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Review
. 2020 Mar;8(Suppl 1):S7.
doi: 10.21037/atm.2020.02.03.

Efficiency and risks of one-anastomosis gastric bypass

Rene Aleman  1 , Emanuele Lo Menzo  1 , Samuel Szomstein  1 , Raul J Rosenthal  1
Affiliations
Review

Efficiency and risks of one-anastomosis gastric bypass

Rene Aleman et al. Ann Transl Med. 2020 Mar.

Abstract

The single-anastomosis gastric bypass has been proposed as a simpler and efficient weight loss reducing surgery. Postoperative outcomes are comparable to those of contemporary popular procedures. There are, however, controversies regarding the efficiency and risks of one-anastomosis gastric bypass (OAGB). The purpose of this review is to define the role of OAGB in metabolic surgery via its operative outcomes. A review of English language literature was performed using the PubMed database, basing the search on the following keywords: "one-anastomosis gastric bypass" AND "outcomes". A total of 238 articles were considered for review. Following thorough screening and selection criteria, 7 articles were considered sufficient for assessment. The nature of the available evidence of this technique poses a challenge to OAGB in its establishment as a standard of care procedure. The anatomical configuration following surgery, as well as the metabolic implications of its hypo-absorptive nature, raises controversial and ongoing concerns that are yet to be addressed. Hence, prospective studies with long-term follow-up (>5 years) can bypass these concerns and allow the progression of the clinical practice of OAGB.

Keywords: One-anastomosis gastric bypass (OAGB); bariatric surgery; mini gastric bypass; obesity; single anastomosis gastric bypass; weight loss.

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Conflict of interest statement

Conflicts of Interest: The focused issue “Bariatric Surgery” was commissioned by the editorial office without any funding or sponsorship. The authors have no conflicts of interest to declare.

Figures

Figure 1
Figure 1
Postoperative upper gastrointestinal tract fluoroscopic study showing the gastrojejunostomy after OAGB. OAGB, one-anastomosis gastric bypass.
Figure 2
Figure 2
Diagram showing the final anatomy after OAGB. OAGB, one-anastomosis gastric bypass.
See this image and copyright information in PMC

References

    1. Adult Obesity Facts. Overweight & Obesity. Available online: https://www.cdc.gov/obesity/data/adult.html
    1. Jensen MD, Ryan DH, Apovian CM, et al. 2013 AHA/ACC/TOS guideline for the management of overweight and obesity in adults: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines and The Obesity Society. Circulation 2014;129:S102-38. 10.1161/01.cir.0000437739.71477.ee - DOI - PMC - PubMed
    1. Estimate of Bariatric Surgery Numbers, 2011-2017. American Society for Metabolic and Bariatric Surgery. In: American Society for Metabolic and Bariatric Surgery. Available online: https://asmbs.org/resources/estimate-of-bariatric-surgery-numbers
    1. Buchwald H, Oien DM. Metabolic/bariatric surgery worldwide 2011. Obes Surg 2013;23:427-36. 10.1007/s11695-012-0864-0 - DOI - PubMed
    1. De Luca M, Tie T, Ooi G, et al. Mini Gastric Bypass-One Anastomosis Gastric Bypass (MGB-OAGB)-IFSO Position Statement. Obes Surg 2018;28:1188-206. 10.1007/s11695-018-3182-3 - DOI - PubMed