• Po-Yi Paul Su, Alec Peniche, Elle Clelland, Michael Ladd, Adrian Delgado, Lee-Lynn Chen, Claas Siegmueller, Mark Latronica, Ramana Naidu, Pedram Aleshi, and Matthias Behrends.
• University of California San Francisco, United States of America. Electronic address: paul.su@ucsf.edu.
• J Clin Anesth. 2020 Apr 28; 64: 109850109850.

Study ObjectiveFew studies have compared continuous epidural infusion (CEI) against programmed intermittent epidural bolus (PIEB) epidural analgesia after major abdominal surgery. It has not been established whether the modality of epidural medication administration affects postoperative pain and other patient outcomes. The goal of this study was to compare the efficacy of PIEB against CEI in postoperative pain management after a broad range of surgeries with abdominal incisions, all managed in the context of an established enhanced recovery after surgery (ERAS) pathway.DesignProspective, randomized, controlled trial.SettingPostoperative acute care.Patients120 patients scheduled for major surgery involving abdominal incisions with planned postoperative epidural analgesia were enrolled as study participants.InterventionsAll subjects received a standardized epidural solution containing ropivacaine 0.0625% and fentanyl 2 μg/ml. The CEI group received this solution as a continuous infusion, while the PIEB group received this solution as programmed intermittent boluses.MeasurementsThe primary study outcome was the total local anesthetic used over the first 24 h post-operatively. Secondary outcomes included pain severity, pain interference, total opioid consumption, patient satisfaction, and adverse effects at 24, 48, and 72 h postoperatively.Main ResultsThere was no difference in the primary outcome of total amount of local anesthetic administered in the first 24-hour postoperative period (PIEB: 123 mg [Interquartile Range (IQR): 114-136]; CEI: 126 mg [IQR: 120-134]). There were also no differences in average pain severity, total opioid consumption, patient satisfaction, number of PCEA requests and incidence of adverse events at 24, 48, and 72 h postoperatively.ConclusionsOur study suggests that within the context of an established ERAS program, PIEB and CEI modes of epidural analgesia can be equally efficacious and safe in providing postoperative analgesia after major abdominal surgery.Copyright © 2020 Elsevier Inc. All rights reserved.

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