Obesity Surgery

, Volume 23, Issue 6, pp 740–755 | Cite as

Dumping Syndrome Following Gastric Bypass: Validation of the Dumping Symptom Rating Scale

  • Anna LaureniusEmail author
  • Torsten Olbers
  • Ingmar Näslund
  • Jan Karlsson
Original Contributions


There is a lack of prevalent data for dumping syndrome (DS) and methods discriminating between different symptoms of the DS. A self-assessment questionnaire, the Dumping Symptom Rating Scale (DSRS), was developed. The aim was to measure the severity and frequency of nine dumping symptoms and to evaluate the construct validity of the DSRS. Pre- and 1 and 2 years after Roux-en-Y gastric bypass surgery, 47 adults and 82 adolescents completed the DSRS. Cognitive interview was performed. Reliability and construct validity were tested. Effect sizes (ES) of changes were calculated. Patients found the questionnaire relevant. A high proportion of the respondents reported no symptoms affecting them negatively at all (floor effects). However, 12 % stated, quite severe, severe, or very severe problems regarding fatigue after meal and half of them were so tired that they needed to lie down. Nearly 7 % reported quite severe, severe, or very severe problems dominated by nausea and 6 % dominated by fainting esteem. The internal consistency reliability was adequate for both severity (0.81–0.86) and frequency (0.76–0.84) scales. ES were small, since some subjects experienced symptoms already preoperatively. Although most patients reported no or mild dumping symptoms 1 and 2 years after gastric bypass surgery, around 12 % had persistent symptoms, in particular, postprandial fatigue, and needed to lie down. Another 7 % had problems with nausea and 6 % had problems with fainting esteem. The DSRS is a reliable screening tool to identify these patients.


Roux-en-Y gastric bypass Dumping syndrome Gastrointestinal symptoms Construct validity 



Anna Laurenius has received travel support from Johnson & Johnson. Torsten Olbers has received lecture fees from Johnson & Johnson and Covidien and travel support from Johnson & Johnson.


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Anna Laurenius
    • 1
    Email author
  • Torsten Olbers
    • 1
  • Ingmar Näslund
    • 2
  • Jan Karlsson
    • 3
    • 4
  1. 1.Department of Gastrosurgical Research and Education, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
  2. 2.Department of Upper Gastrosurgical ResearchÖrebro University HospitalÖrebroSweden
  3. 3.Institute of Health and Care Science, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
  4. 4.Centre for Health Care SciencesÖrebro University HospitalÖrebroSweden

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