This is a protocol for a Cochrane Review (Intervention). The objectives are as follows:
•To assess the efficacy of non-pharmacological interventions (Appendix 1) for sleep promotion in critically ill adult patients in the ICU by improving their sleep time, sleep quality, satisfaction or decreasing the risk of sleep disturbance, delirium, post-traumatic stress disorder (PTSD) and the length of ICU stay.
•To establish whether non-pharmacological interventions are safe and clinically effective in improving sleep quality and the end-point length of ICU stay in critically ill adult patients.
• To establish whether non-pharmacological interventions are cost effective.