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Insomnia and Esketamine Add-On Therapy to Antidepressant Therapy in Patients with Treatment-Resistant Depression-A Pilot Study.

Daniel Szawarnoga, Joanna Fojcik, Michał Górski, Artur Pałasz, Marek Krzystanek

Pharmaceuticals July 19, 2025 DOI: 10.3390/ph18071066 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Observational cohort Pilot study Peer reviewed
Sample size 50
Population Patients with drug-resistant depression
Interventions Esketamine in combination with other antidepressants other antidepressants
Topics Depression Esketamine
Keywords Insomnia Sleep disorders Stubborn depression Refractory depression Sleep disturbances Sleep problems
Citations 1
Key findings Esketamine use is associated with less insomnia and improved sleep quality compared with other antidepressants in patients with drug-resistant depression.

Abstract

Background: Insomnia, as one of the most common sleep disorders, is a significant health problem, especially among patients suffering from drug-resistant depression. Problems related to the quality of sleep in that population can significantly affect the effectiveness of treatment and quality of life, which is why it is necessary to search for effective therapeutic interventions in this area.

Objective: The aim of this study was to compare the effectiveness of esketamine and other standard antidepressants in improving sleep quality in patients with drug-resistant depression. The main research question is whether and to what extent esketamine improves sleep parameters compared with other antidepressants.

Methods: This study involves the analysis of data collected from 50 patients divided into two groups: those using esketamine in combination with other antidepressants and those using other antidepressants. The analysis of the results focuses on the assessment of differences in AIS scores between the groups assessed using the Athens Insomnia Scale (AIS).

Results: Insomnia occurs much less frequently among people using esketamine than among people not using this drug. With the increase in the time of using esketamine and with the increase in the dose, the level of insomnia decreases.

Conclusions: Esketamine brings about a rapid improvement in sleep quality, which is a significant advance in the treatment of drug-resistant depression. The obtained results not only confirm the effectiveness of esketamine but also show its advantage over traditional treatment methods in improving sleep quality.

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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