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Related Concept Videos

Fetal Circulation01:14

Fetal Circulation

Fetal circulation is a unique system that facilitates the exchange of gases, nutrients, and waste products between the developing fetus and the mother. This intricate process takes place through a special organ called the placenta.
Two umbilical arteries transport blood from the fetus to the placenta. At the placenta, the blood absorbs oxygen and nutrients while simultaneously eliminating waste products. This oxygen-enriched and nutrient-rich blood then returns to the fetus through one...

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Related Experiment Video

Updated: Jun 7, 2026

Mouse Model of Surgical Uterine Injury and Subsequent Pregnancy Outcomes
04:08

Mouse Model of Surgical Uterine Injury and Subsequent Pregnancy Outcomes

Published on: June 27, 2025

Placenta accreta.

1, Michael A Belfort

  • 1Society for Maternal-Fetal Medicine, 409 12 St. SW, Washington, DC 20024, USA. pubs@smfm.org

American Journal of Obstetrics and Gynecology
|November 9, 2010
PubMed
Summary
This summary is machine-generated.

Abnormal placentation, including placenta accreta, increta, and percreta, is rising. Early diagnosis and coordinated management are crucial for improving maternal outcomes in these high-risk pregnancies.

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Area of Science:

  • Obstetrics and Gynecology
  • Maternal-Fetal Medicine
  • Reproductive Health

Background:

  • Abnormal placentation, specifically placenta accreta, increta, and percreta, represents a significant and increasing obstetric complication.
  • These conditions pose substantial risks to maternal health, necessitating specialized management strategies.

Purpose of the Study:

  • To review the risks associated with placenta accreta, increta, and percreta.
  • To provide guidance on interventions aimed at improving maternal outcomes in cases of abnormal placental implantation.

Main Methods:

  • A comprehensive literature search was conducted using PubMed, focusing on publications related to "accreta," "increta," or "percreta" from January 1990 to January 2010.
  • Included studies involved human subjects, and additional information was gathered from reference lists, review articles, and guidelines from professional organizations.
  • Article quality was assessed using the US Preventative Services Task Force criteria.

Main Results:

  • Abnormal placentation is becoming more prevalent.
  • Evidence from randomized controlled trials and large cohort studies is limited, highlighting the need for proactive management strategies.
  • Early diagnosis, particularly in women with placenta previa over a uterine scar, is essential.

Conclusions:

  • Women with placenta previa overlying a uterine scar require evaluation for placenta accreta, with reevaluation in the third trimester if identified early.
  • Anticipating the need for hysterectomy and planning delivery at a specialized center with massive transfusion capabilities are critical when placenta accreta is diagnosed prenatally.
  • Meticulous attention to intraoperative blood loss and timely blood product replacement are key to reducing perioperative complications.