• P Greig, A Sotiriou, P Kailainathan, C Y M Carvalho, D N Onwochei, N Thurley, and N Desai.
• Department of Anaesthesia, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom; Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom.
• J Clin Anesth. 2024 Aug 1; 95: 111468111468.

Study ObjectiveFollowing robot assisted abdominal surgery, the pain can be moderate in severity. Neuraxial analgesia may decrease the activity of the detrusor muscle, reduce the incidence of bladder spasm and provide effective somatic and visceral analgesia. In this systematic review, we assessed the role of neuraxial analgesia in robot assisted abdominal surgery.DesignSystematic review.SettingsRobot assisted abdominal surgery.PatientsAdults.InterventionsSubsequent to a search of the electronic databases, observational studies and randomized controlled trials that assessed the effect of neuraxial analgesia instituted at induction of anesthesia or intraoperatively in adult and robot assisted abdominal surgery were considered for inclusion. The outcomes of observational studies as well as randomized controlled trials which were not subjected to meta-analysis were presented in descriptive terms. Meta-analysis was conducted if an outcome of interest was reported by two or more randomized controlled trials.Main ResultsWe included 19 and 11 studies that investigated spinal and epidural analgesia in adults, respectively. The coprimary outcomes were the pain score at rest at 24 h and the cumulative intravenous morphine consumption at 24 h. Spinal analgesia with long acting neuraxial opioid did not decrease the pain score at rest at 24 h although it reduced the cumulative intravenous morphine consumption at 24 h by a mean difference (95%CI) of 14.88 mg (-22.13--7.63; p < 0.0001, I2 = 50%) with a low and moderate quality of evidence, respectively, on meta-analysis of randomized controlled trials. Spinal analgesia with long acting neuraxial opioid had a beneficial effect on analgesic indices till the second postoperative day and a positive influence on opioid consumption up to and including the 72 h time point. The majority of studies demonstrated the use of spinal analgesia with long acting neuraxial opioid to lead to no difference in the incidence of postoperative nausea and vomiting, and the occurrence of pruritus was found to be increased with spinal analgesia with long acting neuraxial opioid in recovery but not at later time points. No difference was revealed in the incidence of urinary retention. The evidence in regard to the quality of recovery-15 score at 24 h and hospital length of stay was not fully consistent, although most studies indicated no difference between spinal analgesia and control for these outcomes. Epidural analgesia in robot assisted abdominal surgery was shown to decrease the pain on movement at 12 h but it had not been studied with respect to its influence on the pain score at rest at 24 h or the cumulative intravenous morphine consumption at 24 h. It did not reduce the pain on movement at later time points and the evidence related to the hospital length of stay was inconsistent.ConclusionsSpinal analgesia with long acting neuraxial opioid had a favourable effect on analgesic indices and opioid consumption, and is recommended by the authors, but the evidence for spinal analgesia with short acting neuraxial opioid and epidural analgesia was limited.Copyright © 2023. Published by Elsevier Inc.

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