Severity of post-Roux-en-Y gastric bypass dumping syndrome and weight loss outcomes: is there any correlation?

Mohammad Kermansaravi*, Shahab ShahabiShahmiri, Ramon Vilallonga*, Barmak Gholizadeh, Amir Hossein DavarpanahJazi, Yeganeh Farsi, Rohollah Valizadeh, Masoud Rezvani

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review


Purpose: The present research was conducted to evaluate the effect of the severity of dumping syndrome (DS) on weight loss outcomes after Roux-en-Y gastric bypass (RYGB) in patients with class III obesity. Methods: The present retrospective cohort study used the dumping symptom rating scale (DSRS) to evaluate the severity of DS and its correlation with weight loss outcomes in 207 patients 1 year after their RYGB. The patients were assigned to group A with mild-to-moderate DS or group B with severe DS. Results: The mean age of the patients was 42.18 ± 10.46 years and their mean preoperative BMI 42.74 ± 5.59 kg/m2. The total weight loss percentage (%TWL) in group B was insignificantly higher than that in group A, but besides that was not significantly different in the two groups. Conclusion: The present findings suggested insignificant relationships between the presence and severity of DS after RYGB and adequate postoperative weight loss.

Original languageEnglish
Article number10
Number of pages6
JournalLangenbeck's Archives of Surgery
Publication statusE-pub ahead of print - 6 Jan 2023


  • Bariatric surgery
  • Dumping syndrome
  • Gastric bypass
  • RYGB
  • Weight loss
  • Body Mass Index
  • Gastric Bypass/adverse effects
  • Humans
  • Middle Aged
  • Treatment Outcome
  • Dumping Syndrome/etiology
  • Obesity, Morbid/surgery
  • Weight Loss
  • Adult
  • Retrospective Studies


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