Evidence map›Paper›PMID 34665928›Full record

Observational studyBJOG : an international journal of obstetrics and gynaecology2022

First-trimester maternal haemodynamic adaptation to pregnancy and placental, embryonic and fetal development: the prospective observational Rotterdam Periconception cohort.

I F Reijnders, Agmgj Mulders, Mph Koster, Atm Kropman, Ahj Koning, S P Willemsen, Eap Steegers, Rpm Steegers-Theunissen

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in BJOG : an international journal of obstetrics and gynaecology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
1.1field-weighted citation impact, top 20% of its field
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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 12 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Observational
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

8 authors at 1 institution in 1 country.

I F ReijndersDepartment of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands.
Agmgj MuldersDepartment of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands.
Mph KosterDepartment of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands.
Atm KropmanDepartment of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands.
Ahj KoningDepartment of Pathology, Clinical Bioinformatics Unit Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands.
S P WillemsenDepartment of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands.
Eap SteegersDepartment of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands.
Rpm Steegers-TheunissenDepartment of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands.ORCID https://orcid.org/0000-0002-4353-5756
Erasmus MC · NL

Funding

Department of Obstetrics and Gynaecology of the Erasmus MC, University Medical Centre, Rotterdam, The Netherlands
6 · The paper itself

Abstract

objectiveTo investigate whether first-trimester maternal haemodynamic adaptation impacts placental, embryonic and fetal development as well as birth outcomes in pregnancies with and without placenta-related complications.

designProspective observational cohort.

settingA Dutch tertiary hospital. POPULATION: Two hundred and fourteen ongoing pregnancies.

methodsAt 7, 9 and 11 weeks of gestation, we assessed maternal haemodynamic adaptation (mean arterial blood pressure [MAP], uterine artery [UtA] blood flow) and placental development (placental volume [PV], uteroplacental vascular volume [uPVV]) using three-dimensional power Doppler ultrasound volumes, and embryonic development (crown-rump length, embryonic volume). At 22 and 32 weeks of gestation, fetal development was assessed by estimated fetal weight. Birth outcomes (birthweight, placental weight) were extracted from medical records. Linear mixed modelling and linear regression analyses were applied.

main outcome measuresBirthweight centile and placental weight.

resultsIn placenta-related complications (n= 55, 25.7%), reduced haemodynamic adaptation, i.e. higher UtA pulsatility index (PI) and resistance index (RI) trajectories, was associated with smaller increase in PV (β = -0.559, 95% CI -0.841 to -0.278, P< 0.001; β = -0.579, 95% CI -0.878 to -0.280, P< 0.001) and uPVV trajectories (UtA PI: β = -0.301, 95% CI -0.578 to -0.023, P= 0.034). At birth, reduced haemodynamic adaptation was associated with lower placental weight (UtA PI: β = -0.502, 95% CI -0.922 to -0.082, P= 0.022; UtA RI: β = -0.435, 95% CI -0.839 to -0.032, P= 0.036). In pregnancies without placenta-related complications, higher MAP trajectories were positively associated with birthweight centile (β = 0.398, 95% CI 0.049-0.748, P= 0.025).

conclusionsReduced first-trimester maternal haemodynamic adaptation impacts both placental size and vascularisation and birthweight centile, in particular in pregnancies with placenta-related complications. TWEETABLE ABSTRACT: Reduced first-trimester maternal haemodynamic adaptation to pregnancy impairs early placental development.

Indexed as

PlacentaPlacentationFemaleHemodynamicsHumansInfant, NewbornPregnancyPregnancy Trimester, FirstProspective StudiesUltrasonography, PrenatalUterine Artery3D ultrasoundbirth outcomesplacenta-related complicationsuterine artery blood flow

Identifiers

PMID34665928
PMCPMC9298112
OpenAlexW3207593637

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.