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Conversion of Open Vertical Banded Gastroplasty to Roux-en-Y Gastric Bypass: a Single-Center, Single-Surgeon Experience with 6 Years of Follow-up

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Abstract

Background

The aim of this study is to assess feasibility, relief of complications and mid- and long-term weight loss results following the conversion of open vertical banded gastroplasty (VBG) to Roux-en-Y gastric bypass (RYGB).

Materials and Methods

Retrospective analysis of patients undergoing conversion of open VBG to RYGB (open and laparoscopic) between 1 April 2000 and 1 January 2015 was performed. (Post)operative complications were listed. Weight loss was assessed using excess weight (EW), percentage excess weight loss (%EWL) and body mass index (BMI) at 1-year intervals after surgery. Ideal weight was determined by recalculating individual lengths to a BMI of 25 kg/m2. Application of polynomial regression models was used to quantify weight loss over time.

Results

Ninety patients were identified in the database. Mean time between bariatric interventions was 9.6 years. Reasons for conversion were insufficient weight loss (82.2 %) and outlet obstruction (17.8 %). Early complications were encountered in eight patients of which three were reoperated. Patients who underwent conversion for inadequate weight loss after VBG were retrospectively analyzed regarding weight loss: 78.0 % EWL after 1 year, 71.4 % after 2 years, 62.1 % after 3 years, 64.1 % after 4 years, 70.2 % after 5 years, and 68.9 % after 6 years. Outlet obstruction was relieved in 94 %. Patient satisfaction was assessed by telephone: 86.4 % would repeat the conversion.

Conclusions

Conversion of open VBG to RYGB is feasible and safe and can be performed with an acceptable complication rate. It gives excellent weight loss results and relief of outlet obstruction.

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Acknowledgments

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Ethical Approval and Informed Consent

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. For this type of study, formal consent is not required. Informed consent was obtained from all individual participants included in the study.

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The authors declare that they have no competing interests.

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Authors and Affiliations

  1. J-.B. Stessensstraat 2, B-2440, Geel, Belgium

    Ben Gys, Filip Haenen, Michael Ruyssers, Tobie Gys & Thierry Lafullarde

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  1. Ben Gys
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  2. Filip Haenen
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  3. Michael Ruyssers
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  4. Tobie Gys
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  5. Thierry Lafullarde
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Correspondence to Ben Gys.

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Gys, B., Haenen, F., Ruyssers, M. et al. Conversion of Open Vertical Banded Gastroplasty to Roux-en-Y Gastric Bypass: a Single-Center, Single-Surgeon Experience with 6 Years of Follow-up. OBES SURG 26, 805–809 (2016). https://doi.org/10.1007/s11695-015-1818-0

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  • DOI: https://doi.org/10.1007/s11695-015-1818-0

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