• Scott A Irwin, Sanjai Rao, Kimberly A Bower, Joanna Palica, Sanjay S Rao, Jeanne E Maglione, Matt Soskins, Amy E Betterton, and Frank D Ferris.
• Center for Palliative Studies, San Diego Hospice and Palliative Care, Department of Psychiatry, University of California, San Diego, La Jolla, California 92103, USA. sirwin@sdhospice.org
• Palliat Support Care. 2008 Jun 1;6(2):159-64.

ObjectivesDelirium is prevalent, difficult to assess, under-recognized, and undertreated in hospice and palliative care settings. Furthermore, it is associated with significant morbidity and mortality. Under-recognition of delirium results in under-treatment and increased suffering. The intent of this study was to retrospectively evaluate the recognition of delirium in a large cohort of hospice patients by interdisciplinary hospice care teams.MethodsA retrospective chart review of 2,716 patients receiving hospice care was conducted in order to determine the baseline rate of recognition of delirium in patients with advanced, life-threatening illnesses by front-line hospice clinicians. Documentation of "delirium" as either a diagnosis or problem was used as an estimate of how often these disorders were considered significant issues by the treating interdisciplinary team.ResultsOf the patients receiving home/long-term care, 17.8% (386/2168) had delirium documented as a diagnosis or significant problem. The presence of recognized delirium in this setting was associated with significant differences in marital status, ethnicity, hospice diagnosis, and age. Total length of hospice care was also significantly longer. Of patients receiving inpatient care, 28.3% (614/548) had delirium documented as a diagnosis or significant problem. Recognized delirium in this setting was associated with significant differences in gender, ethnicity, hospice diagnosis, and length of inpatient stay.Significance Of ResultsIf documentation is representative of the care that the interdisciplinary teams provide, delirium of any kind appears to be under-recognized in this population. In fact, it is on the low end of prevalence estimates in the literature. Improved delirium assessment is needed in order to minimize the impact of delirium on patients living with advanced, life-threatening illnesses and their caregivers.

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