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Background In clinical practice, sufentanil has a stronger sedative effect on patients than fentanyl at equivalent doses. This study hypothesized that, at equivalent doses, patients undergoing gynaecologic laparoscopic surgery (GLS) receiving fentanyl would have an earlier emergence from anaesthesia (EA), a shorter time to extubation (TE), and a better degree of wakefulness. Therefore, this study evaluated the effects of equipotent doses of fentanyl and sufentanil on the quality of emergence in patients undergoing GLS.  Methods One hundred seven patients scheduled for GLS under general anaesthesia were randomly divided into two groups and were induced with 0.35 µg/kg sufentanil (Group S;  n  = 55) or 3.5 µg/kg fentanyl (Group F;  n  = 52). When the GLS was almost over, the patient's abdominal cavity was flushed with warm saline, and 5 µg of sufentanil or 50 µg of fentanyl in a double-blind manner was intravenously injected into the patients. The primary outcomes of the study included EA, TE, the rate of leaving the surgical bed voluntarily and the incidence of endotracheal tube tolerance. The Ramsay Sedation Scale (RSS), and Verbal Rating Scale (VRS) scores at 15 and 30 min in the postanaesthesia care unit (PACU), as well as other adverse events, including nausea and vomiting, itching, delirium, dizziness, chills, and respiratory depression (SpO 2  &lt; 95%) in the PACU, were evaluated as secondary outcomes. Results There were no statistically significant dissimilarities between the two groups with respect to baseline characteristics. For recovery, the EA (9.0 ± 4.8 min vs. 8.9 ± 3.0 min;  P  = 0. 146), TE (9.5 ± 4.7 min vs. 9.0 ± 3.0 min;  P  = 0.135), rate of leaving the surgical bed voluntarily (31.18% vs. 38.46%;  P  = 0.976), and incidence of endotracheal tube tolerance (94.55% vs. 96.15%;  P  = 0.694) were not significantly different between the two groups. In the PACU, the 15-min RSS score (2.07 ± 0.38 vs. 2.15 ± 0.36;  P  = 0.125), the 30-min RSS score (2.02 ± 0.13 vs. 2.04 ± 0.19;  P  = 0.207), the 15-min VRS score (0.50 ± 0.57 vs. 0.67 ± 0.55;  P  = 0.295), and the 30-min VRS score (0.45 ± 0.50 vs. 0.75 ± 0.52;  P  = 0.102) were not significantly different between Groups S and F. No adverse events, such as nausea, vomiting, pruritus, delirium, and tremors, occurred in either group. The rates of respiratory depression (1.82% vs. 1.92%;  P  = 0.968) and dizziness (0.00% vs. 4.85%;  P  = 0.142) were not different between Groups S and F in the PACU. Conclusions The majority of patients scheduled for GLS were able to rapidly and smoothly emerge from anaesthesia. After surgery, similar outcomes, including EA, TE, the incidence of endotracheal tube tolerance, the rate of leaving the surgical bed voluntarily, RSS scores, VRS scores, and adverse events in the PACU, were achieved for the patients between the two anaesthetic protocols.

bmc anesthesiology

Effect of additional equipotent fentanyl or sufentanil administration on recovery profiles during propofol-remifentanil–based anaesthesia in patients undergoing gynaecologic laparoscopic surgery: a randomized clinical trial