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Weight Loss After One Anastomosis Gastric Bypass-Mini Gastric Bypass (OAGB-MGB): Patient-Related Perioperative Predictive Factors

Obesity Surgery volume 30, pages 1316–1323 (2020)Cite this article

Abstract

Aim

The aim of this study was to find independent perioperative factors predicting unsuccessful weight loss following one anastomosis gastric bypass-mini gastric bypass (OAGB-MGB), a recently developed technique of bariatric surgery.

Methods

Using regression analysis, this prospective cohort study assessed the role of demographic and socioeconomic factors, clinical features, body composition, length of biliopancreatic limb (LBL), nutritional habits, comorbidities, and early post-operative weight reduction values, in predicting 1-year weight loss after OAGB-MGB. All patients at the center who underwent laparoscopic OAGB-MGB between October 2010 and May 2017 were included. The dependent variable was the percent of excess weight loss (%EWL) after 12-month follow-up. Weight loss outcome was defined as successful EWL (≥ 50%) or unsuccessful EWL (< 50%).

Results

Follow-up data at 1 year was available for 1309 (77%) patients. Mean EWL and BMI reduction were 81.63% and 16.82 ± 4.37 kg/m2 at 1 year. In addition, 48 (3.7%) patients had unsuccessful weight loss. Pre-operative higher BMI (OR, 1.34; p = 0.001), type 2 diabetes (OR, 4.26; p = 0.039), pre-surgery volume eating habit (OR, 0.12; p = 0.003), weight reduction value in the first month after surgery (OR, 0.80; p = 0.002), and length of biliopancreatic limb (LBL) (OR, 1.05; p = 0.017) were independently associated with unsuccessful weight loss at 1-year follow-up.

Conclusions

OAGB-MGB provides considerable weight loss for most patients. Initial lower BMI, absence of diabetes, being volume eater, and higher first month weight loss are independently associated with successful weight loss after 1 year.

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Acknowledgments

Data were obtained from the National Obesity Surgery Database, Iran. The authors extend their sincere thanks to all participants and the National Obesity Surgery Database team, who prepared us very useful data.

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Authors and Affiliations

  1. Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran

    Hastimansooreh Ansar, Negar Zamaninour, Abdolreza Pazouki & Ali Kabir

  2. Center of Excellence of European Branch of International Federation for Surgery of Obesity, Hazrat-e Rasool Hospital, Tehran, Iran

    Abdolreza Pazouki

Authors
  1. Hastimansooreh Ansar
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  2. Negar Zamaninour
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  3. Abdolreza Pazouki
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  4. Ali Kabir
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Corresponding author

Correspondence to Ali Kabir.

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This study was approved by Iran University of Medical Science Ethics Committee (Ethic number: IR.IUMS.REC.13970134).

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The authors declare that they have no conflict of interest.

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Ansar, H., Zamaninour, N., Pazouki, A. et al. Weight Loss After One Anastomosis Gastric Bypass-Mini Gastric Bypass (OAGB-MGB): Patient-Related Perioperative Predictive Factors. OBES SURG 30, 1316–1323 (2020). https://doi.org/10.1007/s11695-019-04270-z

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  • DOI: https://doi.org/10.1007/s11695-019-04270-z

Keywords

  • Excess weight loss, One-anastomosis gastric bypass, Pre-operative, Predictors, Weight reduction