Introduction
Postoperative sleep disturbance





Postoperative sleep disturbance (POSD) refers to the changes in sleep structure and quality of patients in the early postoperative period. POSD is mainly characterized by decreased rapid eye movement (REM) sleep, increased wake time, and fragmented sleep [In this double-blind randomized controlled study, different high doses of dexmedetomidine were administered nasally to patients having undergone maxillofacial surgery to compare their effects on the patients’ sleep on the first night after surgery.