Abstract
This meta-analysis aimed at exploring the impact of opioid-free anesthesia (OFA) on pain score and opioid consumption in patients undergoing bariatric surgery (BS). Literature search identified eight eligible trials. Forest plot revealed a significantly lower pain score (mean difference (MD) = − 0.96, p = 0.0002; 318 patients), but not morphine consumption (MD = − 5.85 mg, p = 0.1; 318 patients) at postoperative 24 h in patients with OFA than in those without. Pooled analysis also showed a lower pain score (p = 0.002), morphine consumption (p = 0.0003) in the postanesthetic care unit, and risk of postoperative nausea/vomiting (p = 0.0003) in the OFA group compared to the controls. In conclusion, this meta-analysis demonstrated that opioid-free anesthesia improved pain outcomes immediately and at 24 h after surgery without a beneficial impact on opioid consumption at postoperative 24 h.
Key points
• Roles of opioid-free anesthesia (OFA) in bariatric surgery (BS) were investigated.
• Outcomes included postoperative pain score, opioid use, and nausea/vomiting risk.
• OFA was associated with lower 24-h pain score but not opioid consumption.
• Lower pain score and opioid consumption were noted in the postanesthetic care unit.
• OFA correlated with a lower risk of postoperative nausea/vomiting.
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Conceptualization, K.-C.H. and C.-C.C.; methodology, C.-W.H.; software, C.-M.L.; formal analysis, I.-W.C.; data curation, S.-W.L. and I.-C.T.; writing—original draft preparation, K.-C.H., I.-W.C., and C.-K.S.; writing—review and editing, K.-C.H., I.-W.C., and C.-K.S. All authors have read and agreed to the published version of the manuscript.
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Hung, KC., Chiu, CC., Hsu, CW. et al. Impact of Opioid-Free Anesthesia on Analgesia and Recovery Following Bariatric Surgery: a Meta-Analysis of Randomized Controlled Studies. OBES SURG 32, 3113–3124 (2022). https://doi.org/10.1007/s11695-022-06213-7
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DOI: https://doi.org/10.1007/s11695-022-06213-7