Carbon Dioxide Versus Air Insufflation for the Application of Argon Plasma to Reduce the Gastrojejunal Anastomosis

Carbon dioxide will be used as an insufflating gas during argon fulguration of the dilatated anastomosis.

Ambient air will be used as an insufflating gas during argon fulguration of the dilatated anastomosis.

The dilatated anastomosis from the gastric bypass surgery will be reduced in diameter using fulguration with argon. Patient in both groups will be placed in the left lateral decubitus position, with anesthesia being performed exclusively using propofol; adequate cardiopulmonary monitoring will be carried out during the entire procedure. After sedation, endoscopy will be performed with an Olympus CV-180 endoscope (Olympus, Tokyo, Japan) and analysis and measurement of the anastomosis will be achieved using Raptor foreign body forceps (Endoscopy Group US, Inc., Mentor - Ohio, USA). The images will be transferred to an Olympus EvisExera II processor connected to a computer with the ZScan 5 program (Goiânia, GO, Brazil).