Cited by 286Treatment of Major DepressionSuicide and Self-Harm StudiesElectroconvulsive Therapy Studies

Improvement in suicidal ideation after ketamine infusion: Relationship to reductions in depression and anxiety

Open access
Ballard, Elizabeth D., Ionescu, Dawn F., Vande Voort, Jennifer L., Niciu, Mark J., Richards, Erica M., Luckenbaugh, David A., Brutsché, Nancy E., Ameli, Rezvan +2 more·2014·Journal of Psychiatric Research

Abstract

Objective Suicide is a psychiatric emergency. Currently, there are no approved pharmacologic treatments for suicidal ideation. Ketamine is an N-methyl-D-aspartate (NMDA) receptor antagonist that rapidly reduces suicidal ideation as well as depression and anxiety, but the dynamic between these symptoms is not known. The aim of this analysis was to evaluate whether ketamine has an impact on suicidal thoughts, independent of depressive and anxiety symptoms. Methods 133 patients with treatment-resistant depression (major depressive disorder or bipolar I/II disorder) received a single subanesthetic infusion of ketamine (0.5 mg/kg over 40 min). Post-hoc correlations and linear mixed models evaluated the relationship between suicidal ideation and depression and anxiety symptoms using the Hamilton Depression Rating Scale (HAMD), Scale for Suicidal Ideation (SSI), Beck Depression Inventory (BDI), and Hamilton Anxiety Rating Scale (HAMA) focusing on 230 min post-infusion. Results At 230 min post-infusion, correlations between changes in suicidal ideation and depression ranged from 0.23 to 0.44 (p < .05), accounting for up to 19% in the variance of ideation change. Correlations with anxiety ranged from 0.23 to 0.40 (p < .05), accounting for similar levels of variance. Ketamine infusion was associated with significant reductions in suicidal ideation compared to placebo, when controlling for the effects of ketamine on depression (F1,587 = 10.31, p = .001) and anxiety (F1,567 = 8.54, p = .004). Conclusions Improvements in suicidal ideation after ketamine infusion are related to, but not completely driven by, improvements in depression and anxiety. Investigation of the specific effects of ketamine on suicidal thoughts is warranted.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.jpsychires.2014.07.027

Cites

46 of 46 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Data from human studies, including the authors' group, show ketamine's rapid antidepressant effects even in individuals with treatment-resistant depression.

    “data from human studies, including our group [103], show ketamine's rapid antidepressant effects even in individuals with treatment-resistant depression”
  • Suicidal ideation and depression may be distinct but related phenomena; a reduction in depressive symptoms may accompany a reduction in suicidal ideation, as in ketamine infusion where improvements in suicidal ideation are related to, but not completely driven by, improvements in depression and anxiety.

    “Suicidal ideation and depression may be distinct, but related, phenomena (i.e., a reduction in depressive symptoms may accompany a reduction in suicidal ideation, as in ketamine infusion where improvements in suicidal ideation are related to, but not completely driven by, improvements in depression and anxiety [58]).”
  • Ketamine induces rapid amelioration of suicidal ideation in major depressed patients.

    “Ketamine has been also shown to induce a rapid amelioration of suicidal ideation in major depressed patients 23, 24”

    From Mechanisms of ketamine action as an antidepressant (2018) · cites this paper as [24]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

1 retracted

Flagged first, then by citations

Research works printed but not linked: 4

  1. U.S. Department of Health and Human Services (HHS) 2012 National Strategy for Suicide Prevention: Goals and Objectives for Action Office of the Surgeon General and National Action Alliance for Suicide Prevention Washington, DC HHS 2012 23136686
  2. Baca-Garcia E Perez-Rodriguez MM Oquendo MA Keyes KM Hasin DS Grant BF Estimating risk for suicide attempt: are we asking the right questions? Passive suicidal ideation as a marker for suicidal behavior J Affect Disord 2011 134 327 32 21784532 PMC3172880
  3. First MB Spitzer RL Gibbon M Williams JB Structured Clinical Interview for DSM-IV TR Axis I Disorders, Research Version, Patient Edition New York New York State Psychiatric Institute, Biometrics Research 2001
  4. Gibbons RD Brown CH Hur K Davis J Mann JJ Suicidal thoughts and behavior with antidepressant treatment: reanalysis of the randomized placebo-controlled studies of fluoxetine and venlafaxine Arch Gen Psychiatry 2012 69 580 7 22309973 PMC3367101

Cited by

Sorted by citations

Authors
Ballard, E. D., Ionescu, D. F., Vande Voort, J. L., Niciu, M. J., Richards, E. M., Luckenbaugh, D. A., Brutsché, N. E., Ameli, R., Furey, M. L., & Zarate, C. A.
Affiliations
National Institutes of Health (US)
Corresponding author
Ballard, Elizabeth D.
Venue
Journal of Psychiatric Research
Publisher
Elsevier BV
Published
2014-11
Volume
58
Pages
161-166
ISSN
0022-3956 (ISSN-L)
OpenAlex
W1976396510
Cited by
286
References
46
Citations by year
2026: 13 · 2025: 18 · 2024: 15 · 2023: 28 · 2022: 35 · 2021: 32 · 2020: 20 · 2019: 28 · 2018: 25 · 2017: 19 · 2016: 22 · 2015: 27 · 2014: 4
FWCI
17.49
Type
journal article
Language
en
Open access
Locations
  • Journal of Psychiatric Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health, National Institutes of Health (IRP-NIMH-NIH)
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Social Sciences › Psychology › Clinical Psychology › Suicide and Self-Harm Studies
  • Health Sciences › Medicine › Psychiatry and Mental health › Electroconvulsive Therapy Studies
Keywords
ketamine, suicidal ideation, treatment-resistant depression, bipolar disorder, anxiety, NMDA receptor antagonists, rapid-acting antidepressants, suicide prevention
MeSH terms
Adolescent, Adult, Aged, Analgesics, Depression, Female, Humans, Ketamine, Male, Middle Aged, Psychiatric Status Rating Scales, Statistics as Topic, Infusions, Subcutaneous, Young Adult, Suicidal Ideation

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review