A systematic review of staple-line reinforcement in laparoscopic sleeve gastrectomy

Jean Knapps, Maher Ghanem, John Clements, Aziz M. Merchant

Research output: Contribution to journalArticlepeer-review

43 Scopus citations


Background and Objectives: Laparoscopic sleeve gas-trectomy is gaining popularity as a bariatric procedure, with outcomes similar to gastric band and gastric bypass. Staple-line disruption is a significant source of morbidity and death. We aim to evaluate the effect of staple-line reinforcement on the gastric leak rate, morbidity, and mortality rate. Methods: A systematic review was performed using title key words "sleeve gastrectomy," and articles were reviewed for description of operative technique and postoperative outcomes including staple-line leak. Rates of leak, bleeding, surgical-site infection, reintervention, re-admission, and mortality were analyzed. We calculated pooled event rates and 95% confidence intervals using fixed-effects modeling to determine differences between the reinforcement group (group A) and non-reinforcement group (group B). Results: We identified 390 articles, and 30 met the inclusion criteria. Group A had 3293 patients, and group B had 1588 patients. After heterogeneity calculations, 9 variables met the criteria to be analyzed. The leak rate was 3.9% (95% confidence interval, 2.9%- 5.5%) in group A and 3.2% (95% confidence interval, 2.8%-4.1%) in group B. The mortality rate was 0.8% (95% confidence interval, 0.4%-1.5%) in group A and 0.7% (95% confidence interval, 0.4%-1.1%) in group B. Our results also showed no statistical difference for any of our other 7 outcome variables. Conclusion: Our study shows a lack of statistical difference in leak rate, overall morbidity, or mortality rate in laparoscopic sleeve gastrectomy with or without sta-ple-line reinforcement. Because of study limitations, we propose that prospective trials are needed to determine the effect of staple-line reinforcement on leak rates.

Original languageEnglish
Pages (from-to)390-399
Number of pages10
JournalJournal of the Society of Laparoendoscopic Surgeons
Issue number3
StatePublished - 2013


  • Reinforcement
  • Sleeve gastrectomy
  • Staple line


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