Intravenous Oliceridine and Opioid-related Complications

Near the end of surgery, patients will be given ≤1.5 mg of oliceridine as a bolus. Postoperatively, patient-controlled analgesia (PCA) will be started with no background infusion, demand doses of 0.35 mg, with a 6 minute lock-out. Additional boluses (≤1 mg) of oliceridine will be given as deemed necessary (based on NRS score and clinical assessment of the patient) as soon as 15 minutes after the initial 1.5 mg loading dose. In addition to supplemental 1 mg bolus doses, the PCA demand dose can be increased to a maximum of 0.5 mg oliceridine.