• Matthew Cunningham-Hill, Michael Mazzei, Huaqing Zhao, Xiaoning Lu, and Michael A Edwards.
• Department of Surgery, Division of Minimally Invasive and Bariatric Surgery, Temple University Hospital, Parkinson Pavilion Suite 410, 3401, North Broad Street, Philadelphia, PA, 19140, USA.
• Obes Surg. 2019 Aug 1; 29 (8): 2449-2463.

IntroductionStaple line reinforcement (SLR) is a commonly used technique during laparoscopic sleeve gastrectomy (SG) for severe obesity. There remains controversy over the potential benefit or risk associated with SLR. There are currently no consensus recommendations about SLR use. Its use is surgeon-dependent and remains controversial.Study AimTo determine the impact of staple line reinforcement on staple line leak and bleeding rates after sleeve gastrectomy.MethodsUsing the Metabolic and Bariatric Surgery Quality Improvement Program Participant User File (MBSQIP-PUF) database, we identified patients who had a SG in 2015 and 2016. SLR utilization status was used to create two cohorts. An unmatched cohort analysis was performed, and the outcomes were compared. A propensity score and case-control matched cohort analysis were then performed, and the outcomes were compared. Statistical analysis was performed with SPSS and SAS.ResultsOf the 189,173 SG cases identified, SLR utilization was noted in 127,521 (67.4%). In the unmatched analysis, bleeding and reoperation were significantly higher in the cohort without SLR utilization. In both propensity score and case-control matched analysis, bleeding and reoperation remained significantly higher in the cohort without SLR utilization. There was no difference in mortality and staple line leak rates between the cohorts.ConclusionsSLR significantly reduces bleeding and reoperation rates following SG and has no deleterious impact on staple line leak rate. While further prospective studies factoring in the SLR method and staple characteristics are needed, this large database analysis supports the use of routine SLR during SG to reduce the risk of perioperative bleeding and reoperation.

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