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. Author manuscript; available in PMC: 2012 Mar 13.
Published in final edited form as: J Intensive Care Med. 2011 Jan 10;27(2):97–111. doi: 10.1177/0885066610394322

Figure 2.

Figure 2

Sleep fragmentation in 5 critically ill patients. Black areas represent sleep and white areas represent wakefulness. Reprinted with permission of the American Thoracic Society. Copyright © American Thoracic Society. Freedman NS, Gazendam J, Levan L, et al.30