Abstract:Objective To explore the effect of butorphanol and sufentanil in painless colonoscopy.Methods From January 2021 to January 2022, 200 patients with painless colonoscopy were selected and divided into sufentanil group (group S, 100 cases) and butorphanol group (group B, 100 cases) according to different anesthesia schemes. The vital sign parameters, the total dosage of propofol, the time of awakening and induction of anesthesia, the incidence of adverse reactions during and after operation, and the visual analogue scale (VAS) of 30 min after operation were compared between the two groups at different time points.Results On the T2 and T3 time points, the mean arterial pressure (MAP) and heart rate (HR) of the patients in the two groups were lower than those in the T1 time point, and showed a gradual decline, group B was higher than group S, and the decline trend was relatively slow (P < 0.05). There was no significant difference in MAP and HR between the two groups at T4 and T5 time points (P > 0.05). There was no significant difference in percutaneous arterial oxygen saturation (SpO2) between the two groups at each time point (P > 0.05). There was no significant difference between the two groups in total dosage of propofol, anesthesia recovery time and anesthesia induction time (P > 0.05). The incidence of intraoperative bradycardia, bucking, postoperative nausea and vomiting in group B were significantly lower than those in group S (P < 0.05); There was no statistically significant difference in the incidence of intraoperative hypotension, respiratory depression, body movement, postoperative drowsiness, and dizziness between the two groups (P > 0.05). The VAS after 30 minutes of postoperative awakening in Group B was lower than that in Group S, with a statistically significant difference (P < 0.05).Conclusion The application of butorphanol combined with propofol in painless colonoscopy is ideal, the anesthesia process is safe and stable, and can effectively reduce adverse reactions.