Exploration of Perioperative Sleep Disturbance in 208 Patients Undergoing Non-Cardiac Surgery: Protocol for a Prospective Cohort Study

Background: Sleep disorder is a common complication for postoperative patients, which can impact their recovery and prog-nosis. In the perioperative period of non-cardiac surgery, multiple factors can be involved in abnormal sleep in patients, including changes in sleep quality and quantity. Thus, the purpose of this study is to explore the inci-dence of postoperative sleep disturbance and related influencing factors in 208 patients undergoing non-car-diac surgery. Material/Methods: This is a single-center prospective cohort study including 208 eligible patients who will undergo non-cardiac surgery. All participants will implement the assessment and monitoring of perioperative sleep quality using the Pittsburgh Sleep Quality Index (PSQI) and a wearable electroencephalogram (EEG) sleep monitor on the night before surgery and on the first, third, and fifth nights after surgery (the first night is the day of surgery). Meanwhile, we will collect the patient's basic information, past history, and surgery-related data from the hos-pital electronic medical record and will perform follow-up before and after surgery. Results: The primary outcome is the occurrence of sleep disturbance on the first, third, and fifth nights after surgery. The secondary outcomes are the factors related to sleep disturbance and changes in sleep structure on the first, third, and fifth nights after surgery. Conclusions: This study will record the incidence of postoperative sleep disturbance, explore the risk factors of postopera-tive sleep disturbance, and clarify the change of postoperative sleep structure, which will provide ideas for cli-nicians to manage patients' sleep disturbance during the perioperative period.