Nutrition Care in Bariatric Surgery

NCBS: Weight Loss and Weight Regain Expected After Procedure (2009)

• Assessment
  In adults, how much weight loss is expected after each type of bariatric surgery procedure?

  • Conclusion

    Bariatric surgery for adults can be expected to result in at least 50% excess weight loss. Average weight loss by procedure is:

    • Adjustable gastric banding (AGB): 50% mean EWL with a range of 32% to 70% EWL
      • Weight loss at follow-up
        • One year: 50% EWL
        • Two years: 55% EWL
        • Five years: 50% EWL
        • 10-year data not available for AGB.
    • Roux-en-Y gastric bypass (RYGBP): 68% mean EWL with a range of 33% to 77% EWL
      • Weight loss at follow-up
        • One year: 64% EWL
        • Two years: 67.5% EWL
        • Five years: 58% EWL
        • 10 years: 52% EWL.
    • Biliopancreatic diversion (BPD): 79% mean EWL with a range of 62% to 75% EWL
      • Weight loss at follow-up
        • One year: 71.8% EWL
        • Two years: 75.1% EWL
        • Five years: 73.3% EWL
        • 10 years: 77% EWL.
  • Grade: I
    • Grade I means there is Good/Strong evidence supporting the statement;
    • Grade II is Fair;
    • Grade III is Limited/Weak;
    • Grade IV is Expert Opinion Only;
    • Grade V is Not Assignable.
    • High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
    • Moderate (B) means we are moderately confident in the effect estimate;
    • Low (C) means our confidence in the effect estimate is limited;
    • Very Low (D) means we have very little confidence in the effect estimate.
    • Ungraded means a grade is not assignable.
  • Evidence Summary: Weight Loss Following Bariatric Surgery - ALL
    • Detail
    • Quality Rating Summary
      For a summary of the Quality Rating results, click here.
    • Worksheets
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  • Search Plan and Results: NCBS: Weight Loss and Weight Regain by Bariatric Surgery Procedure 2008