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Updated: May 28, 2026
07:37
Roux-en-Y Gastric Bypass Operation in Rats
Published on: June 11, 2012
Weight loss eight years after gastric bypass
Antonio Carlos Valezi1, Jorge Mali Junior, Mariano de Almeida Menezes
1Department of Surgery, Hospital Universitário da Universidade Estadual de Londrina, Paraná, Brazil. valezi@sercomtel.com.br
Revista Do Colegio Brasileiro De Cirurgioes
|October 6, 2011
Summary
Banded Roux-en-Y gastric bypass effectively promotes long-term weight loss. This bariatric surgery shows sustained results over eight years with a low failure rate.
Area of Science:
- Bariatric surgery
- Obesity treatment
- Surgical outcomes
Background:
- Obesity is a significant global health concern requiring effective long-term management strategies.
- Roux-en-Y gastric bypass is a common bariatric procedure, but its long-term effectiveness with modifications like banding requires evaluation.
Purpose of the Study:
- To assess the long-term effectiveness of banded Roux-en-Y gastric bypass in promoting and sustaining significant weight loss.
- To determine the failure rate of this bariatric procedure over an eight-year follow-up period.
Main Methods:
- A longitudinal, prospective, and descriptive study was conducted on 211 obese patients.
- Patients underwent Roux-en-Y gastric bypass with banding.
- Weight loss was analyzed by excess weight percentage and Body Mass Index (BMI), with failure defined as <50% excess weight loss.
Main Results:
- Follow-up data from 134 patients (63.5% retention rate) were analyzed.
- Sustained average excess weight loss ranged from 66.8% ± 7.6% at eight years.
- A low surgical treatment failure rate of 7.1% (15 patients) was observed over the study period.
Conclusions:
- Banded Roux-en-Y gastric bypass is an effective bariatric surgery for achieving and maintaining substantial weight loss.
- The procedure demonstrates a favorable long-term safety profile with low rates of treatment failure.
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