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Fetal Echocardiography and Pulsed-wave Doppler Ultrasound in a Rabbit Model of Intrauterine Growth Restriction
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Mending a growth-restricted fetal heart: should we use glucocorticoids?

Ryan J Hodges1, Euan M Wallace

  • 1Maternal Fetal Medicine, Monash Medical Centre, Southern Health, Victoria, Australia.

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
|July 7, 2012
PubMed

Insights

Growth-restricted fetuses receiving antenatal glucocorticoids show cardiovascular changes. These changes may negatively impact fetal development and compensation for placental insufficiency, especially in severe cases.

Area of Science:

  • Perinatology
  • Fetal Physiology
  • Cardiovascular Medicine

Background:

  • Fetal growth restriction (FGR) is linked to impaired cardiovascular function and increased mortality.
  • FGR fetuses often receive antenatal glucocorticoids for lung maturation due to high preterm birth risk.
  • Glucocorticoids can alter vascular tone, potentially affecting FGR fetuses differently than healthy ones.

Purpose of the Study:

  • To investigate the cardiovascular effects of antenatal glucocorticoids in intrauterine growth restriction (IUGR) fetuses.
  • To determine if glucocorticoid administration exacerbates complications in IUGR fetuses.

Main Methods:

  • Review of clinical and experimental studies on FGR and antenatal glucocorticoid exposure.
  • Analysis of cardiovascular changes in IUGR fetuses following glucocorticoid treatment.

Main Results:

  • Antenatal glucocorticoids induce systemic cardiovascular changes in IUGR fetuses.
  • These changes are not observed in healthy, normally grown fetuses.
  • Glucocorticoid responses may impair the IUGR fetus' ability to adapt to placental insufficiency.

Conclusions:

  • Antenatal glucocorticoid administration may be detrimental to IUGR fetuses, particularly in severe cases.
  • Further research is needed to understand the risks versus benefits of glucocorticoids in FGR pregnancies.

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