title: Open versus laparoscopic pyloromyotomy for hypertrophic pyloric stenosis: a systematic review and meta-analysis focusing on major complications.
abstract: BACKGROUND
  There is an ongoing debate about whether laparoscopic pyloromyotomy (LP) or open pyloromyotomy (OP) is the best option for treating hypertrophic pyloric stenosis (HPS). The aim of this study was to compare the results of both surgical strategies by means of a systematic review and meta-analysis of the available literature.
  
  
  METHODS
  A systematic search for randomized clinical trials (RCTs) comparing OP and LP was conducted. Studies were reviewed independently for quality, inclusion and exclusion criteria, and outcomes. Primary outcome was major postoperative complications (i.e., incomplete pyloromyotomy, perforation, and need for reoperation). Secondary outcomes were time to full feed, postoperative hospital stay, and any other postoperative complications.
  
  
  RESULTS
  Four RCTs with a total of 502 patients (OP 255, LP 247) fulfilled the inclusion criteria and were analyzed in this review. These trials showed an absolute incidence of major postoperative complications of 4.9% in the LP group. Meta-analysis showed that LP did not lead to significantly more major postoperative complications (ARR 3%, 95% CI -3 to 8%) than OP. The mean difference in time to full feed was significant (2.27 h, 95% CI -4.26 to -0.29 h) and the mean difference in postoperative hospital stay tended to be shorter (2.41 h, 95% CI -6.10 to 1.28 h), both in favor of LP.
  
  
  CONCLUSIONS
  So far, the major postoperative complication rate after LP for HPS is not substantially higher than after OP. Because time to full feed and postoperative hospital stay are at best a few hours shorter after LP than after OP, the laparoscopic technique might be acknowledged as the standard of care if the major postoperative complication rate is low. Hence, this laparoscopic procedure should preferably be performed in centers with pediatric surgeons with expertise in this procedure.
authors.affiliation: Department of Pediatric Surgery, Academic Medical Center, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands. m.w.oomen@amc.uva.nl
authors.forename: M W N
authors.initials: MW
authors.lastname: Oomen
authors.forename: L T
authors.initials: LT
authors.lastname: Hoekstra
authors.forename: R
authors.initials: R
authors.lastname: Bakx
authors.forename: D T
authors.initials: DT
authors.lastname: Ubbink
authors.forename: H A
authors.initials: HA
authors.lastname: Heij
mesh_terms: D004435:Eating / Q000502:physiology; D005260:Female; D006801:Humans; D010535:Laparoscopy / Q000009:adverse effects*; D007902:Length of Stay; D008297:Male; D011182:Postoperative Care; D011183:Postoperative Complications / Q000209:etiology* / Q000601:surgery; D046248:Pyloric Stenosis, Hypertrophic / Q000601:surgery*; D011708:Pylorus / Q000601:surgery*; D016032:Randomized Controlled Trials as Topic; D020127:Recovery of Function; D012086:Reoperation