <50kg, 5mg >50kg, max. 20mg • Sedation measured by 6-point, validated sedation scale, =<2 • Primary outcome: time to adequate sedationSecondary outcome: need for additional sedation, need for resedation, total midazolam used, QTc, ED length of stay and adverse events
Results • 336 enrolled patients, similar baseline characteristics • Time to adequate sedation for droperidol and olanzapine significantly shorter: 4 min and 5 min • % pts sedated at 5 min similar for all groups, at 10min more pts sedated w/droperidol or olanzapine • No difference in need for addition sedation, more resedation in control group • Similar adverse event rates in all groups, no serious a/e, no QTc changes
Conclusion & Discussion • Limitations: • Selection bias • Observer bias with use of scale • Droperidol vs. olanzapine • Intravenous route not always possible • Conclusion: • i.v. droperidol or olanzapine as adjunct to i.v. midazolam is efficacious and safe and provides more rapid sedation for acutely agitated patients in the ED • Further studies to compare use of i.v. olanzapine alone with other sedative