• J Am Geriatr Soc · Jun 2017

    Delirium in the Emergency Department and Its Extension into Hospitalization (DELINEATE) Study: Effect on 6-month Function and Cognition.

    • Jin H Han, Eduard E Vasilevskis, Rameela Chandrasekhar, Xulei Liu, John F Schnelle, Robert S Dittus, and E Wesley Ely.
    • Center for Quality Aging, Vanderbilt University School of Medicine, Nashville, TN, USA.
    • J Am Geriatr Soc. 2017 Jun 1; 65 (6): 1333-1338.

    BackgroundThe natural course and clinical significance of delirium in the emergency department (ED) is unclear.ObjectivesWe sought to (1) describe the extent to which delirium in the ED persists into hospitalization (ED delirium duration) and (2) determine how ED delirium duration is associated with 6-month functional status and cognition.DesignProspective cohort study.SettingTertiary care, academic medical center.ParticipantsED patients ≥65 years old who were admitted to the hospital.MeasurementsThe modified Brief Confusion Assessment Method was used to ascertain delirium in the ED and hospital. Premorbid and 6-month function were determined using the Older American Resources and Services Activities of Daily Living (OARS ADL) questionnaire which ranged from 0 (completely dependent) to 28 (completely dependent). Premorbid and 6-month cognition were determined using the short form Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE) which ranged from 1 to 5 (severe dementia). Multiple linear regression was performed to determine if ED delirium duration was associated with 6-month function and cognition adjusted for baseline OARS ADL and IQCODE, and other confounders.ResultsA total of 228 older ED patients were enrolled. Of the 105 patients who were delirious in the ED, 81 (77.1%) patients' delirium persisted into hospitalization. For every ED delirium duration day, the 6-month OARS ADL decreased by 0.63 points (95% CI: -1.01 to -0.24), indicating poorer function. For every ED delirium duration day, the 6-month IQCODE increased 0.06 points (95% CI: 0.01-0.10) indicating poorer cognition.ConclusionsDelirium in the ED is not a transient event and frequently persists into hospitalization. Longer ED delirium duration is associated with an incremental worsening of 6-month functional and cognitive outcomes.© 2017, Copyright the Authors Journal compilation © 2017, The American Geriatrics Society.

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