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dc.contributor.authorLoo, C.-
dc.contributor.authorGálvez, V.-
dc.contributor.authorO'Keefe, E.-
dc.contributor.authorMitchell, P.-
dc.contributor.authorHadzi-Pavlovic, D.-
dc.contributor.authorLeyden, J.-
dc.contributor.authorHarper, S.-
dc.contributor.authorSomogyi, A.-
dc.contributor.authorLai, R.-
dc.contributor.authorWeickert, C.-
dc.contributor.authorGlue, P.-
dc.identifier.citationActa Psychiatrica Scandinavica, 2016; 134(1):48-56-
dc.description.abstractObjective: This pilot study assessed the feasibility, efficacy and safety of an individual dose-titration approach, and of the intravenous (IV), intramuscular (IM) and subcutaneous (SC) routes for treating depression with ketamine. Method: Fifteen treatment-refractory depressed participants received ketamine or midazolam (control treatment) in a multiple crossover, double-blind study. Ketamine was administered by IV (n = 4), IM (n = 5) or SC (n = 6) injection. Dose titration commenced at 0.1 mg/kg, increasing by 0.1 mg/kg up to 0.5 mg/kg, given in separate treatment sessions separated by ≥1 week, with one placebo control treatment randomly inserted. Mood, psychotomimetic and hemodynamic effects were assessed and plasma ketamine concentrations assayed. Results: Twelve participants achieved response and remission criteria, achieved at doses as low as 0.1 mg/kg. All three routes of administration resulted in comparable antidepressant effects. Fewest adverse effects were noted with the SC route. Antidepressant response, adverse effects and ketamine concentrations were dose-related. Conclusion: Antidepressant response occurred at a range of doses and at <0.5 mg/kg. The dose-titration approach is a practical method for optimizing the efficacy - side-effects trade-off on an individual patient basis. This pilot study provides preliminary evidence for SC injection as a practical, feasible and efficacious treatment approach.-
dc.description.statementofresponsibilityC.K. Loo, V. Gálvez, E. O’Keefe, P.B. Mitchell, D. Hadzi-Pavlovic, J. Leyden, S. Harper, A.A. Somogyi, R. Lai, C.S. Weickert, P. Glue-
dc.rights© 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd-
dc.subjectKetamine; dose titration; intraveneous; intramuscular; intranasal-
dc.titlePlacebo-controlled pilot trial testing dose titration and intravenous, intramuscular and subcutaneous routes for ketamine in depression-
dc.typeJournal article-
dc.identifier.orcidSomogyi, A. [0000-0003-4779-0380]-
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