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The CAM-ICU-7 and ICDSC as measures of delirium severity in critically ill adult patients

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  • Karla D Krewulak
  • Brianna K Rosgen
  • E W Ely
  • Henry T Stelfox
  • Kirsten M Fiest

Abstract

Background: In clinical practice, a dichotomous approach to delirium identification may no longer be relevant when existing delirium screening tools measure a range of scores. The objective of this study was to compare the Confusion Assessment Method for the Intensive Care Unit 7-item (CAM-ICU-7) and the Intensive Care Delirium Screening Checklist (ICDSC) as measures of the spectrum of delirium severity in critically ill adult patients. Methods: In this cross-sectional study, 218 patients underwent 641 paired assessments by bedside nurses (ICDSC, as per usual care) and trained research assistants (CAM-ICU-7). Correlation between the CAM-ICU-7 and ICDSC scores was evaluated. Logistic regression was used to explore associations between CAM-ICU-7 or ICDSC score and length of ICU stay and mechanical ventilation (receipt, ≥96 hours). Results: Delirium prevalence evaluated by the CAM-ICU-7 and ICDSC were 46.3% (95% CI:39.7–53.0) and 34.4% (95% CI:28.3–41.0). Prevalence of less than clinical threshold symptoms of delirium evaluated by the CAM-ICU-7 (score: 1–2) and ICDSC (score: 1–3) were 30.3% (95%CI:24.5–36.7) and 50.9% (95%CI:44.3–57.6). The CAM-ICU-7 and ICDSC had significant positive correlation (0.58, p

Suggested Citation

  • Karla D Krewulak & Brianna K Rosgen & E W Ely & Henry T Stelfox & Kirsten M Fiest, 2020. "The CAM-ICU-7 and ICDSC as measures of delirium severity in critically ill adult patients," PLOS ONE, Public Library of Science, vol. 15(11), pages 1-15, November.
    • Handle: RePEc:plo:pone00:0242378
    DOI: 10.1371/journal.pone.0242378
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