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Updated: Jul 29, 2025

Roux-en-Y Gastric Bypass Operation in Rats
Published on: June 11, 2012
Factors Associated with Weight Loss After Endoscopic Transoral Outlet Reduction (TORe)
Matthew H Meyers1, Eric C Swei1, Wyatt Tarter2
1Division of Gastroenterology and Hepatology, University of Colorado Anschutz Medical Center, Aurora, CO, USA.
Endoscopic transoral outlet reduction (TORe) can help with weight regain after gastric bypass. Pouch length and suture number positively impact weight loss, while depression is negatively associated.
Area of Science:
- Bariatric surgery
- Endoscopic procedures
- Weight management
Background:
- Endoscopic transoral outlet reduction (TORe) is a viable option for weight regain post-Roux-en-Y Gastric Bypass (RYGB).
- Predictors of successful weight loss following TORe require further elucidation.
Purpose of the Study:
- To investigate procedural and patient factors influencing percent total body weight loss (%TBWL) after TORe.
- To identify key variables associated with weight loss outcomes in patients undergoing TORe.
Main Methods:
- Retrospective cohort study of 51 patients who underwent TORe.
- Primary outcomes: %TBWL at 6 and 12 months.
- Evaluated procedural factors: suture pattern, gastric pouch sutures, anastomosis diameter, and pouch length.
Main Results:
- Weight loss averaged 11.3% at 6 months and 12.2% at 12 months.
- Increased pouch length and number of sutures correlated with %TBWL.
- Depression was negatively associated with %TBWL.
Conclusions:
- Pouch length and suture count are significant procedural factors for weight loss after TORe.
- Patient factors, such as depression, can negatively impact weight loss outcomes.
- Further research is warranted to fully understand the multifactorial nature of TORe success.
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