One Anastomosis Gastric Bypass/Minigastric Bypass in Patients with BMI < 35 kg/m2 and Type 2 Diabetes Mellitus: Preliminary Report

  • Salvador Navarrete AulestiaEmail author
  • José Luis Leyba
  • Salvador Navarrete Llopis
  • Viviana Pulgar
Original Contributions



Obesity in the world has been increasing, and the number of diabetic patients will increase by 114%, and the best treatment results are achieved through surgery. Several techniques have been described; the gastric bypass of an anastomosis (MGB/OAGB) has been gaining popularity for its simplicity and good results. We present a prospective study with this technique in 16 mild obesity patients with type 2 diabetes mellitus or peripheral insulin resistance.


To evaluate weight loss as well as metabolic changes by measuring fasting glycemia and Hb A1c after 1 year of follow-up.

Material and Methods

Sixteen patients were operated on with the OAGB/MGB technique from September 2014 to January 2016, with some form of metabolic syndrome, whether DM2, RPI, HBP, or dyslipidemia, including patients in the study with a follow-up of at least 12 months.


There were 13 cases of female sex and 3 of male, average age of 42.9 years, with an average weight of 87.7 kg and BMI of 32.2 kg/m2. Metabolic values were fasting glycemia of 193.6 ± 52.9 mg/dl and HbA1c of 8.4% ± 1 (preop) and glycemia posop, 78.8 ± 7.6 mg/dl; HbA1c posop, 6.1 ± 0.2; preop weight, 87.7 ± 14 kg (69–116); weight posop, 66.8 ± 10.5 kg (49–90); BMI preop, 32.2 ± 1.8 (30–34.9); BMI posop, 25.4 ± 1.7 (21.7–27.6); percentage of excess weight lost, 87.6 ± 11.8 (70.9–100) % with 100% remission of diabetes.


The results show the benefits of MGB/OAGB in mild obese diabetic patients.


Gastric bypass One anastomosis gastric bypass Diabetes mellitus Metabolic surgery Laparoscopy 


Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.

Ethical Approval

Approval from the local ethics committee and informed consent from all patients were obtained. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Universidad Central de VenezuelaCaracasVenezuela
  2. 2.Cleveland ClinicClevelandUSA
  3. 3.Hospital Rio HortegaValladolidSpain

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