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![loading](/sites/all/modules/hf_eds/images/loading.gif)
ED50 and ED95 of propofol combined with different doses of esketamine for children undergoing upper gastrointestinal endoscopy: A prospective dose‐finding study using up‐and‐down sequential allocation method.
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![loading](/sites/all/modules/hf_eds/images/loading.gif)
- Author(s): Zheng, Xiao‐Su; Shen, Yang; Yang, Yan‐Yan; He, Pan; Wang, Yan‐Ting; Tao, Ying‐Ying; Zheng, Ji‐Jian; Sun, Ying
- Source:
Journal of Clinical Pharmacy & Therapeutics. Jul2022, Vol. 47 Issue 7, p1002-1009. 8p. - Source:
- Additional Information
- Subject Terms: PROPOFOL; DRUG efficacy; BLOOD pressure; HUMAN research subjects; CONFIDENCE intervals; HEALTH outcome assessment; RANDOMIZED controlled trials; INFORMED consent (Medical law); KETAMINE; BLIND experiment; DOSE-effect relationship in pharmacology; DESCRIPTIVE statistics; ENDOSCOPIC gastrointestinal surgery; STATISTICAL sampling; DRUG side effects; LONGITUDINAL method; PHARMACODYNAMICS
- Abstract: What is known and objective: Propofol and esketamine are routine anaesthetics used in sedation or general anaesthesia for paediatric procedures. Coadministration could reduce the dose of either propofol or esketamine required and lower the incidence of drug‐related adverse events. We designed a four‐arm randomized controlled trial in children undergoing diagnostic upper gastrointestinal endoscopy to investigate the dose of propofol with different doses of esketamine inducing appropriate depth of anaesthesia in 50% patients (median effective dose, ED50). Methods: After getting the approval of the research ethics committee and informed consent, 92 paediatric patients planning for upper gastrointestinal endoscopy were divided into four groups randomly: esketamine 0, 0.25, 0.5 and 1 mg/kg groups (n = 23/group). Propofol doses followed the Dixon and Massey up‐and‐down method with different starting and interval doses between groups. During the first attempt of endoscope insertion, if patients' reactions prevented the insertion, it would be considered as a failure. The awakening time, total propofol doses, as well as the perioperative and post‐procedure adverse events were evaluated and recorded for each patient. Results and discussion: The ED50 (median, 95% confidence interval) of propofol was significantly greater in esketamine 0 and 0.25 mg/kg groups in comparison with the esketamine 0.5 and 1 mg/kg groups (4.1 [3.3–4.9]; 3.1 [2.5–3.8] mg/kg vs. 1.8 [1.1–2.4]; 0.8 [0.2–1.3] mg/kg, respectively, p <.05). The total doses of propofol in esketamine 0.5 and 1 mg/kg groups were statistically lower than these in esketamine 0 and 0.25 mg/kg group (p <.01). The mean blood pressure was lower in the esketamine 0 mg/kg group than that in 1 mg/kg group after administration and during the procedure (p <.01). The esketamine 1 mg/kg group showed a higher incidence of vomiting and visual disturbances than the other three groups (p <.001). What is new and conclusion: In children who accomplished diagnostic paediatric upper gastrointestinal endoscopy under deep sedation/anaesthesia, the total dosage of propofol needed was reduced significantly in esketamine 0.5 and 1 mg/kg groups with a corresponding reduce in propofol‐related hemodynamic changes. However, a higher incidence of esketamine‐related adverse effects was found in esketamine 1 mg/kg group. [ABSTRACT FROM AUTHOR]
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