• Age and ageing · Mar 2015

    Review Meta Analysis

    Preventing delirium: should non-pharmacological, multicomponent interventions be used? A systematic review and meta-analysis of the literature.

    • Felipe Martinez, Catalina Tobar, and Nathan Hill.
    • Centro de Investigaciones Biomedicas, Universidad de Valparaiso, Valparaiso, Chile Departamento de Salud Publica, Universidad de Valparaiso, Valparaiso, Chile.
    • Age Ageing. 2015 Mar 1; 44 (2): 196-204.

    BackgroundDelirium is a complex neuropsychiatric syndrome that is common among elderly inpatients. It has been associated with increased mortality, longer hospital stays, cognitive and functional decline and increased institutionalisation rates. Multicomponent interventions, a series of non-pharmacological strategies frequently handled by nursing staff, might be useful for prevention.ObjectivesTo assess the efficacy of multicomponent interventions in preventing incident delirium in the elderly.MethodsA systematic review of randomised trials was undertaken. Two independent reviewers performed iterative literature searches in seven databases without language restrictions. Grey literature repositories were considered as well. The quality of included trials was assessed by using the criteria established by the Cochrane Collaboration. When possible, data were synthesised into a meta-analysis. Heterogeneity was assessed using the χ2 and I2 tests.FindingsA total of 21,788 citations were screened, and seven studies of diverse quality were included in the review, comprising 1,691 participants. Multicomponent interventions significantly reduced incident delirium (relative risk [RR] 0.73, 95% confidence interval [CI] 0.63-0.85, P<0.001) and accidental falls during the hospitalisation (RR 0.39, 95% CI 0.21, 0.72, P=0.003), without evidence of differential effectiveness according to ward type or dementia rates. Non-significant reductions in delirium duration, hospital stay and mortality were found as well.InterpretationMulticomponent interventions are effective in preventing incident delirium among elderly inpatients. Effects seemed to be stable among different settings. Due to the limited amount of data, potential benefits in survival need to be confirmed in further studies. Future research should be aimed at contrasting different multicomponent programmes to select the most useful interventions.© The Author 2014. Published by Oxford University Press on behalf of the British Geriatrics Society. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

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