Purpose: To determine the effect of dexmedetomidine on the ED and ED of sufentanil in patient-controlled intravenous analgesia (PCIA) after cesarean section.
Patients And Methods: Parturients who underwent elective cesarean section (n = 80) were randomly assigned to either the sufentanil group (S group) or the dexmedetomidine-sufentanil combination group (DS group). Patients in the S group received a combination of sufentanil, 5 mg of tropisetron, and saline, whereas patients in the DS group were administered 1.5µg/kg of dexmedetomidine in addition to sufentanil, 5 mg of tropisetron, and saline. The ED and ED of sufentanil were determined by Dixon sequential method. We used probit regression to calculate the ED, ED, and 95% confidence intervals for sufentanil in each group.
Results: The ED and ED for sufentanil in the S group were 1.634 (95% CI: 1.476-1.810)µg/kg and 2.035 (95% CI: 1.841-3.312)µg/kg, respectively. The ED and ED for sufentanil in the DS group were 1.275 (95% CI: 1.187-1.353)µg/kg and 1.503 (95% CI: 1.406-1.824)µg/kg. The VAS scores with rest at t and with movement at t- t were lower in the DS group (< 0.05). The t-t Ramsay scores in the DS group were higher than those in the S group (< 0.05). The doses of sufentanil and tramadol were markedly reduced in the DS group, while the onset of first lactation occurred significantly earlier in the DS group (< 0.05). Compared with the S group, the DS group had a lower incidence of nausea, vomiting, and skin itching (< 0.05), and lower frequency of patient-controlled analgesia (PCA) episodes (< 0.05), and better postoperative pain satisfaction (< 0.05).
Conclusion: The 1.5µg/kg dexmedetomidine can significantly decrease the ED and ED of sufentanil in patient-controlled intravenous analgesia after cesarean section, provide good postoperative analgesia and sedation, and promote the earlier occurrence of first lactation.
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| http://dx.doi.org/10.2147/DDDT.S494162 | DOI Listing |
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