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Title: Effect of a single dose of intravenous ketamine on the wish to hasten death in palliative care: A case report in advanced cancer.
Author: Decazes E, Rigal O, Clatot F.
Journal: Palliat Support Care; 2023 Aug; 21(4):765-767. PubMed ID: 36960611.
Abstract:
OBJECTIVES: The suffering experienced by some patients at the end of their lives can lead to a wish to hasten death (WTHD). It is sometimes an existential suffering, refractory to palliative care even if well conducted, which leads to this desire. Since several years, in psychiatry, the rapid anti-suicidal effects of a single injection of ketamine have been proven. WTHD and suicidal ideation have similarities. The injection of a single dose of ketamine could have an efficiency on the desire to hasten death. METHODS: We report the case of a woman with advanced breast cancer expressing a WTHD, treated by ketamine. RESULTS: A 78-year-old woman expressed a WTHD (request for euthanasia) because of existential suffering following a loss of autonomy related to cancer. The suicide item was 4 on the Montgomery-Åsberg Depression Rating Scale (MADRS). She had no associated pain or depression. A single dose of intravenous ketamine 1 mg/kg over 40 min plus 1 mg of midazolam was injected. She had no adverse effects. From D1 post-injection to D3, the WTHD disappeared completely with a MADRS suicide item at 0. At D5, the WTHD started to reappear, and at D6, the previous speech was completely back. SIGNIFICANCE OF THE RESULTS: These results suggest an effect of ketamine on WTHD. This opens up the possibility of treating existential suffering at the end of life. The optimal dosage of this treatment would have to be determined as well as a maintenance of efficacy scheme.

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