Abstract

Morbid obesity surgery has increased by 450 per cent in the past decade. Preferred surgical techniques have also changed, and since 2014, the most common surgical procedure worldwide has been laparoscopic sleeve gastrectomy (LSG). The most serious complication of this surgery is staple-line leaks, which leads to significant increases in cost and a considerable rate of mortality. This study aimed to investigate the effects of staples used in LSG on the development of staple-line leaks. The sample of the study comprised 70 patients that consecutively underwent surgery at Dokuz Eylül University Hospital between March 2014 and June 2015. The patients were divided into two equal groups. For the first group, resection was performed using blue-green EndoGIA™ cartridges (BGC) (Medtronic, Norwalk, CT). In the other group, purple Tri-Staple™ cartridges (TSC) (Medtronic) were used. To examine the effect of the cartridge type, the point and pressure of leak was determined from fresh specimens following saline infusion. No statistically significant difference was found between the two groups in terms of mean age, body mass index, gender distribution or comorbidity. The median number of cartridges used was five in both groups. The resistance of the staple line to intragastric pressure was found to be significantly higher in the TSC group compared with the BGC group [51.94 (±18.34) mmHg and 39.77 (±17.09) mmHg, respectively, P = 0.005]. Most applications undertaken to reduce the risk of leak development in LSG aim to reinforce the staple line. There are very few studies that investigated the quality of staple line, and none examined the effect of staple cartridges on the development of leaks. Therefore, we conducted this study to fill this gap in the literature. The results revealed that tissue thickness cartridge compatibility had a role in the development of leaks during the resection of gastric tissue in which the thickness is reduced from the distal to the proximal portion. We conclude that during vertical sleeve gastrectomy, using TSC that are compatible with a wider range of tissue thickness results in more durable staple lines than EndoGIA™ cartridges.

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