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Abstract

Background:Sleep amongst intensive care patients is reduced and highly fragmented which may adversely impact on recovery. The current challenge for Intensive Care clinicians is identifying feasible and accurate assessments of sleep that can be widely implemented. The objective of this study was to investigate the feasibility and reliability of a minimally invasive sleep monitoring technique compared to the gold standard, polysomnography, for sleep monitoring.Methods:Prospective observational study employing a within subject design in adult patients admitted to an Intensive Care Unit. Sleep monitoring was undertaken amongst minimally sedated patients via concurrent polysomnography and actigraphy monitoring over a 24-h duration to assess agreement between the two methods; total sleep time and wake time.Results:We recruited 80 patients who were mechanically ventilated (24%) and non-ventilated (76%) within the intensive care unit. Sleep was found to be highly fragmented, composed of numerous sleep bouts and characterized by abnormal sleep architecture. Actigraphy was found to have a moderate level of overall agreement in identifying sleep and wake states with polysomnography (69.4%; K = 0.386, p Conclusions:Actigraphy was easy and safe to use, provided moderate level of agreement with polysomnography in distinguishing between sleep and wakeful states, and may be a reasonable alternative to measure sleep in intensive care patients.

Item Type:	Article
Authors/Creators:	Delaney, LJ and Litton, E and Melehan, KL and Huang, H-CC and Lopez, V and Van Haren, F
Keywords:	sleep, intensive care, polysomnography, actigraphy, sleep quality, sleep disturbance
Journal or Publication Title:	Critical Care
Publisher:	Biomed Central Ltd
ISSN:	1466-609X
DOI / ID Number:	10.1186/s13054-020-03447-8
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