What Is Weight Loss After Bariatric Surgery Expressed in Percentage Total Weight Loss (%TWL)? A Systematic Review

Anne-Sophie van Rijswijk, Nienke van Olst, Winnie Schats, Donald L. van der Peet, Arnold W. van de Laar

Research output: Contribution to journalReview articleAcademicpeer-review

46 Citations (Scopus)

Abstract

Percentage total weight loss (%TWL) might be better than percentage excess weight loss to express weight loss in bariatric surgery. In this systematic review, performed according to the PRISMA statement, results of laparoscopic sleeve gastrectomy (LSG) and Roux-en-Y gastric bypass (LRYGB) are assessed in %TWL. A total of 13,426 studies were screened and 49 included, reporting data of 24,760 patients. The results show that, despite limiting data, LRYGB is favorable over LSG in terms of weight loss in short-term follow-up. Although recent guidelines recommend to use %TWL when reporting outcome in bariatric surgery, this study shows that there is still insufficient quality data in %TWL, especially on LSG. The use of %TWL as the primary outcome measure in bariatric surgery should be encouraged. Graphical abstract: [Figure not available: see fulltext.].
Original languageEnglish
Pages (from-to)3833-3847
Number of pages15
JournalObesity Surgery
Volume31
Issue number8
Early online date2021
DOIs
Publication statusPublished - Aug 2021

Keywords

  • %TWL
  • %WL
  • Bariatric surgery
  • Gastric bypass
  • LRYGB
  • LSG
  • Percentage total weight loss
  • Percentage weight loss
  • RYGB
  • Roux-en-Y gastric bypass
  • Sleeve
  • Sleeve gastrectomy
  • Systematic review
  • Weight loss

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