WEsleep Trial: Improving Sleep in Hospitalized Patients

In the WEsleep study, the investigators will perform a cluster randomized controlled trial. 3 surgical and 3 medical departments will be randomized to implement low-cost and simple interventions aimed at improving sleep in admitted patients. Another 3 surgical and 3 medical departments will be randomized to function as control groups. Subjective sleep quality and sleep-wake timing will be assessed in adult medical and surgical patients admitted into one of 12 participating wards, using questionnaires and a sleep diary.

Surgical: Patients admitted for elective surgery with planned overnight stay Medical:Patients admitted to the medical ward, with at least two expected nights of admissionInclusion Criteria:Surgical patients:Adult (18+) patientsUndergoing elective non-cardiac surgery with planned (post-operative) overnight stayWilling and able to provide informed consentAble to read and write in DutchMedical patients:Adult (18+) patients medical admission with expected stay of at least two nightsWilling and able to provide informed consentAble to read and write in DutchExclusion Criteria:Surgical patients: ASA score of 4 or higherAdmission on ICU-ward at any time during admission (both planned and unplanned, for both surgical and medical patients)Non-Dutch speakingStrict isolation (MRSA or aerogenic isolation)Pre-existing delirium or cognitive impairment