Banded One-Anastomosis Gastric Bypass (BOAGB) for Patients Living with Obesity and Extreme Obesity: A Single Institution’s Experience

Elchanan Quint, Zvi H. Perry, Nur Elkrinawi, Ivan Kukeev, David Czeiger, Alex Vakhrushev, Gilbert Sebbag, Oleg Dukhno

Research output: Contribution to journalArticlepeer-review


Background: The prevalence of patients suffering from extreme obesity (body mass index (BMI) ≥ 50) has significantly increased over the past three decades, surpassing the rise in the general population of overweight patients. Weight loss outcomes after bariatric surgery in patients suffering from extreme obesity are less favorable, with a higher incidence of weight regain. Variations of existing bariatric procedures have been proposed to address this issue. One such variation is adding a gastric band to limit the expansion of the newly created pouch. Limited data exist regarding the effectiveness of this procedure, called the banded one-anastomosis gastric bypass (BOAGB) procedure, compared to other bariatric procedures. Method: In this retrospective study, we compared all patients who underwent the BOAGB procedure at the Bariatric Surgery Unit in our Medical Center with a postoperative follow-up of at least 1 year with patients who underwent a one-anastomosis gastric bypass (OAGB) or sleeve gastrectomy (SG) procedures. Data collected included demographics, comorbidities, surgical outcomes, complications, and postoperative quality-of-life assessments. Results: One hundred eleven patients were enlisted to our study during the relevant study period—24 patients underwent the BOAGB procedure, 43 underwent OAGB, and 44 underwent a SG. Lost to follow-up beyond 30 days was 9% (at 1-year post-surgery, we were able to establish contact with 101 patients). The pre-op BMI was significantly higher in the BOAGB group compared to the other procedures. Additionally, a higher prevalence of diabetes was observed in the BOAGB group. The duration of surgery was significantly longer for the BOAGB procedure. No significant differences were found in surgical complications. Overall, all procedures resulted in significant excess weight loss (EWL) or change in BMI, improvement in comorbidities, and improved quality of life postoperatively. Conclusions: The BOAGB procedure, like OAGB and SG, demonstrated favorable weight loss outcomes and weight maintenance 1 year postoperatively without significant differences between the procedures. The BOAGB procedure is relatively new, with good bariatric outcomes and a favorable safety profile. Long-term study is needed to evaluate these various bariatric procedures’ efficacy further. Graphical Abstract: (Figure presented.)

Original languageEnglish
Pages (from-to)1756-1763
Number of pages8
JournalObesity Surgery
Issue number5
StatePublished - 1 May 2024
Externally publishedYes


  • Banded one-anastomosis gastric bypass
  • Excess weight loss
  • One-anastomosis gastric bypass
  • Sleeve gastrectomy
  • Surgical outcomes

ASJC Scopus subject areas

  • Nutrition and Dietetics
  • Surgery
  • Endocrinology, Diabetes and Metabolism


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