• J Clin Anesth · Dec 2021

    Randomized Controlled Trial

    Impact of opioid-free anaesthesia on postoperative nausea, vomiting and pain after gynaecological laparoscopy - A randomised controlled trial.

    • Christina Massoth, Judith Schwellenbach, Khaschayar Saadat-Gilani, Raphael Weiss, Daniel Pöpping, Mira Küllmar, and Manuel Wenk.
    • Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1, A1, 48149 Münster, Germany. Electronic address: Christina.Massoth@ukmuenster.de.
    • J Clin Anesth. 2021 Dec 1; 75: 110437.

    Study ObjectiveOpioid-free anaesthesia may enhance postoperative recovery by reducing opioid-related side effects such as nausea, hyperalgesia or tolerance. The objective was to investigate the impact of multimodal opioid-free general anaesthesia on postoperative nausea, vomiting, pain and morphine consumption compared to the traditional opioid-based approach.DesignThis study was conducted as a prospective parallel-group randomised controlled trial.SettingPerioperative Care.Patients152 adult women undergoing elective inpatient gynaecological laparoscopy.InterventionsPatients were randomly assigned for opioid-free anaesthesia (Group OF) with dexmedetomidine, esketamine and sevoflurane or to have opioid-based anaesthesia (Group C) with sufentanil and sevoflurane.MeasurementsPrimary outcome was the occurrence of nausea within 24 h after surgery. Patients were assessed for the incidence and severity of PONV, postoperative pain and morphine consumption and recovery characteristics.Main ResultsPatients in both groups had comparable clinical and surgical data. 69.7% of patients in the control group and 68.4% of patients in the opioid-free group met the primary endpoint (OR 1.06, 95% Confidence Interval (CI) (0.53; 2.12) p = 0.86). The incidence of clinically important PONV defined by the PONV impact scale was 8.1% (Group C) vs 10.5% (OF); p = 0.57). Antiemetic requirements, pain scores and morphine consumption were equivalent in both groups. Postoperative sedation was significantly increased in group OF (p < 0.001), and the median length of stay at the post-anaesthesia care unit was 69.0 min (46.5-113.0) vs 50.0 (35.3-77.0) minutes in the control group (p < 0.001).ConclusionsOpioid-free multimodal general anaesthesia is feasible but did not decrease the incidence of PONV, or reduce pain scores and morphine consumption compared to an opioid-containing anaesthetic regimen.Copyright © 2021 Elsevier Inc. All rights reserved.

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