Fang Manqing，Huang Yuguang

    Department of Anethesia，Maternal and Child Health Care Hospital，Nanshan District，Shenzhen518052.

    【Abstract】 Objective To evaluate the safety and effectiveness of three different local anesthetics such as0.0825%ropivacaine，0.1%ropivacaine，and0.1%bupivacaine for patient-controlled walking epidural labor analˉgesia.Methods 400full term pregnancy women，ASAⅠ-Ⅱwere randomly allocated into three groups with differˉent anesthetics:group A(n=100)with0.0825%ropivacaine plus1.5μg/ml fentanyl;group B(n=100)with0.1%ropivacaine plus1.5μg/ml fentanyl;group C(n=100)with0.1%bupivacaine plus1.5μg/ml fentanyl;and group D(n=100)without labor analgesia as control group.The initial dose for labor analgesia was10ml in experiˉmental groups.Epidural continuous infusion rate was6-8ml/h.Patient-controlled analgesia(PCA)bolus was2ml and PCA lockout time was15minutes with electric PCA pump.Results Satisfactory analgesia was provided to the women in all three groups without side effects such as prolonged labor ......