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Oral Esketamine as Alternative for Maintenance Electroconvulsive Therapy in Patients With Treatment-Resistant Depression: A Case Series.

Daniël T Coerts, Jolien K E Veraart, Jeanine Kamphuis, Sanne Y Smith-Apeldoorn, Robert A Schoevers, Sjoerd M van Belkum

The Journal of ECT January 21, 2025 DOI: 10.1097/YCT.0000000000001103 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Observational study Case report Peer reviewed
Sample size 8
Population Patients with treatment-resistant depression
Intervention oral esketamine
Dose 0.5 or 1.0 mg/kg titrated to maximum 3.0 mg/kg twice weekly
Duration 6-week dosing phase
Topics Depression Esketamine
Keywords Depression treatment Esketamine therapy Mental health breakthrough Psychiatric medicine Treatment alternatives
Citations 1
Key findings Repeated oral esketamine maintained or improved depression severity in five of eight patients with treatment-resistant depression, suggesting it may be a viable alternative to maintenance electroconvulsive therapy.

Abstract

This study investigates repeated oral esketamine as a substitution strategy for maintenance electroconvulsive therapy (M-ECT) in eight patients with treatment-resistant depression (TRD). In a 6-week dosing phase, esketamine was titrated from 0.5 or 1.0 mg/kg to a maximum of 3.0 mg/kg twice weekly. Outcomes included 6-week change in Inventory of Depressive Symptomatology - Self-rated (IDS-SR), Hamilton Depression Rating Scale - 17 items (HDRS17), and Outcome Questionnaire 45 (OQ-45), along with esketamine treatmentcontinuation. Depression severity remained stable or improved in five patients, whereas three experienced worsening symptoms and resumed M-ECT. OQ-45 scores were available for five patients, all of whom showed improvement. Currently, four patients are still receiving oral esketamine. Repeated oral esketamine may be a suitable and patient-friendly alternative to M-ECT. We recommend controlled trials to compare long-term safety and efficacy.

Comparable studies

Other observational and cohort studies on esketamine for depression, most cited first.

Study Year Design Participants
Treating bipolar depression with esketamine: Safety and effectiveness data from a naturalistic multicentric study on esketamine in bipolar versus unipolar treatment‐resistant depression Patients with treatment-resistant bipolar depression (B-TRD) and unipolar... 2023 Observational cohort n = 70
Comparative Effectiveness of Intravenous Ketamine and Intranasal Esketamine in Clinical Practice Among Patients With Treatment-Refractory Depression: An Observational Study. Adults with treatment-resistant depression 2023 Observational study n = 62
Predicting outcome with Intranasal Esketamine treatment: A machine-learning, three-month study in Treatment-Resistant Depression (ESK-LEARNING) Treatment-resistant depression patients 2023 Retrospective, multicentric, real-world study n = 149
Esketamine in treatment-resistant depression patients comorbid with substance-use disorder: A viewpoint on its safety and effectiveness in a subsample of patients from the REAL-ESK study Patients with treatment-resistant depression and a substance use disorder 2023 Observational, retrospective, multicentre study n = 26
Rapid infusion of esketamine for unipolar and bipolar depression: a retrospective chart review Patients with treatment-resistant depression and bipolar depression meeting DSM-IV-TR... 2017 Retrospective observational study n = 27

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