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

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Abstract

Objectives: This study investigates repeated oral esketamine as a substitution strategy for maintenance electroconvulsive therapy (M-ECT) in eight patients with treatment-resistant depression (TRD).

Methods: 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.

Results: 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.

Conclusions: 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.

Original languageEnglish
JournalJournal of ECT
DOIs
Publication statusE-pub ahead of print - 21-Jan-2025

Keywords

  • chart review
  • difficult-to-treat depression
  • ketamine
  • major depressive disorder
  • treatment resistance

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