ObjectiveTo compare the analgesic effects of transversus abdominis Plan(TAP)block using different concentrations of ropivacaine guided by ultrasound on children after hernia operation.

MethodsFifty children with hernia scheduled by operation from June 2016 to June 2017 were randomly were divided into the observation group(group L, 25 cases) and control group(group H, 25 cases).The group L was treated with TAP block using 0.250% ropivacaine, and the group H was dealed with 0.5 mL/kg of 0.375% ropivacaine in TAP block.The MAP, HR, anesthesia time, operation time, Face Leg Activity Crying Consolability(FLACC) scale score, effective analgesic time, and pressing time of pressure-relieving pump between two groups were compared before anesthesia, after laryngeal mask implantation, at 1 min before and after of skin resection and after surgery.

ResultsThe differences of MAP and HR between two groups before anesthesia, after laryngeal mask implantation, at 1 min before and after of skin resection were not statistically significant(P>0.05), and the MAP and HR in group L were higher than those in group H at the end of operation(P < 0.01 and P < 0.05).The differences of the operation time, FLACC scale score, postoperative effective analgesic time, and pressing time of pressure-relieving pump between two groups were not statistically significant(P>0.05), and the incidence rate of adverse reaction in group L(4.0%) was lower than that in group H(32.0%)(P < 0.05).

ConclusionsTAP nerve block using 0.250% ropivacaine at 0.5 mL/kg guided by ultrasound combined with intravenous analgesia pump can meet the need of postoperative analgesia, which has little adverse reaction and is a better choice in multiple mode analgesia.