Delirium Transitions in the Medical ICU: Exploring the Role of Sleep Quality and Other Factors

In this article, the authors evaluate the elusive link between delirium and sleep deprivation in 223 medical ICU patients over a 201 day period. Patient were also assessed for delirium on a regular basis. Using the Richards-Campbell Sleep Questionnaire, daily perceived sleep quality ratings were measured. Delirium was measured twice a day with the Confusion Assessment Method tool (CAM) for the ICU. In this study, perceived sleep quality was similar in ICU patients who developed delirium and those who did not. Additionally, perceived sleep quality was unrelated to delirium transition. This is another piece of work that fails to establish a link between delirium and sleep deprivation.

http://www.ncbi.nlm.nih.gov/pubmed/25230376