• Caroline Maloney, Michelle Kallis, Ibrahim Abd El-Shafy, Aaron M Lipskar, John Hagen, and Michelle Kars.
• Department of Surgery, Hofstra Northwell School of Medicine, 300 Community Drive Manhasset, New York 11030.
• J. Pediatr. Surg. 2018 Mar 1; 53 (3): 431-436.

IntroductionDespite its minimally invasive approach, laparoscopic surgery can cause considerable pain. Regional analgesic techniques such as the rectus sheath block (RSB) offer improved pain management following elective umbilical hernia repair in the pediatric population. This effect has not been examined in laparoscopic single-incision surgery in children. We sought to compare the efficacy of bilateral ultrasound-guided RSB versus local anesthetic infiltration (LAI) in providing postoperative pain relief in pediatric single-incision transumbilical laparoscopic assisted appendectomy (TULA) with same-day discharge.MethodsWe retrospectively reviewed 275 children, ages 4 to 17 years old, who underwent TULA for uncomplicated appendicitis in a single institution from August 2014 to July 2015. We compared those that received preincision bilateral RSB (n=136) with those who received LAI (n=139). The primary outcome was narcotic administration. Secondary outcomes included initial and mean scores, time from anesthesia induction to release, operative time, time to rescue dose of analgesic in the PACU and time to PACU discharge.ResultsTotal narcotic administration was significantly reduced in patients that underwent preincision RSB compared to those that received conventional LAI, with a mean of 0.112 mg/kg of morphine versus 0.290 mg/kg morphine (p<0.0001). Patients undergoing RSB reported lower initial (0.38 vs. 2.38; p<0.0001) and mean pain scores (1.26 vs. 1.77; p<0.015). Time to rescue analgesia was prolonged in patients undergoing RSB compared to LAI (58.93min vs. 41.56min; p=0.047).ConclusionPreincision RSB for TULA in uncomplicated appendicitis in children is associated with decreased opioid consumption and lower pain scores compared with LAI. As the addition of this procedure only added 6.67min to time under anesthesia, we feel that it is a viable option for postoperative pain control in pediatric single-incision laparoscopic surgery.Retrospective Comparative StudyLEVEL III EVIDENCE.Copyright © 2017 Elsevier Inc. All rights reserved.

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