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Ketamine: all studies

Page 13 of 448: studies 121 to 130 of 4,475, newest first. Back to the ketamine overview

Research

Clinical correlates of anhedonia non-response to ketamine in treatment-resistant depression.

Journal of Affective Disorders August 15, 2026 Michał Walaszek, Wiesław Jerzy Cubała, Zofia Kachlik et al.

Anhedonia, a core symptom of major depressive disorder (MDD), is associated with illness severity, suicide risk, poor functioning, and predicts poor response to antidepressants. While no treatments are approved, ketamine and esketamine show promise in reducing anhedonia. This study examines clinical and sociodemographic features linked to anhedonia treatment response in treatment-resistant...

Blood biomarker changes in response to low-dose oral ketamine treatment in adults with major depressive disorder (MDD) and post-traumatic stress disorder (PTSD)

medRxiv August 14, 2026 Annette M Braxton, Christina Driver, Daniel F. Hermens et al. preprint

Abstract Major depressive disorder (MDD) and post-traumatic stress disorder (PTSD) are prevalent, chronic, and disabling mental health conditions which are difficult to treat. Ketamine has demonstrated effect for improving depression and PTSD symptoms independently but reports often overlook focused comorbid improvement of these symptoms within individuals. To address this, we assessed...

Efficacy of intraoperative ketamine in attenuating emergence agitation in patients with sexual trauma-related post-traumatic stress disorder

Australian and New Zealand Continence Journal August 11, 2026 Janine Stirling, M. Doane, M. Simon et al.

Post-traumatic stress disorder places patients at risk for emergence agitation following surgical procedures under general anaesthesia. Gynaecological procedures, sphincteroplasty, and surgical interventions involving the pelvic floor can involve vulnerable patient positioning in theatre, with inserted catheters and sensory stimulation. Such interventions could contribute to postoperative...

EP676 - ECE_1786 - Ketamine induced Hyponatremia

European Journal of Endocrinology August 10, 2026 Huma Humayun Khan, Jeremy Tomlinson

Abstract Ketamine is a dissociative anaesthesia which also has analgesic properties and is also used in pain management and depression1. As it produces an out-of-body and rewarding experience, there is a potential danger for abuse of this medication2.Cystitis and cholangiopathy are recognized side effects of ketamine use3,however, published data on ketamine-induced hyponatremia is scarce.The...

Exploratory non-randomized clinical trial of subcutaneous esketamine in treatment-resistant depression: Effects of ketamine-assisted psychotherapy

Journal of Affective Disorders August 10, 2026 Yves Martins Varela, Patrícia Cavalcanti-Ribeiro, Geovan Menezes de Sousa et al.

BACKGROUND: Ketamine is an effective rapid-acting treatment for treatment-resistant depression (TRD), producing antidepressant effects within hours of administration. Because it induces states of heightened neuroplasticity and psychological openness, psychotherapy may enhance its therapeutic effects. METHODS: This exploratory, nonrandomized, open-label clinical trial evaluated the adjunctive...

Ketamine Across the Dose-State Continuum: EEG Signatures, Network Dynamics, and Implications for Brain-State Monitoring in Anesthesia and Critical Care.

Brain Sciences August 9, 2026 Vikas Chauhan, Fareena Khan

Ketamine produces clinical states ranging from subanesthetic analgesia and dissociation to anesthetic-dose behavioral unresponsiveness. Its electroencephalographic (EEG) effects differ from the slow-delta and frontal-alpha patterns commonly observed with GABAergic-dominant anesthetics and vary with exposure, administration kinetics, and co-administered agents. After anesthetic bolus dosing,...