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Clinical Trials in Sweden / NCT07347093
Active, not recruiting Observational

Reversal of Roux-en-Y Gastric Bypass: A Swedish National Cohort Study

NCT07347093 · tracked via the Priya Life Science Sweden tracker
Sponsor
Vrinnevi Hospital
Phase
Observational
Started
2025-11-01
Last updated
2026-01-20

Condition(s) studied

Gastric Bypass SurgeryRevisional Bariatric SurgeryComplications After Bariatric Surgery

Study 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.

Eligibility

Sex
ALL
Min age
18 Years
Max age
—
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)

Primary outcome measure(s)

  • 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.

Trial sites (1)

FacilityCityRegionStatus
Vrinnevi Hospital Norrköping Sweden
Official registry record

This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.

View NCT07347093 on ClinicalTrials.gov ↗ ← All trials in Sweden