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Radboud M Marijnissen

3 papers in the library · 2 citations · publishing 2025-2026

Papers

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Ketamine addiction following a single sub-anaesthetic ketamine treatment for acute suicidality in a psychiatrically multimorbid patient: case report

BJPsych Open May 1, 2026 Gijsbrecht H. J. Roelandt, Jurriaan F. M. Strous, Jeanine Kamphuis et al.

Summary This case report presents the case of a 25-year-old woman who developed ketamine addiction following a single sub-anaesthetic dose of intranasal ketamine in a pilot study investigating intranasal racemic ketamine for acute suicidality. She had a history of depression, obsessive–compulsive disorder, autism spectrum disorder and anorexia nervosa, and she had sporadically used alcohol and...

Single fixed-dose intranasal racemic ketamine treatment for the treatment of acute suicidality in a transdiagnostic patient population: Results of a pilot study.

Psychiatry Research March 1, 2026 Gijsbrecht H J Roelandt, Jurriaan F M Strous, Radboud M Marijnissen et al. 1 citation

Ketamine has been shown to decrease suicidality in patients with depression. However, little is known about tolerability and efficacy in heterogenous, acutely suicidal patients in emergency settings. This pilot study aimed to assess the feasibility, acceptability, and safety of generic intranasal racemic ketamine (75 mg) in the treatment of acute suicidality regardless of the underlying...

The Ketamine Trial for Acute Suicidality (KETA): Study Protocol of a Double-Blind Randomized Placebo-Controlled Superiority Trial on Intranasal Racemic Ketamine Compared to the Active Placebo Intranasal Midazolam as Treatment for Acute Suicidality.

International Journal of Methods in Psychiatric Research December 1, 2025 Jurriaan F M Strous, Gijs H J Roelandt, Jens H van Dalfsen et al. 1 citation

Suicidality is a transdiagnostic entity in patients with and without psychiatric disorders. Ketamine is a novel treatment for treatment-resistant depression with favorable effects on related suicidality in this population. Little is known about the effects of ketamine on suicidality as a distinct phenomenon. To assess whether a dose of 75 mg intranasal (IN) ketamine reduces acute suicidality...