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Related Experiment Videos

Delirium and cognitive dysfunction in the intensive care unit.

Russell R Miller1, E Wesley Ely

  • 1Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA. russell.miller@vanderbilt.edu

Seminars in Respiratory and Critical Care Medicine
|June 23, 2006
PubMed
Summary

Delirium is a common but often unrecognized organ dysfunction in the intensive care unit (ICU). The Confusion Assessment Method for the ICU (CAM-ICU) tool reliably detects delirium and its severe consequences, guiding future research and interventions.

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Area of Science:

  • Critical Care Medicine
  • Neuroscience
  • Geriatrics

Background:

  • Delirium is a prevalent yet underrecognized form of organ dysfunction in intensive care units (ICUs).
  • Understanding risk factors for ICU delirium is crucial, with some being modifiable.
  • Recent advancements include validated tools for delirium detection at the bedside.

Purpose of the Study:

  • To highlight the significance of delirium as a critical care issue.
  • To discuss the utility of the Confusion Assessment Method for the ICU (CAM-ICU) in clinical practice.
  • To underscore the need for further research into delirium's risk factors, prevention, and treatment.

Main Methods:

  • Review of current literature on ICU delirium.
  • Adaptation and validation of the Confusion Assessment Method for the ICU (CAM-ICU).

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  • Analysis of delirium's sequelae, including mortality, cost, and cognitive impairment.

    • Main Results:

    • The CAM-ICU is a reliable bedside tool for detecting delirium in critically ill patients.
    • ICU delirium is associated with increased mortality, longer hospital stays, and long-term cognitive deficits.
    • Existing prevention and treatment strategies require further data to guide optimal pharmacological and non-pharmacological approaches.

    Conclusions:

    • Delirium is a significant contributor to poor outcomes in the ICU.
    • The CAM-ICU facilitates accurate delirium assessment and highlights its serious consequences.
    • Further research, including large cohort studies, is essential to refine delirium management and prevention strategies in critical care settings.