Ropivacaine을 이용한 소구개신경차단이 편도절제술환자의 통증에 미치는 효과
The Effect of Lesser Palatine Nerve Block on Pain after Pediatric Tonsillectomy
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Abstract
Background and Objectives：This prospective, randomized double-blind study was performed to evaluate the analgesic effectof lesser palatine nerve block after pediatric tonsillectomy, and we measured analgesic efficacy and degree of blocks induced byropivacaine. Subjects and Method：Children who weighed 20-40 kg and scheduled for an elective tonsillectomy were randomizedinto three groups. Patients received lesser palatine nerve block, using divided doses of 0.05 ml/kg of 0.2% ropivacaine(Naropin), 5 min prior to the beginning of tonsillectomy (Pre-block group) or immediately after surgery (Post-block group).Patients allocated into the control group did not receive any nerve blocks. Postoperative pain was measured immediately aftersurgery and at 3, 6, 12 and 24 hours following the operation by using a 0 to 4 points pain scale, based on a facial expression ofpain scale ruler. Side effects and the number of analgesic inductions were observed for 24 hours postoperatively. Results：Nosignificant differences in the pain scores were observed immediately after surgery and at 3, 6, 12 and 24 hours after operation inthe three group (p>0.05). The number of analgesic injections were similar in the groups. Conclusion：The results of this studyreveal that the lesser palatine nerve block was not effective for postoperative pain control following pediatric tonsillectomy, andthat the pre-emptive block offered no pain control benefit over the postoperative block. Therefore, we do not recommend lesserpalatine nerve blocks for the management of postoperative pain after pediatric tonsillectomy. (Korean J Otolaryngol 2006;49:824-8)
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