The effect of stoma size on the mid-term weight loss outcome of one anastomosis gastric bypass (OAGB): a single-blinded prospective randomized trial.

Ahmed Elgeidie, Mohamed Abdelgawad, Mohamed El Sorogy, Ayman El Nakeeb, Mohamad Elrefai

Abstract readRandomized Controlled Trial

In one paragraph

Trial report in Surgical endoscopy, 2021. 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.

Primary and Revisional One Anastomosis Gastric Bypass: A Systematic Review and GRADE-Based IFSO Position Statement.Obesity surgery · 2026
Pooled it
Long-Term Weight Loss Outcomes of One Anastomosis Gastric Bypass: Assessment of 1971 Patients with 5-9-Year Follow-Up.Obesity surgery · 2025
Article
Peroperative administration of tranexamic acid in Roux-en-Y and one-anastomosis gastric bypass to reduce haemorrhage in patients with morbid obesity: protocol for randomised controlled trial (PATRY trial).BMJ open · 2024
Article
Efficacy and safety of one anastomosis gastric bypass versus Roux-en-Y gastric bypass for type 2 diabetes remission (ORDER): protocol of a multicentre, randomised controlled, open-label, superiority trial.BMJ open · 2022
Article

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

5 authors.

Ahmed ElgeidieDepartment of Surgery, Gastrointestinal Surgical Center, Mansoura University, Jeehan street, Mansoura, Dakahlia, Egypt.

Mohamed AbdelgawadDepartment of Surgery, Gastrointestinal Surgical Center, Mansoura University, Jeehan street, Mansoura, Dakahlia, Egypt.

Mohamed El SorogyDepartment of Surgery, Gastrointestinal Surgical Center, Mansoura University, Jeehan street, Mansoura, Dakahlia, Egypt.

Ayman El NakeebDepartment of Surgery, Gastrointestinal Surgical Center, Mansoura University, Jeehan street, Mansoura, Dakahlia, Egypt.

Mohamad ElrefaiDepartment of Surgery, Gastrointestinal Surgical Center, Mansoura University, Jeehan street, Mansoura, Dakahlia, Egypt. mohelrefai@hotmail.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundOne anastomosis gastric bypass (OAGB) is gaining wide spread acceptance among bariatric surgeons all over the world because of its technical simplicity and documented efficacy. However, the relation between stoma size in OAGB and magnitude of weight loss has not been addressed.

objectivesTo evaluate the effect of stoma size on the mid-term weight loss outcome for patients with obesity after OAGB.

settingUniversity Hospital. MATERIALS AND

methodsThis is a single-blinded prospectively randomized trial. From March 2014 to September 2016, 83 patients, eligible for bariatric surgery, were included in the study. OAGB was carried out with the same technical steps, except for the size of the gastrojejunostomy (GJ). Patients were randomly allocated into two equal groups; narrow GJ group (30 mm) and wide GJ group (45 mm). The percentage of total weight loss (%TWL) and the percentage of excess weight loss (%EWL) were recorded at 6, 12 and 24 months after procedure.

resultsAt 6 months follow-up, patients with 30 mm GJ had better %EWL (53.3) and %TWL (23.4) than other patients with 45 mm GJ (42.6 and 18.2 respectively). However, at 12 and 24 months the %TWL and %EWL difference between the two groups have disappeared.

conclusionPatients with narrower stoma size (30 mm) of OAGB tend initially to lose more weight than patients with wider stoma (45 mm). However, this difference disappears at mid-term follow-up after 2 years.

Indexed as

Gastric BypassWeight LossAdultAnastomosis, SurgicalBody Mass IndexFemaleHumansMalePreoperative CareProspective StudiesRetrospective StudiesSurgical StomasGastrojejunostomy sizeObesityOne anastomosis gastric bypass

Identifiers

PMID32277357

DOI10.1007/s11695-017-2623-8

What Socratic holds

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Registered trials

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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 Socratic graph.