Operative Procedure
thromboembolic
ANASTOMOTIC LEAK, PNEUMOPERITONEUM
Preoperatively, the thromboembolic prophylaxis was ensured by subcutaneous low-molecular-weight heparin and compressive stocking. The surgical procedures were conducted as standardized under general anesthesia. In summary, pneumoperitoneum was induced, and then five trocars were inserted in the upper abdomen in a diamond-shaped pattern.In the OAGB group, the gastric pouch was created. After identifying the Treitz ligament, a BPL length of 200 cm was created. A vertical or slightly oblique omega-loop, isoperistaltic, ante-colic, and side-to-side 30-mm gastrojejunostomy was performed.In the RYGB group, an ante-colic ante-gastric RYGB procedure was performed laparoscopically on all patients. A 150-cm BPL was created and anastomosed side to side with the gastric pouch and pulled up in a connected ante-colic fashion. A 30-mm gastrojejunostomy was formed. Along the mesenteric border, the alimentary limb (AL), which was 75 cm long, was measured, and the entero-enterostomy was executed. Therefore, 225 cm of the small intestine was excluded.A methylene blue test was used intraoperatively in both groups to check for any anastomotic leak. In some circumstances, a tube drain was retained.