Complications After Bariatric Surgery, Gastric Bypass Surgery, Revisional Bariatric Surgery
Conditions
Keywords
Roux-en-Y gastric bypass, Anatomical reversal, Indications, Complications, Outcomes
Brief summary
Objective: To investigates incidence, indications, symptom relief, complications, and weight outcomes after Roux-en-Y gastric bypass (RYGB) reversal. Background: RYGB is an effective treatment for obesity, but in rare cases may be associated with severe long-term complications requiring RYGB reversal. Evidence on incidence and outcomes is limited. Methods: This nationwide, multi-center, retrospective cohort study included all patients undergoing RYGB reversal in Sweden between 2007 and 2023. Data were obtained from the Scandinavian Obesity Surgery Registry (SOReg) and medical records.
Interventions
None listed
Sponsors
Vrinnevi Hospital
Study design
Observational model
COHORT
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Adult patients (≥ 18years) who underwent reversal of RYGB between 2007 and 2023.
Exclusion criteria
* Emergency reversal due to bowel ischemia * Reversal following other bariatric procedures (e.g. gastric banding) * Partial/functional reversals (e.g., gastro-gastric fistula or anastomosis between the Roux-limb and gastric remnant, without full reversal of RYGB)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Symptom relief | Through study completion, an average of 2 years. | Symptom relief is classified as no, partial, or complete improvement. Complete improvement was defined as full resolution of the index symptom (e.g., cessation of hypoglycemia, pain-free status without analgesics). Partial improvement denoted a clinically meaningful reduction in symptom severity or frequency that did not meet criteria for complete resolution. No improvement indicated persistent symptoms. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Indications for surgery | Through study completion, an average of 2 years. | Indications are categorized as abdominal pain, malnutrition, gastrointestinal symptoms, post-bariatric hypoglycemia, and psychological distress, and reported as number (frequencies). |
| Weight outcome after surgery | Through study completion, an average of 2 years. | Weigth \[in kilograms\] will be reported at baseline (before surgery), at one year follow-up, and two-year follow-up. |
| Complications | At 30-day follow-up and one-year follow-up after surgery. | Complications after surgery are registered as any complication and major complication (defined as Clavien-Dindo classification \>=3b), presented as number (frequencies). |
| Height | Through study completion, an average of 2 years | Height (in meters) will be used to report BMI (in kg/m2). |
| BMI | Through study completion, an average of 2 years. | Weight (in kilograms) and height (in meters) will be combined to report BMI (in kg/m2) at baseline (before surgery), at one year follow-up, andat two-year follow-up. |
Countries
Sweden
Contacts
PRINCIPAL_INVESTIGATOREllen A Andersson, MD
Department of Surgery, Vrinnevi Hospital, Norrköping, and Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
Outcome results
None listed