The CAM-ICU-7 delirium severity scale is a valid, reliable, and practical delirium severity measure among ICU patients that can be easily calculated and is associated with meaningful clinical outcomes. This practical tool could improve the ability to correlate delirium severity with long-term complications, including cognitive impairment and healthcare resource utilization. Additionally, the CAM-ICU-7 may facilitate evaluation of delirium severity as an outcome of clinical trials attempting to reduce the burden of delirium in the ICU. Richmond Agitation-Sedation Scale (RASS)[14] and the CAM-ICU[13] were used to assess patients’ sedation and delirium respectively. Patients enrolled in the PMD trial and admitted to the ICU services of three Indianapolis hospitals.

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