<p>Impact of postoperative dexmedetomidine infusion on incidence of delirium in elderly patients undergoing major elective noncardiac surgery: a randomized clinical trial</p>

作者：Yuanyuan Sun, Ming‐Ming Jiang, Yunjing Ji, Yue Sun, Yao Liu, Wen Shen · 发表于：Drug Design Development and Therapy · 年份：2019 · DOI：10.2147/dddt.s208703 · 被引用次数：52 · 研究领域：Intensive Care Unit Cognitive Disorders、Anesthesia and Sedative Agents、Cardiac, Anesthesia and Surgical Outcomes

Purpose: Postoperative delirium is a serious and common complication, it occurs in 13–50% of elderly patients after major surgery, and presages adverse outcomes. Emerging literature suggests that dexmedetomidine sedation in critical care units (intensive care unit) is associated with reduced incidence of delirium. However, few studies have investigated whether postoperative continuous infusion of dexmedetomidine could safely decrease the incidence of delirium in elderly patients admitted to general surgical wards after noncardiac surgery. Patients and methods: This double-blind, randomized, placebo-controlled trial was conducted in patients aged 65 years or older undergoing major elective noncardiac surgery without a planned ICU stay. Eligible patients were randomly assigned to receive either dexmedetomidine (0.1 μg/kg/h) or placebo (0.9% normal saline) immediately after surgery though patient-controlled intravenous analgesia device. The primary outcome was the incidence of delirium during the first 5 postoperative days. Secondary outcomes included postoperative subjective pain scores and subjective sleep quality. The study dates were from January 2018 to January 2019. Results: A total of 557 patients were randomly assigned to receive either dexmedetomidine (n=281) or placebo (n=276). The incidence of postoperative delirium had no difference between the dexmedetomidine and placebo groups (11.7% [33 of 281] vs 13.8% [38 of 276], P =0.47). Compared with placebo group, patients ...