Evidence map›Paper›PMID 33637973›Full record

ArticleEuropean journal of clinical nutrition2021

Association of cesarean delivery on maternal request with neonatal iron stores at birth.

Zijun Liao, Yubo Zhou, Aiju Liu, Hongtian Li, Rachel L Peters, Jianmeng Liu

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Article in European journal of clinical nutrition, 2021. 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. Trial
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

6 authors.

Zijun Liao *Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing, China.ORCID http://orcid.org/0000-0002-5281-9216
Yubo Zhou *Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing, China.ORCID http://orcid.org/0000-0002-0696-1123
Aiju LiuInner Mongolia Maternal and Child Health Care Hospital, Hohhot, Inner Mongolia, China.
Hongtian LiInstitute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing, China.
Rachel L PetersMurdoch Children's Research Institute, Royal Children's Hospital, Parkville, VIC, Australia.
Jianmeng LiuInstitute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing, China. liujm@pku.edu.cn.ORCID http://orcid.org/0000-0002-3220-6084

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCesarean has been suggested to decrease neonatal iron stores at birth. However, few studies have differentiated the effect induced by cesarean operation from that related to medical indications.

objectivesWe aimed to estimate the association of cesarean delivery on maternal request (CDMR), a subtype of cesarean without any medical indications, with a spectrum of indicators reflecting iron stores at birth.

methodsThis prospective cohort study involved 288 term singleton neonates born to women without any complications by CDMR or spontaneous vaginal delivery (SVD). Measured hematological iron-related indicators in cord blood included serum ferritin (SF), hemoglobin (Hb), red blood cell (RBC), and hematocrit (Hct). Blood flow volume (BFV) of cord vein when clamping was measured to reflect placental transfusion status during birth. Quantile regression was used to assess the association between delivery mode and the iron store indicators.

resultsCDMR (n = 154) versus SVD group (n = 134) had lower conditional median cord blood SF (-34.80; 95% CI -64.70, -4.90 μg/L; P = 0.02), Hb (-10.67; 95% CI -18.87, -2.47 g/L; P = 0.01), RBC (-0.30; 95% CI -0.48, -0.12 ×10

conclusionsThe cesarean operation per se likely hampered placental transfusion from mother to neonate and decreased iron stores at birth.

Indexed as

IronPlacentaCesarean SectionDelivery, ObstetricFemaleHumansInfant, NewbornPregnancyProspective StudiesIron

Identifiers

PMID33637973

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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.