Key points
After obesity surgery, your needs may change. Reflux, eating difficulties, weight regain or other symptoms may warrant a new assessment.
Several options are possible: nutritional support, medication, endoscopic treatment or a new operation, depending on the situation.
Where possible, choose the centre where you had your operation, for continuity of follow-up. You can also come to the Centre in Nyon for a second opinion or to resume follow-up, whether you had your operation in Switzerland or abroad.
When should you seek a reassessment?
A consultation can be useful if you have:
- persistent reflux or heartburn;
- difficulty eating, vomiting or foods that are poorly tolerated;
- pain or feeling unwell after meals;
- weight regain or the return of an associated condition, such as diabetes;
- deficiencies, unusual tiredness or a problem related to a gastric band.
You can also come simply to resume follow-up that has lapsed.
If you have significant or sudden symptoms, a prompt assessment may be needed: do not wait for a routine follow-up appointment.
Warning signs after an operation
An assessment suited to your history
We review with you the operation you had, how things have evolved since then, your symptoms, your diet and your treatments.
Bring the reports and results you have. You do not need to have had a specialist assessment to book an appointment. Further tests are chosen according to your situation.
This assessment helps us understand the difficulties and discuss possible solutions with you.
Treatments that can complement each other
Adjusting your support
Support may include dietary advice, supplements, physical activity or psychological support, depending on your needs. In particular, it helps correct deficiencies and establish practical routines that fit your daily life.
Using medication when it is helpful
Medication can play a role in treating reflux, weight regain or associated conditions. It can complement the effects of surgery during follow-up.
Medication and surgery: complementary approaches
Discussing endoscopic treatment
In some situations, treatment by endoscopy may be considered. Whether it is appropriate depends on the problem identified, the original operation and the rules that apply to the proposed technique.
Considering a new operation
Revisional surgery means modifying or correcting a previous operation. It may be discussed when an anatomical problem justifies it or when other treatments do not adequately address the situation.
The choice of operation depends on the existing anatomy, the symptoms and the goals of treatment.
The decision is made collectively by the multidisciplinary team, with you. The expected benefits, the risks and the arrangements for follow-up are explained before any decision.
Where should you be seen after your operation?
Where possible, choose to be seen at the centre that performed your operation or that provides your follow-up. That team knows your operation and how your care has evolved.
You can also come to the Centre in Nyon if you would like a second opinion, if your original centre is no longer available or if you need to resume follow-up. This is possible whether you had your operation in Switzerland or abroad.
Bring the reports and results you have. If some documents are missing, you can still book an appointment. With your consent, we can liaise with your original team to support continuity of care.
How your care is organised
Your assessment, preparation and follow-up can be organised at the Centre in Nyon.
When an operation requires a specialist referral centre, we coordinate this step with the appropriate hospital. Wherever possible, and with the agreement of the host centre, Dr Pierre Fournier performs your operation there himself.
Frequently asked questions
Does weight regain mean my operation has failed?
Weight regain can be part of the course of a chronic disease. It warrants an assessment to understand its causes and find an appropriate response. The solutions are not only surgical.
Does reflux after a sleeve always mean another operation?
No. Management depends on the symptoms, the test results and the response to treatment. A new operation may be discussed when the situation justifies it.
My follow-up stopped several years ago: can I come back?
Yes. You can get back in touch with your original centre. If you would like to be supported in Nyon or to ask for a second opinion, you can also come to the Centre.
Medical review of the French version: Dr Pierre Fournier
Scientific sources and references
Sources accessed on 15 October 2026.
- Gerber PA, Collet TH, Favre L, et al. Swiss obesity clinical practice guidance. Swiss Med Wkly. 2026;156:5415. doi:10.57187/5415. View source
- Cohen RV, Kermansaravi M, Levinson R, et al. International Federation for the Surgery and Other Therapies for Obesity (IFSO) global consensus recommendations for optimizing outcomes after sleeve gastrectomy. Br J Surg. 2025;112(10):znaf188. doi:10.1093/bjs/znaf188 (correction: Br J Surg. 2026;113(3):znag011). View source
- Brown WA, Fisher OM, Johari Y, et al. International Federation for Surgery for Obesity and Metabolic Disorders position statement on the role of upper gastrointestinal endoscopy before and after metabolic bariatric surgery. Obes Surg. 2025;35(12):4889-4916. doi:10.1007/s11695-025-08206-8. View source
- Swiss Society for the Study of Morbid Obesity and Metabolic Disorders (SMOB). Directives pour le traitement chirurgical de l’obésité [Guidelines for the surgical treatment of obesity, French version], in force since 1 July 2023 (version published on smob.ch, checked on 15 October 2026). View source
- Author
- Prepared for the Centre from the sources cited
- References
- See “Scientific sources and references” on this page