What is placenta accreta?


Placenta accreta, also known as placenta accreta spectrum (PAS), is a pregnancy condition in which the placenta attaches too deeply into the wall of the uterus. The risk for developing accreta increases with each C-section or uterine surgery. Other risk factors include placenta previa, advanced maternal age, multiparity, and curettage. Placenta accreta puts the mother at risk of severe blood loss and other complications. The rates of maternal death, transfusion, prolonged hospital stay and hysterectomy are all increased for women with accreta. Placenta accreta spectrum (PAS) is made up of three different levels of invasion: placenta accreta, placenta increta, and placenta percreta.

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1 in 272 Births

The estimated incidence of placenta accreta spectrum pregnancies has quadrupled since the 1980s, from 1 in 1250 births to 1 in 272 births. The rates of placenta accreta, increta and percreta have risen parallel to the overall cesarean rate in the United States.

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Accreta Patient Frequently Asked Questions

What do accreta patients need to know about placenta accreta? National Accreta Foundation produced this patient facing FAQ based on the latest literature and evidence based care recommendations for women with placenta accreta.


National Accreta Foundation is an entirely volunteer staffed and donation funded 501(c)(3) non-profit organization dedicated to placenta accreta advocacy. If you find our content of value, please consider making a tax-deductible donation to help us continue this work.