The clinical survey of postoperative patient controlled analgesia on epidural anesthesia with ropivacaine

Objective To compare the clinical efficacy of three different concentrations of ropivacaine combined with morphine and granisetron on postoperative patient controlled analgesia by epidural anesthesia.Methods Ninety postoperative patients were randomly divided into three groups with 30 cases each.The patients in group Ⅰ received 0.25% ropivacaine,in group Ⅱ 0.20% ropivacaine,in group Ⅲ 0.125% ropivacaine.Each group combined with morphine(6μg/ml) and ciranisetron(0.03mg/ml).The patients controlled epidural analgesia(PCEA) continually infused of 2ml/h.Motor block(in limb) was assessed with Bromage scale.Results Visual analogue scales(VAS) were observed at 6,12,24 and 48h postoperatively.Pain score was higher in group Ⅲ than that in group Ⅰ and Ⅱ.Motor block by Bromage scale was higher in group Ⅰ than that in group Ⅱ and Ⅲ.Each group had no anesthetic complication.Conclusion PCEA by 0.20% ropivacaine combined with morphine and granisetron can provide a good postoperative analgesia and have no significant motor retarded.It is worth popularizing.