Evidence map›Paper›PMID 39453479›Full record

ArticlePediatric nephrology (Berlin, Germany)2025

Kidney volume and function of low-birth-weight children at 5 years: impact of singleton and twin birth.

Patrik Konopásek, Aneta Kodytková, Peter Korček, Monika Pecková, Martina Frantová, Martin Kočí, Eva Flachsová, Karel Kotaška, Zbyněk Straňák, Jan Janda and 1 more

Abstract readMulticenter StudyTwin Study
In one paragraph

Article in Pediatric nephrology (Berlin, Germany), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

11 authors.

Patrik KonopásekDepartment of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu 84, Praha 5, Prague, 15006, Czech Republic. pat.konopasek@gmail.com.ORCID http://orcid.org/0000-0001-6663-4020
Aneta KodytkováDepartment of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu 84, Praha 5, Prague, 15006, Czech Republic.
Peter KorčekInstitute for the Care of Mother and Child, Neonatal Intensive Care Unit, Prague, Czech Republic.
Monika PeckováInstitute of Applied Mathematics and Information Technologies, Faculty of Science, Charles University, Prague, Czech Republic.
Martina FrantováDepartment of Obstetrics and Gynecology, Second Faculty of Medicine, Neonatal Unit, Charles University and Motol University Hospital, Prague, Czech Republic.
Martin KočíDepartment of Radiology, Second Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.
Eva FlachsováDepartment of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu 84, Praha 5, Prague, 15006, Czech Republic.
Karel KotaškaDepartment of Medical Chemistry and Clinical Biochemistry, Second Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.
Zbyněk StraňákInstitute for the Care of Mother and Child, Neonatal Intensive Care Unit, Prague, Czech Republic.
Jan JandaDepartment of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu 84, Praha 5, Prague, 15006, Czech Republic.
Jakub ZiegDepartment of Pediatrics, Second Faculty of Medicine, Charles University and Motol University Hospital, V Úvalu 84, Praha 5, Prague, 15006, Czech Republic.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMany studies have demonstrated the association between low birth weight (LBW) and chronic kidney disease, estimated glomerular filtration rate (eGFR) and kidney volume (KV). However, studies on twins and those investigating numerous perinatal factors beyond LBW, and their associations with various kidney parameters are scarce.

methodsA two-center cross-sectional study on five-year-old LBW children was conducted between 2021 and 2023. 110 children were enrolled (8 LBW, 58 very LBW (VLBW), 44 extremely LBW (ELBW)); 56 were twins. We examined associations between birth weight (BW), various prenatal, perinatal and postnatal factors, and eGFR, KV, tubular abnormalities and kidney ultrasound abnormalities, both in singletons and twins.

resultsIn children with ELBW, eGFR correlated with BW (r = 0.55, P = 0.0018), while in those with BW ≥ 1000 g, eGFR remained constant. Other factors associated with decreased eGFR were hypertensive disorder of pregnancy (93.86 vs. 87.26 ml/min/1.73m

conclusionMany factors affect eGFR and KV, some of them differ between twins and singletons. Based on multivariable models, eGFR seems to be better predicted by KV than by BW and gestational age in LBW children. Relative kidney volumes were significantly lower in our cohort compared to the reference population, but only 8.6% of rKV were below 10

Indexed as

Infant, Low Birth WeightKidneyRenal Insufficiency, ChronicBirth WeightChild, PreschoolCross-Sectional StudiesFemaleGlomerular Filtration RateHumansInfant, NewbornMaleOrgan SizePregnancyTwins5-year-old childrenGlomerular filtration rateKidney volumeLow birth weightPrematurityTwins

Identifiers

PMID39453479
PMCPMC11746971

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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.