A Dedicated Acute Pain Service Is Associated With Reduced Postoperative Opioid Requirements in Patients Undergoing Cytoreductive Surgery With Hyperthermic Intraperitoneal Chemotherapy

BACKGROUND: The Acute Pain Service (APS) was initially introduced to optimize multimodal postoperative pain control. The aim of this study was to evaluate the association between the implementation of an APS and postoperative pain management and outcomes for patients undergoing cytoreductive surgery with hyperthermic intraperitoneal chemotherapy (CRS-HIPEC). METHODS: In this propensity-matched retrospective cohort study, we performed a before-after study without a concurrent control group. Outcomes were compared among patients undergoing CRS-HIPEC when APS was implemented versus historical controls (non-APS). The primary objective was to determine if there was a decrease in median total opioid consumption during postoperative days 0–3 among patients managed by the APS. Secondary outcomes included opioid consumption on each postoperative day (0–6), time to ambulation, time to solid intake, and hospital length of stay. RESULTS: After exclusion, there were a total of 122 patients, of which 51 and 71 were in the APS and non-APS cohort, respectively. Between propensity-matched groups, the median (quartiles) total opioid consumption during postoperative days 0–3 was 27.5 mg intravenous morphine equivalents (MEQs) (7.6–106.3 mg MEQs) versus 144.0 mg MEQs (68.9–238.3 mg MEQs), respectively. The median difference was 80.8 mg MEQs (95% confidence interval, 46.1– 124.0; P 50%, as well as shorter time to ambulation and time to solid intake. Implementation of an APS may improve outcomes in CRS-HIPEC patients. This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. Accepted for publication February 2, 2018. E. T. Said and J. F. Sztain contributed equally to this manuscript. Funding: None. Conflicts of Interest: See Disclosures at the end of the article. This work has been presented, in part, as an oral presentation at the Enhanced Recovery After Surgery US Conference, November 10, 2017, Dallas, TX. Reprints will not be available from the authors. Address correspondence to Engy T. Said, MD, Department of Anesthesiology, University of California, 200 W Arbor Dr, MC 8770, San Diego, CA 92103. Address e-mail to esaid@ucsd.edu. © 2018 International Anesthesia Research Society

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