Evidence map›Paper›PMID 32761373›Full record

Trial reportLangenbeck's archives of surgery2021

One anastomosis gastric bypass vs. Roux-en-Y gastric bypass: a 5-year follow-up prospective randomized trial.

Luis Level, Alejandro Rojas, Silvia Piñango, Yubisay Avariano

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Langenbeck's archives of surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 13 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 13 pooled it
4.3field-weighted citation impact, top 5% of its field
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

33 citing papers in PubMed, 13 syntheses or guidelines pooled it, 57 citations in OpenAlex.

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  19. Early Impact of Bariatric Surgery on Brain Functionality.Journal of metabolic and bariatric surgery · 2025
    Review
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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

4 authors at 1 institution in 1 country.

Luis LevelUniversidad Central de Venezuela, Hospital Dr. Miguel Pérez Carreño, General Surgery Service I, Caracas, Venezuela. levelluis@yahoo.com.ORCID https://orcid.org/0000-0001-5459-0112
Alejandro RojasHospital Dr. Miguel Pérez Carreño, General Surgery Service I, Caracas, Venezuela.
Silvia PiñangoHospital Dr. Miguel Pérez Carreño, General Surgery Service I, Caracas, Venezuela.
Yubisay AvarianoHospital Dr. Miguel Pérez Carreño, General Surgery Service I, Caracas, Venezuela.
Hospital Clínico Universitario de Caracas · VE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundOne anastomosis gastric bypass (OAGB) is a relatively novel technique with excellent outcomes, comparable to most accepted procedures. Our aim was to compare OAGB and Roux-en-Y gastric bypass (RYGB) in terms of percent of excess weight lost (%EWL) and resolution of comorbidities.

methodsThirty-three patients were randomly assigned (1:2) to two groups (OAGB = 9 and RYGB = 24). Patients were analyzed prospectively.

resultsThe 5-year follow-up was 85% (28 patients). Both groups were comparable preoperatively in age, weight, body mass index (BMI), and excess weight. One intraoperative complication in OAGB group and no major postoperative complications for both groups were recorded. Progressive decrease in weight, BMI, and %EWL was observed at 1, 6, 12 months, and 5 years, with no differences between groups. Regarding comorbidities, we registered complete remission in type 2 diabetes mellitus (T2DM), insulin resistance, and dyslipidemia with OAGB. RYGB group reported complete remission in T2DM, insulin resistance, dyslipidemia, and gastroesophageal reflux disease (GERD). Mean operative time were 113.3 min ± 41.2 and 143.7 min ± 21.85 for OAGB and RYGB respectively. Mean number of reloads used was 5 for OAGB and 7 for RYGB, which demands further investigations. Postoperative pain was significantly higher in RYGB group. Hospital stay was 3 days for both groups.

conclusionAt 5-year follow-up, patients of both techniques achieved similar outcomes in terms of %EWL and resolution of comorbidities, without early or mid-term major complications and no mortality. OAGB demonstrated less use of surgical stapling and unexplainably less postoperative pain compared to RYGB.

Indexed as

Diabetes Mellitus, Type 2Gastric BypassObesity, MorbidAnastomosis, Roux-en-YFollow-Up StudiesHumansProspective StudiesRetrospective StudiesWeight LossBariatric surgeryOne-anastomosis gastric bypassRoux-en-Y gastric bypass

Identifiers

PMID32761373
OpenAlexW3046995491

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.