Introduction
postoperative pain, Sleep disturbance, anxiety
Sleep disturbance frequently occurs in elderly patients after surgery due to perioperative anxiety, stress and postoperative pain [Neuraxial anesthesia is commonly used for patients undergoing total joint arthroplasty [Present study was designed to investigate the effect of intraoperative remimazolam for sedation on sleep quality at surgery night in elderly patients after total joint arthroplasty. We hypothesized that intraoperative sedation with remimazolam could improve sleep quality at surgery night compared with routine care group.