Intensive Care Unit Patients’ Perception of Sleep Quality and Factors of Sleep Disruption: Cross-sectional Study

There are several causes of sleep deprivation, which is a common problem among patients in the Intensive Care Unit (ICU) [1]. Cicek et al. [2] conducted a study in Coronary Intensive Care Units (CICU) on 100 patients using Freedman et al.’ s sleep quality questionnaire. The results showed that lighting, nurses’ intervention, and drawing of blood samples are the most disruptive activities in the CICU. Naik et al. [3] conducted a cross-sectional study using Richards–Campbell sleep questionnaire, and results showed poor sleep quality in 15 of the 32 patients included in the study. They also showed that age, patient’s physiology, and chronic health were related to sleep quality. Meanwhile, Zhang et al. [4] conducted a cross-sectional study using the Pittsburgh sleep quality index on 152 thoracic surgery patients in the ICU; they reported that around 46.1% of the patients reported poor sleep quality.