The Effect of Anastomosis Gastro-Jejunostomy with Two Diameters of 30 and 45 mm on Mini-Gastric Bypass Surgery on Weight Changes in Obese Patients: A Clinical Trial Study

Obesity is one of the most common problems in community. Bariatric surgery is widely used to treat obesity. The aim of this study was compare the weight loss and body mass index (BMI) in obese patients undergoing single bariatric surgery with Single anastomosis gastric bypass (SAGB) with 3.5 mm linear stapler anastomosis with 30 mm and 45 mm diameters.

In a randomized clinical trial study in 2019 in Alzahra and Kashani hospitals in Isfahan, Iran, 80 patients undergoing gastric bypass surgery with an anastomosis with gastrojejunostomy with linear shear stapler were divided into two groups of 40. The first group underwent SAGB surgery with 30 mm for their diameter of gastrojejunostomy anastomosis, and in the second group, this diameter was considered 40 mm. Patients were followed for 6 months after surgery, and the amount of weight loss and BMI changes were determined and compared in two groups.

The mean decrease of BMI in gastrojejunostomy diameter of 30 and 45 millimeters was 12.79 ± 4.79 and 12.37 ± 5.37 kg/m2</sup>, and the decrease of BMI was significant in both groups (P < 0.001), but no significant difference were seen between the two groups (P = 0.71).

The results show that gastroesophageal anastomosis with both diameters of 30 and 45 mm reduce the weight of patients during the next six months of operation, and there is no difference between these two diameters of anastomosis.