Evidence map›Paper›PMID 40632451›Full record

ArticleObesity surgery2025

Laparoscopic Roux-en-Y Gastric Bypass: Evolution of Weight Loss and Metabolic Obesity-Related Complications After 15-20 Years.

Beatriz Barberá-Carbonell, Anna Dayer-Jankechova, Sergio Gaspar-Figueiredo, Heloise Smet, Styliani Mantziari, Michel Suter

Abstract read
In one paragraph

Article in Obesity surgery, 2025. 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.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Beatriz Barberá-CarbonellRiviera-Chablais Hospital, Rennaz, Switzerland.
Anna Dayer-JankechovaRiviera-Chablais Hospital, Rennaz, Switzerland.
Sergio Gaspar-FigueiredoRiviera-Chablais Hospital, Rennaz, Switzerland.
Heloise SmetRiviera-Chablais Hospital, Rennaz, Switzerland.
Styliani MantziariFaculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland.
Michel SuterRiviera-Chablais Hospital, Rennaz, Switzerland. michelsuter@netplus.ch.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRoux-en-Y gastric bypass (RYGB) is one of the prevailing metabolic/bariatric surgical (MBS) procedures. It has been used for > 50 years, yet few long-term results (> 10 years) have been published. The aim of this study is to report 15-year results and beyond in a large patient group regarding weight loss, metabolic outcomes and long-term morbidity.

methodsOur prospective bariatric database was reviewed and analyzed retrospectively. All patients who underwent primary laparoscopic RYGB between 1999 and 2008 were included. Data was gathered during in-person visits for most patients, but also using electronic medical records, phone calls to patients and/or general practitioners.

resultsNine hundred forty-four patients underwent RYGB during the study period. All were eligible for follow-up after 15 years, and 340 were eligible after 20 years. 39 (4.1%) patients died during the first 15 postoperative years. Follow-up rates were 91.7%, 74.5% and 52.3% after 10, 15 and 20 years respectively. Weight loss peaked after 2 years when total weight loss (TWL) reached 35.1%. TWL was 28.6%, 28.4% and 26.7% after 10, 15 and 20 years. Mean body mass index decreased from 45.7 kg/m

conclusionsRYGB is an efficient MBS procedure, associated with sustained weight loss and improvement of metabolic complications; a slight worsening occurs over time, partly attributed to aging and the chronic course of obesity and related metabolic disorders.

Indexed as

Gastric BypassLaparoscopyObesity, MorbidPostoperative ComplicationsWeight LossAdultBody Mass IndexFemaleFollow-Up StudiesHumansMaleMiddle AgedRetrospective StudiesTime FactorsTreatment OutcomeBariatric surgeryGastric bypassLong-termMetabolic surgeryObesityRoux-en-Y gastric bypass

Identifiers

PMID40632451
PMCPMC12380876

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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.