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The use of a series of ketamine infusions in two patients with treatment-resistant depression.

Michael Messer, Irina V Haller, Pamela Larson, Julia Pattison-Crisostomo, Charles E Gessert

The Journal of neuropsychiatry and clinical neurosciences 2010 DOI: 10.1176/jnp.2010.22.4.442 (opens in new tab)

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Study at a glance

AI-extracted from the abstract
Characteristics Case study Case report Peer reviewed
Sample size 2
Population Two patients with treatment-resistant depression
Intervention Ketamine
Topics Depression Esketamine Ketamine
Key findings The authors report that multiple ketamine treatments may provide an effective rapid antidepressant effect with prolonged benefit in two patients with treatment-resistant depression.

Abstract

Treatment-resistant depression often leads to increased morbidity and disability. The authors report the use of ketamine, a selective N-methyl-D-aspartate (NMDA) receptor antagonist, in two patients with treatment-resistant depression. Multiple ketamine treatments may provide an effective rapid antidepressant effect with prolonged benefit.

Comparable studies

Other case reports and case series on ketamine for depression, most cited first.

Study Year Design Participants
Electroconvulsive Therapy, Ketamine, and Esketamine in a Patient with Major Depressive Disorder and Multiple Comorbidities: A Case Report over 10-year Treatment from Adolescence to Adulthood. A patient with treatment-resistant depression and comorbid generalized anxiety... 2025 Case report n = 1
A longitudinal case series of IM ketamine for patients with severe and enduring eating disorders and comorbid treatment‐resistant depression Patients with enduring eating disorders and treatment-resistant depression 2021 Case series n = 4
Effects of intranasal (S)-ketamine on Veterans with co-morbid treatment-resistant depression and PTSD: A retrospective case series Veterans with co-morbid depression and PTSD 2022 Retrospective case series n = 35
Case report: Intramuscular ketamine or intranasal esketamine as a treatment in four patients with major depressive disorder and comorbid anorexia nervosa Patients with anorexia nervosa and a comorbid depressive disorder treated at a private... 2023 Case report n = 4
Repeated oral esketamine in patients with treatment resistant depression and comorbid posttraumatic stress disorder Patients with treatment-resistant depression and comorbid PTSD 2023 Case series n = 5

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Depression Esketamine Ketamine

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