Observational studySurgical endoscopy2022
Insufficient weight loss after banded vs. non-banded primary gastric bypass surgery: insights from an observational 5 year follow-up study.
Observational study in Surgical endoscopy, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed, 1 synthesis or guideline pooled it, 4 citations in OpenAlex.
- Ring-augmented Metabolic Bariatric Surgery Procedures GRADE-based International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO) Position Statement.Obesity surgery · 2026Pooled it
- Five-year outcomes of a randomized controlled trial evaluating a non-adjustable ring in Roux-en-Y gastric bypass.Surgical endoscopy · 2025Trial
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundWhile Roux-en-Y gastric bypass (RYGB) is effective in achieving weight loss and improving obesity-related co-morbidities, insufficient weight loss in the long-term can occur. The goal was to assess whether banded vs. non-banded RYGB reduces the risk of insufficient weight loss at 5-year follow-up.
methodsThis is a retrospective single-center cohort study from Switzerland. We assessed the 5-year metabolic trajectories in terms of body weight, body mass index, glucose control, lipid profile and blood pressure of two surgical cohorts undergoing identical RYGB procedures with or without banding using a uniform 6.5 cm silastic Fobi band. Insufficient weight loss was defined as < 50% excess weight loss (EWL) at 5 years.
resultsA total of 55 patients receiving banded (Fobi) and 55 patients receiving non-banded (non-Fobi) RYGB were included in the analysis. 5-year follow-up was 91% for both groups. Percentage of EWL at 5 years was 78.11 ± 26.1% and 73.5 ± 27%.3 for the Fobi vs. non-Fobi group (p = 0.368), respectively. Insufficient weight loss (defined as < 50%EWL) at 5 years or last follow-up was significantly higher in the non-Fobi group compared to the Fobi group (19/55 vs. 9/55, respectively, OR = 2.639 (95% CI 1.066, 6.531), p = 0.036). Surrogate markers for cardiometabolic outcomes consistently improved over time, without differences between the groups. During the follow-up period, Fobi-removal was necessary in nine patients (16.3%).
conclusionBanded-RYGB lowered the odds of insufficient weight loss at 5 years follow-up by approximately 62%. Further research is needed to explore the effect of restriction on eating behaviour and neuroendocrine responses after RYGB.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.