• M Elizabeth Wilcox, Gordon D Rubenfeld, Karolina D Walczak, Sandra E Black, Mary Pat McAndrews, and Andrew S Lim.
• Department of Medicine (Critical Care Medicine), University Health Network, Toronto, Canada; Interdepartment Division of Critical Care Medicine, University of Toronto, Toronto, Canada. Electronic address: elizabeth.wilcox@mail.utoronto.ca.
• J Crit Care. 2019 Dec 1; 54: 163-169.

BackgroundThe purpose of this study was to use an objective measure to evaluate sleep quality on the ward after ICU discharge in survivors of critical illness.Materials And MethodsThis was a prospective cohort study of 94 patients admitted to a multidisciplinary intensive care unit (ICU) between December 2013 and June 2017. Adult patients received ≥3 days of mechanical ventilation. Sleep quality was measured using multi-night sleep actigraphy. Baseline sleep quality (i.e. sleep prior to hospitalization) was evaluated using the Pittsburgh Sleep Quality Index.ResultsA total of 65% of patients had poor sleep quality measured with the PSQI. The average (SD) sleep time and sleep efficiency was 6.03 h (3.70 h) and 44% (27%), respectively. An admission diagnosis of sepsis was associated with shorter total sleep time (TST; p = .03) and reduced sleep efficiency (SE; p = .04) as were severity of illness and duration of sedative exposure (p = .12 and 0.03; p = .09 and < 0.01; respectively for TST and SE). Weak correlations were seen between pro-inflammatory biomarkers and sleep quality.ConclusionsThis study highlights the important role that future interventions might have in patients at high-risk of sleep disorders after critical illness.Copyright © 2019. Published by Elsevier Inc.

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