Evidence map›Paper›PMID 25576820›Full record

ArticleAmerican journal of obstetrics and gynecology2015

Pregnancy induces persistent changes in vascular compliance in primiparous women.

Erin A Morris, Sarah A Hale, Gary J Badger, Ronald R Magness, Ira M Bernstein

Open access · greenAbstract read
In one paragraph

Article in American journal of obstetrics and gynecology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
5.3field-weighted citation impact, top 4% 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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 78 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Pregnancy-acquired memory CD4Nature communications · 2025
    Article
  4. Prepregnancy physiology and subsequent preterm preeclampsia.American journal of obstetrics and gynecology · 2025
    Article
  5. Article
  6. Placental syndromes and maternal cardiovascular health.Clinical science (London, England : 1979) · 2023
    Review
  7. Article
  8. Article
  9. Review
  10. A Framework for Understanding Maternal Immunity.Immunology and allergy clinics of North America · 2023
    Review
  11. Article
  12. COVID-19 in pregnancy: possible mechanisms not to be discounted.The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians · 2022
    Article
  13. Article
  14. Article
  15. Article
  16. Observational
  17. Article
  18. Article
  19. Article
  20. 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

5 authors at 3 institutions in 1 country.

Erin A MorrisDepartment of Obstetrics, Gynecology, and Reproductive Sciences, University of Vermont College of Medicine, Burlington, VT.
Sarah A HaleDepartment of Obstetrics, Gynecology, and Reproductive Sciences, University of Vermont College of Medicine, Burlington, VT.
Gary J BadgerDepartment of Medical Biostatistics, University of Vermont College of Medicine, Burlington, VT.
Ronald R MagnessDepartment of Obstetrics and Gynecology, Perinatal Research Laboratories, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI.
Ira M BernsteinDepartment of Obstetrics, Gynecology, and Reproductive Sciences, University of Vermont College of Medicine, Burlington, VT. Electronic address: ira.bernstein@uvm.edu.
University of Vermont · USUniversity of Vermont Medical Center · USUniversity of Wisconsin–Madison · US

Funding

WEIGHT MAINTENANCE AND PSYCHOLOGICAL BENEFITS OF EXERCISEM01RR000109 · NCRR · UNIVERSITY OF VERMONT &ST AGRIC COLLEGE · PI KIRKPATRICK, BETH DIANE · 1985 to 2010
$24.3M
Unified Cellular and Molecular CoreP01HD038843 · NICHD · UNIVERSITY OF WISCONSIN-MADISON · PI ZHENG, JING · 2001 to 2017
$14.4M
Prepregnancy Phenotype &Predisposition to Pre-eclampsiaR01HL071944 · NHLBI · UNIVERSITY OF VERMONT &ST AGRIC COLLEGE · PI BERNSTEIN, IRA MARK · 2004 to 2014
$3.0M
Endothelial Function in a Model of IUGR Induced by Uterine Space RestrictionR01HL117341 · NHLBI · UNIVERSITY OF WISCONSIN-MADISON · PI MAGNESS, RONALD R · 2014 to 2017
$1.8M
NCRR NIH HHS M01 RR000109NHLBI NIH HHS R01 HL 071944NHLBI NIH HHS R01 HL071944NHLBI NIH HHS R01 HL 117341NHLBI NIH HHS R01 HL117341NICHD NIH HHS P01 HD038843NICHD NIH HHS P01 HD38843
6 · The paper itself

Abstract

objectivePregnancy induces rapid, progressive, and substantial changes to the cardiovascular system. The low recurrence risk of preeclampsia, despite familial predisposition, suggests an adaptation associated with pregnancy that attenuates the risk for subsequent preeclampsia. We aimed to evaluate the persistent effect of pregnancy on maternal cardiovascular physiology. STUDY

designForty-five healthy nulliparous women underwent baseline cardiovascular assessment before conception and repeated an average of 30 months later. After baseline evaluation, 17 women conceived singleton pregnancies and all delivered at term. The remaining 28 women comprised the nonpregnant control group. We measured mean arterial blood pressure, cardiac output, plasma volume, pulse wave velocity, uterine blood flow, and flow-mediated vasodilation at each visit.

resultsThere was a significant decrease in mean arterial pressure from the prepregnancy visit to postpartum in women with an interval pregnancy (prepregnancy, 85.3±1.8; postpartum, 80.5±1.8 mm Hg), with no change in nonpregnant control subjects (visit 1, 80.3±1.4; visit 2, 82.8±1.4 mm Hg) (P=.002). Pulse wave velocity was significantly decreased in women with an interval pregnancy (prepregnancy, 2.73±0.05; postpartum, 2.49±0.05 m/s), as compared with those without an interval pregnancy (visit 1, 2.56±0.04; visit 2, 2.50±0.04 m/s) (P=.005). We did not observe a residual effect of pregnancy on cardiac output, plasma volume, uterine blood flow, or flow-mediated vasodilation.

conclusionOur observations of decreased mean arterial pressure and reduced arterial stiffness following pregnancy suggest a significant favorable effect of pregnancy on maternal cardiovascular remodeling. These findings may represent a mechanism by which preeclampsia risk is reduced in subsequent pregnancies.

Indexed as

AdultArterial PressureCardiac OutputCase-Control StudiesEchocardiography, DopplerFemaleHumansParityPlasma VolumePostpartum PeriodPregnancyPulse Wave AnalysisUltrasonography, Doppler, ColorUterusVascular StiffnessVasodilationcardiovascular remodelinghypertensionpreeclampsiapregnancyvascular stiffness

Identifiers

PMID25576820
PMCPMC4417012
OpenAlexW2074975316

What OpenQuestion holds

Textmetadata
LicenceTDM
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.