Evidence map›Paper›PMID 39354115›Full record

ArticleArchives of gynecology and obstetrics2025

Effect of chorioamnionitis on postnatal growth in very preterm infants: a population-based study in Japan.

Takafumi Ushida, Rena Nosaka, Masahiro Nakatochi, Yumiko Kobayashi, Sho Tano, Kazuya Fuma, Seiko Matsuo, Kenji Imai, Yoshiaki Sato, Masahiro Hayakawa and 3 more

Abstract readMulticenter Study
In one paragraph

Article in Archives of gynecology and obstetrics, 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. Review
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.

Takafumi UshidaDepartment of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan. u-taka23@med.nagoya-u.ac.jp.ORCID http://orcid.org/0000-0002-8042-5919
Rena NosakaDepartment of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan.
Masahiro NakatochiPublic Health Informatics Unit, Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Yumiko KobayashiData Science Division, Data Coordinating Center, Department of Advanced Medicine, Nagoya University Hospital, Nagoya, Japan.
Sho TanoDepartment of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan.
Kazuya FumaDepartment of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan.
Seiko MatsuoDepartment of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan.
Kenji ImaiDepartment of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan.
Yoshiaki SatoDivision of Neonatology, Center for Maternal-Neonatal Care, Nagoya University Hospital, Nagoya, Japan.
Masahiro HayakawaDivision of Neonatology, Center for Maternal-Neonatal Care, Nagoya University Hospital, Nagoya, Japan.
Hiroaki KajiyamaDepartment of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan.
Tomomi KotaniDepartment of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan.
Neonatal Research Network of Japan

Funding

Japan Society for the Promotion of Science 22K16857
6 · The paper itself

Abstract

purposeThere is growing evidence that preterm infants born to mothers with chorioamnionitis (CAM) have increased risk of various neonatal morbidities and long-term neurological disorders; however, the effect of CAM on postnatal growth remains insufficiently investigated. This study evaluated the effect of histological CAM on postnatal growth trajectories in very preterm infants using a nationwide neonatal database in Japan.

methodA multicenter retrospective study was conducted using clinical data of 4220 preterm neonates who weighed ≤ 1500 g and were born at < 32 weeks of gestation between 2003-2017 (CAM group: n = 2110; non-CAM group: n = 2110). Z-scores for height and weight were evaluated at birth and 3 years of age. Univariable and multivariable analyses were conducted to evaluate the effect of histological CAM on ΔZ-scores of height and weight during the first three years with a stratification by infant sex and the stage of histological CAM.

resultsMultivariable analyses showed that histological CAM was associated with accelerated postnatal increase (ΔZ-score) in weight (β coefficient [95% confidence interval]; 0.10 [0.00 to 0.20]), but not in height among females (0.06 [- 0.04 to 0.15]) and not in height and weight among males (0.04 [- 0.04 to 0.12] and 0.02 [- 0.07 to 0.11], respectively). An interaction analysis demonstrated no significant difference in the effect of histological CAM on the ΔZ-scores of height and weight during the first three years between male and female infants (height, p = 0.81; weight p = 0.25).

conclusionsIntrauterine exposure to maternal CAM contributes to accelerated postnatal weight gain in female preterm infants during the first three years.

Indexed as

Child DevelopmentChorioamnionitisInfant, Extremely PrematureInfant, PrematureBody HeightChild, PreschoolFemaleHumansInfantInfant, NewbornJapanMalePregnancyRetrospective StudiesCatch-up growthHistological chorioamnionitisInflammationPreterm birth

Identifiers

PMID39354115
PMCPMC12033191

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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.