• BMC anesthesiology · Nov 2024

    Meta Analysis

    Effect of esketamine on postoperative delirium in general anesthesia patients undergoing elective surgery: a meta-analysis of randomized controlled trials.

    • Wenhui Zhang, Di Wang, Siru Li, Yutao Chen, and Congjie Bi.
    • Department of Anesthesiology, Central Hospital of Dalian University of Technology, No. 826 Southwest Road, Shahekou District, Dalian, Liaoning Province, China.
    • BMC Anesthesiol. 2024 Nov 28; 24 (1): 442442.

    BackgroundPostoperative delirium is a common neurological complication, especially in older patients undergoing surgery, which is closely related to the poor prognosis of patients. The objective was to investigate the effects of esketamine on postoperative delirium in patients with general anesthesia.MethodsThe databases of PubMed, Embase, Cochrane Library and the Chinese National Knowledge Infrastructure were searched for all available randomised controlled trials on the effects of esketamine induction on postoperative delirium in patients undergoing elective general anesthesia from inception until April 21, 2024. We used RevMan5.4 software for data analysis. Dichotomous data was analyzed by risk ratios(RR) with a 95% confidence interval(CI), and continuous data by mean differences(MD). We also evaluated the risk of literature bias using the Cochrane Bias Risk Assessment tool.ResultsWe included a total of 17 randomized controlled trials, including 1286 patients undergoing elective general anesthesia. In 17 studies, esketamine significantly reduced the incidence of postoperative delirium (RR: 0.43; 95%CI: 0.33 ~ 0.57; p < 0.001). Five studies examined the incidence of postoperative adverse events (nausea, vomiting, dizziness and resporatory depression) and showed no statistically significant difference between the esketamine group and the control group (normal saline or dexmedetomidine) (RR: 0.82; 95%CI: 0.65 ~ 1.03; p = 0.08). In addition, this study found that the esketamine group had a lower incidence of hypotension (RR: 0.24; 95%CI: 0.12 ~ 0.48; p < 0.001) and a lower score on the visual analogue scale 24 h after surgery (MD: -0.44; 95%CI: -0.54 ~ -0.33; p < 0.001).ConclusionAccording to our meta-analysis, the use of esketamine during anesthesia induction significantly reduced the incidence of postoperative delirium in patients undergoing elective general anesthesia without increasing the incidence of postoperative adverse reactions.© 2024. The Author(s).

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