Conclusions The epidural labor analgesia of ropivacaine is enhanced by additional fentanyl 1-3 μg·ml-1. Fentanyl at concentration of 1-2 μg·ml-1 enhances analgesic effect of epidural ropivacaine with less side-effect.
One patient in each group had PONV. Conclusion The EC50 of ropivacaine was 0.059% when combined with 0.4μg·ml-1 sufentanil and was 0.054% when combined with 0.6μg·ml-1 sufentanil for epidural labor analgesia.
Conclusion:Fentanyl and bupivacaine provide a better pain relief in delivery analgesia. The suitable range of concentration of fentanyl should be from 0 0008% to 0 001%.
Methods 88 ASA Ⅰ Ⅱ primiparous with a full term singleton fetus in the vertex presentation were selected in this study,48 primiparous who were voluntary to labour analgesia were randomly divided into 4 groups:(1)ropivacaine 0 2%(R);
Conclusions: CSEA and N2O inhalation can be applied in labour analgesia, relieving labour pain, decreasing labour duration, not influencing other labour factors.
At delivery, the concentration of β-EP is significantly increased, however decreased greatly after delivery, which indicated that β-EP took part in the labour analgesia.
Forty-four pregnant women, who had a cervical dilatation of ≥7 cm, cervical effacement of ≥80%, no contraindication for labor analgesia ASA I-II, 20-31 years old were included in our study.