Evidence map›Paper›PMID 39861469›Full record

Observational studyNutrients2025

Iron Deficiency Anemia Following Bariatric Surgery: A 10-Year Prospective Observational Study.

Kinga Kędzierska, Marcin Dymkowski, Wiktoria Niegowska, Maria Humięcka, Ada Sawicka, Iwona Walczak, Zofia Maria Jędral, Michał Wąsowski, Agata Bogołowska-Stieblich, Artur Binda and 3 more

Abstract readObservational Study
In one paragraph

Observational study in Nutrients, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
–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

11 citing papers in PubMed.

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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

13 authors.

Kinga KędzierskaDepartment of Internal Medicine and Geriatric Cardiology, Centre of Postgraduate Medical Education, Orlowski Hospital, 00-416 Warsaw, Poland.ORCID 0009-0000-6388-9044
Marcin DymkowskiDepartment of Internal Medicine and Geriatric Cardiology, Centre of Postgraduate Medical Education, Orlowski Hospital, 00-416 Warsaw, Poland.ORCID 0009-0004-4689-2099
Wiktoria NiegowskaDepartment of Internal Medicine and Geriatric Cardiology, Centre of Postgraduate Medical Education, Orlowski Hospital, 00-416 Warsaw, Poland.
Maria HumięckaDepartment of Internal Medicine and Geriatric Cardiology, Centre of Postgraduate Medical Education, Orlowski Hospital, 00-416 Warsaw, Poland.
Ada SawickaDepartment of Internal Medicine and Geriatric Cardiology, Centre of Postgraduate Medical Education, Orlowski Hospital, 00-416 Warsaw, Poland.
Iwona WalczakDepartment of Internal Medicine and Geriatric Cardiology, Centre of Postgraduate Medical Education, Orlowski Hospital, 00-416 Warsaw, Poland.
Zofia Maria JędralDepartment of Internal Medicine and Geriatric Cardiology, Centre of Postgraduate Medical Education, Orlowski Hospital, 00-416 Warsaw, Poland.
Michał WąsowskiDepartment of Internal Medicine and Geriatric Cardiology, Centre of Postgraduate Medical Education, Orlowski Hospital, 00-416 Warsaw, Poland.
Agata Bogołowska-StieblichDepartment of Internal Medicine and Geriatric Cardiology, Centre of Postgraduate Medical Education, Orlowski Hospital, 00-416 Warsaw, Poland.
Artur BindaDepartment of General, Oncological and Bariatric Surgery, Medical Centre of Postgraduate Education, Orlowski Hospital, 00-416 Warsaw, Poland.
Paweł JaworskiDepartment of General, Oncological and Bariatric Surgery, Medical Centre of Postgraduate Education, Orlowski Hospital, 00-416 Warsaw, Poland.
Wiesław TarnowskiDepartment of General, Oncological and Bariatric Surgery, Medical Centre of Postgraduate Education, Orlowski Hospital, 00-416 Warsaw, Poland.
Piotr JankowskiDepartment of Internal Medicine and Geriatric Cardiology, Centre of Postgraduate Medical Education, Orlowski Hospital, 00-416 Warsaw, Poland.ORCID 0000-0001-6223-8821

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe long-term follow-up studies investigating the risk of anemia and iron deficiency following bariatric procedures are scarce. This study aimed to determine the influence of body weight reduction and type of bariatric surgery on iron metabolism parameters.

methodsWe included 138 consecutive patients who underwent bariatric surgery (120 underwent sleeve gastrectomy and 18 underwent other types of bariatric surgery) between 2010 and 2016. At baseline and at follow-up (median observation: 10 years), examination weight and height were measured, and blood samples for iron metabolism parameters were taken.

resultsRed blood cells (4.75 [4.59-4.96] 10

conclusionsAge, initial hemoglobin concentration, and type of bariatric procedure but not sex, baseline iron serum level, or weight change are related to the risk of anemia in the long-term follow-up following bariatric surgery.

Indexed as

Anemia, Iron-DeficiencyBariatric SurgeryAdultFemaleFolic AcidFollow-Up StudiesHemoglobinsHumansIronMaleMiddle AgedPrevalenceProspective StudiesRisk FactorsWeight LossFolic AcidHemoglobinsIronanemiabariatricironsurgery

Identifiers

PMID39861469
PMCPMC11768030

What OpenQuestion 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 OpenQuestion graph.