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Updated: Dec 29, 2025

Mouse Model of Surgical Uterine Injury and Subsequent Pregnancy Outcomes
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Placental Implantation Disorders.

Eric Jauniaux1, Ashley Moffett2, Graham J Burton3

  • 1Academic Department of Obstetrics and Gynaecology, The EGA Institute for Women's Health, University College London (UCL), 86-96 Chenies Mews, London WC1E 6HX, UK.

Obstetrics and Gynecology Clinics of North America
|February 4, 2020
PubMed
Summary

Primary placental implantation disorders significantly impact pregnancy outcomes. Increased rates are linked to assisted reproductive technologies like in vitro fertilization (IVF) and cesarean deliveries.

Keywords:
AccretaCesarean sectionCircumvallateIn vitro fertilizationPlacentaPreviaVelamentous insertion

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Area of Science:

  • Obstetrics and Gynecology
  • Reproductive Medicine

Background:

  • Primary disorders of placental implantation are known clinical issues impacting pregnancy outcomes.
  • Historically rare, these conditions have seen a notable increase in incidence over the past two decades.

Purpose of the Study:

  • To investigate the iatrogenic factors contributing to the rising incidence of primary placental implantation disorders.
  • To identify associations between assisted reproductive technologies, delivery methods, and specific placental implantation abnormalities.

Main Methods:

  • Review of recent epidemiologic obstetric data.
  • Analysis of trends in pregnancies resulting from in vitro fertilization (IVF).
  • Correlation of cesarean section rates with placental implantation disorders.

Main Results:

  • The rise in placental implantation disorders is iatrogenic.
  • Increased IVF pregnancies and cesarean deliveries are associated with higher frequencies of previa implantation, accreta placentation, abnormal placental shapes, and velamentous cord insertion.
  • These disorders frequently co-occur.

Conclusions:

  • Assisted reproductive technologies and changes in delivery practices are driving the increase in placental implantation disorders.
  • These conditions pose significant risks to pregnancy outcomes.
  • Further research into prevention and management strategies is warranted.