Abstract
Gastrojejunostomy stenosis after laparoscopic Roux-en-Y gastric bypass is a common occurrence. The incidence varies widely among reported series. We evaluated the impact of circular stapler size on the rate of stenosis and weight loss. Our initial technique utilized a 21-mm circular stapler to construct the gastrojejunostomy. We switched to a 25-mm stapler after a large preliminary experience. Stenosis was confirmed by endoscopy in patients complaining of the inability to eat or excessive vomiting, and was defined as a gastrojejunostomy diameter less than that of a therapeutic endoscope (11-mm). Stenosis occurred in 23 of 145 patients (15.9%) with a 21-mm gastrojejunostomy. Five of 81 patients with a 25-mm circular stapled anastomosis have developed a stenosis (6.2%, p = 0.03). Weight loss was similar for each sized stapler at 6 and 12 months. The use of a 25-mm circular stapler in laparoscopic gastric bypass is preferable to a 21-mm stapler. The larger stapler is associated with a significantly decreased incidence of gastrojejunostomy stenosis without compromising early weight loss.
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