Background: The aim of this study was to investigate the appropriate dose of ropivacaine in efficacy and safety when administered for ilioinguinal/iliohypogastric nerve block in children undergoing inguinal herniorrhaphy.
Methods: Forty six children (aged 1-8 yr, classified ASA I-II) undergoing ambulatory surgery for inguinal herniotomy were randomly assigned to one of the three groups, according to the dosage of ropivacaine: group I (n = 15), group II (n = 16) and III (n = 15) received 1.875, 0.9375 and 0.5625 mg x kg(-1) of ropivacaine, respectively. Intraoperative hemodynamics and modified CHEOPS score at 1, 3 and 5 hours after operation were recorded.
Results: There were no significant differences among the three groups in the intraoperative hemodynamics, whereas postoperative modified CHEOPS scores were significantly higher in group III than the other groups. Trivial femoral nerve palsy occurred in one patient of the group II, and no other adverse effects were seen in any groups.
Conclusions: These results suggest that more than 0.9375 mg x kg(-1) of ropivacaine might be recommended to obtain sufficient postoperative analgesia for the ilioinguinal/iliohypogastric nerve block in children undergoing inguinal herniorrhaphy.
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