Plain English Summary
Background and study aims
Bariatric surgery is a weight loss surgery that reduces the size of their stomach. After weight loss surgery some patients develop complaints of dumping. Two forms of dumping exists: Early dumping, which starts early after a meal and resemble the complaints of a after dinner dip but then more heavily: symptoms of nausea, sleepiness, sweating, stomach ache etc. Late dumping mostly starts 1,5 hours after a meal and give complaints of hypoglycaemia (sweating, trembling, drowsiness or even coma). The aim of this study is to examine the prevalence of early and late dumping after bariatric surgery and examine the influence of this on patient’s quality of life. The aim of this study is to examine the prevalence of early and late dumping after bariatric surgery and the impact of this on quality of life.
Who can participate?
Adults aged 18 and 70 years old who have underwent bariatric surgery.
What does the study involve?
Participants are asked to fill in one questionnaire some time after their bariatric surgery which takes 15 minutes. The questionnaire asks about late and early dumping and the impact on their quality of life.
What are the possible benefits and risks of participating?
There are no direct benefits or risks with participation.
Where is the study run from?
Medical Center Leeuwarden (Netherlands)
When is the study starting and how long is it expected to run for?
January 2012 to May 2013
Who is funding the study?
Center for Obesity Netherlands, Medical Center Leeuwarden (Netherlands)
Who is the main contact?
Mrs Marloes Emous
Mrs Marloes Emous
Medisch Centrum Leeuwarden
Henri Dunantweg 2
Prevalence of dumping after bariatric surgery and impact on quality of life
What is the prevalence of early and late dumping after bariatric surgery and what is the influence on quality of life?
Regional Examination Committee for Patient-Based Research, 05/23/2012, ref: number RTPO 859a
Single-centre cross-sectional study
Primary study design
Secondary study design
Cross sectional study
Quality of life
Patient information sheet
Not available in web format, please use the contact details to request a patient information sheet
Post-bariatric population and dumping syndrome
Participants are asked to fill in one questionnaire some time after their bariatric surgery which takes 15 minutes. The questionnaire asks about late and early dumping and the impact on their quality of life. No further actions are required.
Primary outcome measures
Prevalence of late dumping is measured using the dumping severity score and questionnaire at one time point few years after bariatric surgery.
Secondary outcome measures
1. Prevalence of early dumping is measured using the dumping severity score and questionnaire at one time point few years after bariatric surgery
2. Impact on quality of life is measured using the dumping severity score and questionnaire at one time point few years after bariatric surgery
Overall trial start date
Overall trial end date
Participant inclusion criteria
1. All patients who underwent bariatric surgery in a single hospital between 2008 and 2011
2. Aged between 18 and 70 years
3. All genders
Target number of participants
Participant exclusion criteria
There is no exclusion criteria.
Recruitment start date
Recruitment end date
Countries of recruitment
Trial participating centre
Medical Center Leeuwarden
Henri Dunantweg 2
Center for Obesity Netherlands, Medical Center Leeuwarden
Funding Body Type
Funding Body Subtype
Results and Publications
Publication and dissemination plan
1. One paper about the prevalence of early and late dumping after primary gastric bypass and their influence on quality of life
2. 1 paper about the prevalence of early and late dumping in patients after sleeve gastrectomy and revisional gastric bypass
IPD sharing statement:
The datasets generated during and/or analysed during the current study are/will be available upon request from Marloes Emous, surgeon and principal investigator at firstname.lastname@example.org.
Intention to publish date
Participant level data
Available on request
Results - basic reporting