Revisional Laparoscopic One Anastomosis Gastric Bypass for Weight Loss Failure after Restrictive Procedures
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By
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Hossam S Abdelrahim
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Ahmed Elnabil-Mortada
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Wadie Boshra Gerges
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Haitham M. Elmaleh
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July 6, 2026
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Clinical Scorecard: Laparoscopic One Anastomosis Gastric Bypass as a Revision for Weight Loss Failure Following Restrictive Surgical Interventions
At a Glance
| Category | Detail |
| Condition | Obesity and weight loss failure after restrictive bariatric surgery |
| Key Mechanisms | Conversion from restrictive procedures to OAGB for improved weight loss and comorbidity resolution |
| Target Population | Patients aged 18–65 with BMI ≥ 35 kg/m2 and failed primary restrictive bariatric procedures |
| Care Setting | University hospital with a focus on bariatric metabolic surgery |
Key Highlights
- Cumulative failure rates after primary restrictive procedures range from 30% to 60% at five years.
- OAGB is a viable conversion alternative to RYGB with comparable effectiveness.
- Study included 150 patients with specific inclusion and exclusion criteria.
Guideline-Based Recommendations
Diagnosis
- Identify suboptimal initial response (SIR) and late postoperative clinical deterioration (LPCD) based on defined criteria.
Management
- Consider OAGB as a conversion procedure for patients with failed primary restrictive bariatric surgery.
Monitoring & Follow-up
- Follow-up visits scheduled at 10 days, 1, 3, 6, 12, 18, 24 months, and annually up to 5 years post-operation.
Risks
- Potential complications include procedure-related issues such as band erosion and postoperative leakage.
Patient & Prescribing Data
Patients with failed primary restrictive bariatric procedures (VBG, LAGB, LSG, GCP).
OAGB may offer a simpler and effective alternative for weight loss and comorbidity resolution.
Clinical Best Practices
- Conduct thorough preoperative assessments including nutritional and psychological evaluations.
- Utilize laparoscopic techniques for conversion procedures to minimize complications.
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