Abstract:Objective To investigate the effect of nalbuphine preventive analgesia on pain, recovery time, and extubation time after laparoscopic cholecystectomy.Methods Nighty patients underwent laparoscopic cholecystectomy under elective general anesthesia in our hospital were enrolled in our study. Patients were divided into three groups according to the random number table method, 30 cases in each group. Intravenous injection was administered 15 min before surgery: nalbuphine 0.1 mg/kg (N1 group), nalbuphine 0.2 mg/kg (N2 group) (each group dilute the drug with saline to 5 ml) or 5 ml of saline (NS group). We compared the recovery time, extubation time, Ramsay score after extubation and the NRS (Numerical Rating Score) on 2, 4, 8, 24, 48, and 72 h postoperatively between the three groups. The first rescue analgesia time, total rescue analgesia requirements and the adverse effects were also recorded.Results Compared with the controls, the patients of the N2 group showed significantly decreased in the recovery time and extubation time (P < 0.05). Compared with group NS, NRS (at rest and movement) of group N1, N2 were lower at 4, 8, 24, 48, 72 h postoperatively (P < 0.05). Group N2 showed lower NRS (at rest and movement) than group N1 at 4, 8, 24, 48, 72 h postoperatively. Compared with group NS, the first rescue analgesia time was significantly prolonged in the group N2 (P < 0.05), and the total amount of rescue analgesia requirements was significantly reduced (P < 0.05). The incidence of nausea and vomiting in the control group was significantly higher than that in the group N1 and the group N2 (P < 0.05).Conclusion Nalbuphine 0.1 mg/kg and nalbuphine 0.2 mg/kg preventive analgesia can effectively relieve pain in laparoscopic cholecystectomy (LC) patients with less adverse effects, and nalbuphine 0.2 mg/kg is more effective than nalbuphine 0.2 mg/kg.