ArticleThe American journal of case reports2026
Laparoscopic Reversal of One-Anastomosis Gastric Bypass After Sleeve Gastrectomy: A Case Report.
Article in The American journal of case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
BACKGROUND One-anastomosis gastric bypass (OAGB) is an effective bariatric surgery; however, there may be serious instances of metabolic and nutritional complications that may require complete reversal. Reversal of complete OAGB to near-normal physiology, especially with a background of sleeve gastrectomy, is extremely rare. This case report discusses the complications associated with reversal of OAGB. CASE REPORT Our patient was a 28-year-old woman who had a history of a sleeve gastrectomy procedure and later underwent a revisional OAGB procedure for poor weight loss/weight regain. She later developed weakness, chronic diarrhea, vomiting, severe protein-calorie malnutrition, refractory micronutrient deficiencies, and severe liver dysfunction with significant hepatocellular damage. She was admitted in unstable medical condition. After multidisciplinary evaluation, the patient underwent a laparoscopic reversal of OAGB to near-normal anatomy. The postoperative course was complicated by septic shock and multi-organ dysfunction requiring critical care interventions. With comprehensive multidisciplinary management, the patient gradually improved. After more than 8 months of follow-up, she demonstrated recovery in nutritional status, liver function, and functional capacity, despite the presence of a reduced gastric reservoir due to prior sleeve gastrectomy. CONCLUSIONS This case confirms that complete reversal of OAGB can be life-saving in selected patients with severe malnutrition and metabolic issues. Early identification of nutritional deficiencies and multidisciplinary care are critical to optimize outcomes in high-risk patients following bariatric surgery.
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