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Ketamine combined with psychotherapy as a treatment for resistant depression in a public European hospital

2026-01-01Artigo de investigação Acesso aberto
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dc.contributor.authorSilva, Filipa Alves da
dc.contributor.authorAvelar, Rita
dc.contributor.authorPeixoto, Bernardo
dc.contributor.authorBacelar-Nicolau, Leonor
dc.contributor.authorSantos, Francisco
dc.contributor.authorRibeiro, João Costa
dc.contributor.authorHeitor, Maria João
dc.date.accessioned2026-01-27T12:12:31Z
dc.date.available2026-01-27T12:12:31Z
dc.date.issued2026-01-01
dc.description.abstractPurpose: Depression affects around 280 million people worldwide, and about 30% of patients have treatment-resistant depression. Ketamine has significant scientific evidence supporting its use as an antidepressant, making it a promising approach for treatment-resistant cases. Combining ketamine with psychotherapy may enhance therapeutic response and support longer-lasting cognitive and behavioral change. This pilot proof-of-concept study aims to evaluate the effect of treatment with ketamine infusion combined with psychological intervention in a sample of nine patients with treatment-resistant depression at a general hospital within the Portuguese National Health Service. Methods: Clinical outcomes were measured through the clinical interview and the patient health questionnaire (PHQ-9) to assess complete or partial improvement. Results: Following eight weeks of treatment, all showed a reduction in their PHQ-9 scores, with the median score transitioning from a baseline categorization of “severe” depression to a “moderate” level. It was found that 44.4% (4/9) of participants showed a response to treatment (? 50% reduction in the PHQ-9 score). Among the patients with suicidal ideation, slightly over half showed remission of these thoughts at the end of treatment. Among the participants subsequently monitored as outpatients, only 29% (2/7) experienced a deterioration in mood within three months post-treatment, requiring an adjustment of antidepressant therapy. Conclusion: In our study, an improvement in depressive symptoms was observed, despite their severity, in a sample submitted to multiple previous pharmacological strategies.This retrospective study evaluated ketamine infusions combined with psychotherapy in nine patients with treatment-resistant depression at a general hospital. After eight weeks, all participants improved, with PHQ-9 scores shifting from severe to moderate. Overall, 44% responded to treatment, and among those with suicidal ideation, more than half showed remission.eng
dc.identifier.citationSilva, F. A. D., Avelar, R., Peixoto, B., & Bacelar-Nicolau, L. et al. (2026). Ketamine combined with psychotherapy as a treatment for resistant depression in a public European hospital. Brain and Behavior, 16(1), Article e71164. https://doi.org/10.1002/brb3.71164
dc.identifier.doi10.1002/brb3.71164
dc.identifier.eid105027121779
dc.identifier.issn2157-9032
dc.identifier.other09b04499-6ca4-4e60-accb-5b232f20c062
dc.identifier.pmcPMC12796847
dc.identifier.pmid41527475
dc.identifier.urihttp://hdl.handle.net/10400.14/56770
dc.language.isoeng
dc.peerreviewedyes
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectKetamine
dc.subjectOff-label ketamine
dc.subjectPsychedelic-assisted therapy
dc.subjectPsychotherapy
dc.subjectResistant depression
dc.subjectResponse rates
dc.subjectTreatment
dc.titleKetamine combined with psychotherapy as a treatment for resistant depression in a public European hospitaleng
dc.typeresearch article
dspace.entity.typePublication
oaire.citation.issue1
oaire.citation.titleBrain and Behavior
oaire.citation.volume16
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85

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