Laparoscopic One Anastomosis Gastric Bypass as a Revision for Weight Loss Failure Following Restrictive Surgical Interventions
By
Hossam S Abdelrahim
Ahmed Elnabil-Mortada
Wadie Boshra Gerges
Haitham M. Elmaleh
July 6, 2026
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. Related Resources & Content
