Sleep is a fundamental physiological requirement for the human body to heal and overcome an illness or injury . Good sleep is essential for patient recovery and restoration of normal daily functions . Critically ill patients often experience poor sleep quality due to shortened sleep times, increased daytime sleep, and disrupted circadian rhythm . Poor sleep quality is one of the most common complaints of patients who survive their critical illness. Patients' complaints include trouble initiating and maintaining sleep and frequent awakenings with difficulty returning to sleep

Sleep plays an important role in restoring the health of individuals who are ill or injured and essential for critical illness recovery. Poor sleep quality during hospitalization may lead to post-hospital symptoms and increase readmission rates and mortality . Sleep disruption is associated with immune system dysfunction, decreased resistance to infection, changes in nitrogen balance, and impaired wound healing. Therefore, using a standardized non-pharmacological sleep promotion strategy as a sleep care bundle is proposed to reduce the incidence of delirium and improve sleep quality. Internationally, investigations performed to evaluate the effect of implementing sleep care bundle on patients' outcomes had reported its effectiveness. However, studies that addressed the effectiveness of implementing sleep care bundle on critical care nurses' practice and patients' outcomes in Egypt are scarce. Moreover, from our empirical observations, investigators found that there are no available standards of sleep care in the study setting. Furthermore, most nurses do not realize the importance of good sleep for critically ill patients. Therefore, the present study will be carried out to address this issue. Hopefully, the current investigation might generate attention and motivation for using this bundle and for conducting further research studies in this area.

Inclusion Criteria: Inclusion criteria

• Adult patients of ≥ 18 years old.
• Fully consciousness (Glasgow coma scale score 15; orientation to person, place, and time).
• Spent at least 3 full nights in the above-mentioned ICUs.

Exclusion Criteria:

History of sleep disorder as insomnia and sleep apnea.

• History of mental disorders.
• Patients who are on sedative or narcotic drugs.
• Patients who have visual or hearing impairment.
• History of skin diseases (e.g., contagious skin, eczema).