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Lookup NU author(s): Dr Sarah Richardson, Professor John-Paul TaylorORCiD
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© 2016 AMDA – The Society for Post-Acute and Long-Term Care Medicine Delirium occurring in patients with dementia is referred to as delirium superimposed on dementia (DSD). People who are older with dementia and who are institutionalized are at increased risk of developing delirium when hospitalized. In addition, their prior cognitive impairment makes detecting their delirium a challenge. The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition and the International Statistical Classification of Diseases and Related Health Problems, 10th Revision are considered the standard reference for the diagnosis of delirium and include criteria of impairments in cognitive processes such as attention, additional cognitive disturbances, or altered level of arousal. The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition and the International Statistical Classification of Diseases and Related Health Problems, 10th Revision does not provide guidance regarding specific tests for assessment of the cognitive process impaired in delirium. Importantly, the assessment or inclusion of preexisting cognitive impairment is also not addressed by these standards. The challenge of DSD gets more complex as types of dementia, particularly dementia with Lewy bodies, which has features of both delirium and dementia, are considered. The objective of this article is to critically review key elements for the diagnosis of DSD, including the challenge of neuropsychological assessment in patients with dementia and the influence of particular tests used to diagnose DSD. To address the challenges of DSD diagnosis, we present a framework for guiding the focus of future research efforts to develop a reliable reference standard to diagnose DSD. A key feature of a reliable reference standard will improve the ability to clinically diagnose DSD in facility-based patients and research studies.
Author(s): Morandi A, Davis D, Bellelli G, Arora RC, Caplan GA, Kamholz B, Kolanowski A, Fick DM, Kreisel S, MacLullich A, Meagher D, Neufeld K, Pandharipande PP, Richardson S, Slooter AJC, Taylor JP, Thomas C, Tieges Z, Teodorczuk A, Voyer P, Rudolph JL
Publication type: Review
Publication status: Published
Journal: Journal of the American Medical Directors Association
Year: 2017
Volume: 18
Issue: 1
Pages: 12-18
Online publication date: 16/09/2016
Acceptance date: 02/04/2016
ISSN (print): 1525-8610
ISSN (electronic): 1538-9375
Publisher: Elsevier Inc.
URL: https://doi.org/10.1016/j.jamda.2016.07.014
DOI: 10.1016/j.jamda.2016.07.014
