Trial reportBiological psychiatry2012
Replication of ketamine's antidepressant efficacy in bipolar depression: a randomized controlled add-on trial.
Trial report in Biological psychiatry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 4 registered trials, which are not on this map. Cited by 365 papers, 23 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Prospective Randomized Double Blinded Control Trial Using Ketamine or Propofol Anesthesia for Electroconvulsive Therapy: Improving Treatment-Resistant Depression
Clinical Trial of the Use of Ketamine in Treatment Resistant Depression
ED Treatment of Suicidal Patients With Ketamine Infusion
Evaluation of Schemes of Administration of Intravenous Ketamine in Treatment-resistant Depression: Clinical-neuroimaging Correlation
Who cites it
365 citing papers in PubMed, 23 syntheses or guidelines pooled it, 806 citations in OpenAlex.
- Efficacy of racemic ketamine or esketamine monotherapy for reducing suicidal ideation in uni- or bipolar depression: a systematic review and meta-analysis.European archives of psychiatry and clinical neuroscience · 2025Pooled it
- Appetite measures as correlates of clinical response in mood disorders treated with ketamine: systematic review.Frontiers in nutrition · 2025Pooled it
- Efficacy and safety of ketamine and esketamine for unipolar and bipolar depression: an overview of systematic reviews with meta-analysis.Frontiers in psychiatry · 2024Pooled it
- A transdiagnostic systematic review and meta-analysis of ketamine's anxiolytic effects.Journal of psychopharmacology (Oxford, England) · 2023Pooled it
- Efficacy and safety of perioperative application of ketamine on postoperative depression: A meta-analysis of randomized controlled studies.Molecular psychiatry · 2023Pooled it
- International pooled patient-level meta-analysis of ketamine infusion for depression: In search of clinical moderators.Molecular psychiatry · 2022Pooled it
- Ketamine treatment for refractory anxiety: A systematic review.British journal of clinical pharmacology · 2022Pooled it
- Blood-based biomarkers of antidepressant response to ketamine and esketamine: A systematic review and meta-analysis.Molecular psychiatry · 2022Pooled it
- Efficacy and safety of racemic ketamine and esketamine for depression: a systematic review and meta-analysis.Expert opinion on drug safety · 2022Pooled it
- Pooled it
- The effect of ketamine on cognition, anxiety, and social functioning in adults with psychiatric disorders: A systematic review and meta-analysis.Frontiers in neuroscience · 2022Pooled it
- The Mechanisms Behind Rapid Antidepressant Effects of Ketamine: A Systematic Review With a Focus on Molecular Neuroplasticity.Frontiers in psychiatry · 2022Pooled it
- Brain Changes Associated With Long-Term Ketamine Abuse, A Systematic Review.Frontiers in neuroanatomy · 2022Pooled it
- Ketamine and other glutamate receptor modulators for depression in adults with bipolar disorder.The Cochrane database of systematic reviews · 2021Pooled it
- Ketamine for Bipolar Depression: A Systematic Review.The international journal of neuropsychopharmacology · 2021Pooled it
- Efficacy of ketamine for major depressive episodes at 2, 4, and 6-weeks post-treatment: A meta-analysis.Psychopharmacology · 2021Pooled it
- Improving Suicide Prevention Through Evidence-Based Strategies: A Systematic Review.The American journal of psychiatry · 2021Pooled it
- The kynurenine pathway in bipolar disorder: a meta-analysis on the peripheral blood levels of tryptophan and related metabolites.Molecular psychiatry · 2021Pooled it
- Comparative Efficacy and Tolerability of Adjunctive Pharmacotherapies for Acute Bipolar Depression: A Systematic Review and Network Meta-analysis.Canadian journal of psychiatry. Revue canadienne de psychiatrie · 2021Pooled it
- Pharmacological Augmentation in Unipolar Depression: A Guide to the Guidelines.The international journal of neuropsychopharmacology · 2020Pooled it
305 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors at 3 institutions in 2 countries.
Funding
Abstract
backgroundCurrently, no pharmacological treatments for bipolar depression exist that exert rapid (within hours) antidepressant or antisuicidal effects. We previously reported that intravenous administration of the N-methyl-D-aspartate antagonist ketamine produced rapid antidepressant effects in patients with treatment-resistant bipolar depression. The present study sought to replicate this finding in an independent sample.
methodsIn this double-blind, randomized, crossover, placebo-controlled study, 15 subjects with DSM-IV bipolar I or II depression maintained on therapeutic levels of lithium or valproate received a single intravenous infusion of either ketamine hydrochloride (.5 mg/kg) or placebo on 2 test days 2 weeks apart. The primary outcome measure was the Montgomery-Asberg Depression Rating Scale, which was used to rate overall depressive symptoms at baseline; at 40, 80, 110, and 230 minutes postinfusion; and on days 1, 2, 3, 7, 10, and 14 postinfusion.
resultsWithin 40 minutes, depressive symptoms, as well as suicidal ideation, significantly improved in subjects receiving ketamine compared with placebo (d = .89, 95% confidence interval = .61-1.16, and .98, 95% confidence interval = .64-1.33, respectively); this improvement remained significant through day 3. Seventy-nine percent of subjects responded to ketamine and 0% responded to placebo at some point during the trial. The most common side effect was dissociative symptoms, which occurred only at the 40-minute time point.
conclusionsThis study replicated our previous finding that patients with bipolar depression who received a single ketamine infusion experienced a rapid and robust antidepressant response. In addition, we found that ketamine rapidly improved suicidal ideation in these patients.
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Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.