SynthesisObesity surgery2024
A Meta-Analysis Comparing RYGB with Long Biliopancreatic Limb (BPL) Versus Long Alimentary Limb (AL) in Groups with Equal or Nearly Equal Combined Bypass Lengths (Combined BPL and AL Lengths): Does Switching Seats Enhance Weight Loss?
Synthesis in Obesity surgery, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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
4 citing papers in PubMed, 1 synthesis or guideline pooled it.
- The Nutritional Challenges Following Revisional Bariatric Surgery After Sleeve Gastrectomy: A Systematic Review and Meta Analysis.Obesity surgery · 2025Pooled it
- Eleven-Year Outcomes of a Randomized Controlled Trial Comparing Standard and Distal Roux-en-Y Gastric Bypass in Patients with BMI Above 50 kg/m².Obesity surgery · 2025Trial
- Global Technical Variations in Roux-en-Y Gastric Bypass: A Worldwide Survey Among IFSO Members.Obesity surgery · 2026Article
- Roux-en-Y Gastric Bypass: Revisiting Gastric Pouch Length Variability in Search of Consensus.Obesity surgery · 2025Article
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.
Funding
No grant is acknowledged in the PubMed record.
Abstract
It is well-established that extending either the biliopancreatic limb (BPL), the alimentary limb (AL), or both, results in increased combined bypass (CB) length, which in turn leads to enhanced weight loss and potential nutritional deficiencies due to heightened malabsorptive effects. However, a key question remains: Assuming no change in CB length, does altering BPL length affect outcomes? To address this question, we examined studies comparing long BPL and long AL (short BPL) while maintaining equal or nearly equal CB lengths. We conducted this systematic literature review according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. We performed a meta-analysis on weight loss outcomes, adverse events and safety-related outcomes, gastrointestinal complaints, and nutritional outcomes at the 2-year mark.
Indexed as
Identifiers
39446291What OpenQuestion holds
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.