Gastric Bypass pp 137-144 | Cite as

Mini-Gastric Bypass and One-Anastomosis Gastric Bypass: Rationale

  • Mervyn DeitelEmail author
  • Cesare Peraglie
  • David Hargroder


The mini-gastric bypass (MGB), which originated in 1997 as a simple, rapid, and mainly malabsorptive bariatric operation, is now increasing internationally. A variant of the MGB, started in Spain in 2002 with an anti-reflux mechanism, is called the one-anastomosis gastric bypass (OAGB or BAGUA); the OAGB is also commonly performed in Mexico and Latin America. The MGB and OAGB have increased over the years and now make up the third most common bariatric operations worldwide (and the most common gastric bypasses in many countries). Reports show them to be superior operations with respect to safety, short learning curve, resolution of comorbidities (especially diabetes), excellent quality of life, and durable weight loss. Revision or reversal can be readily performed. We present the methods and rationale of the MGB-OAGB.


Mini-gastric bypass One-anastomosis gastric bypass (BAGUA) Surgical technique Rationale Diabetes Comorbidities Quality of life Weight loss Nutritional replacement Low serum iron Hypoalbuminemia 



The authors thank Prof. Miguel Carbajo (Member of International Committee for the European Accreditation Council for Bariatric Surgery of IFSO); Robert Rutledge, MD, FACS; and Kuldeepak S. Kular, President of the MGB-OAGB Club, for review and suggestions with this chapter.

Conflict of Interest

The authors have no conflicts of interest to disclose.


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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Mervyn Deitel
    • 1
    Email author
  • Cesare Peraglie
    • 2
  • David Hargroder
    • 3
  1. 1.Mini-Gastric Bypass–One Anastomosis Gastric Bypass ClubTorontoCanada
  2. 2.Department of SurgeryHeart of Florida Regional Medical CenterDavenportUSA
  3. 3.Department of SurgeryMercy HospitalsJoplinUSA

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