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Psychooncology. 2012 Feb;21(2):187-94. doi: 10.1002/pon.1881. Epub 2010 Dec 19.

Delirium prevention in terminal cancer: assessment of a multicomponent intervention.

Author information

1
Centre de Recherche en Cancérologie, l'Hôtel-Dieu de Québec, Centre Hospitalier Universitaire de Québec, Quebec City, QC, Canada. pierre.gagnon@crhdq.ulaval.ca

Abstract

OBJECTIVE:

Delirium is a highly prevalent and deleterious disorder in terminally ill cancer patients. We assessed whether a multicomponent preventive intervention was effective in decreasing delirium incidence and severity among cancer patients receiving end-of-life care.

METHODS:

A cohort of 1516 patients was followed from admission to death at seven Canadian palliative care centers. In two of these centers, routine care included a delirium preventive intervention targeting physicians (written notice on selective delirium risk factors and inquest on intended medication changes), patients, and their family (orientation to time and place, information about early delirium symptoms). Delirium frequency and severity were compared between patients at the intervention (N = 674) and usual-care (N = 842) centers based on thrice-daily symptom assessments with the Confusion Rating Scale.

RESULTS:

The overall rate of adherence to the intervention was 89.7%. The incidence of delirium was 49.1% in the intervention group, compared with 43.9% in the usual-care group (odds ratio [OR] 1.23, P = 0.045). When confounding variables were controlled for, no difference was observed between the intervention and the usual-care groups in delirium incidence (OR 0.94, P = 0.66), delirium severity (1.83 vs. 1.92; P = 0.07), total days in delirium (4.57 vs. 3.57 days; P = 0.63), or duration of first delirium episode (2.9 vs. 2.1 days; P = 0.96). Delirium-free survival was similar in the two groups.

CONCLUSION:

A simple multicomponent preventive intervention was ineffective in reducing delirium incidence or severity among cancer patients receiving end-of-life care. Delirium prevention remains a difficult challenge in terminally ill cancer patients.

PMID:
22271539
DOI:
10.1002/pon.1881
[Indexed for MEDLINE]
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