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Abnormal placentation: twenty-year analysis.

Serena Wu1, Masha Kocherginsky, Judith U Hibbard

  • 1Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, University of Chicago, Ill, USA.

American Journal of Obstetrics and Gynecology
|May 20, 2005
PubMed
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The incidence of placenta accreta has risen alongside cesarean delivery rates. Key risk factors include advanced maternal age, prior cesarean births, and placenta previa.

Area of Science:

  • Obstetrics and Gynecology
  • Perinatal Medicine
  • Reproductive Health

Background:

  • The cesarean delivery rate has significantly increased globally.
  • Abnormal placentation, particularly placenta accreta, is a serious obstetric complication.
  • Understanding trends and risk factors for placenta accreta is crucial for maternal health.

Purpose of the Study:

  • To investigate the association between rising cesarean delivery rates and the incidence of abnormal placentation.
  • To evaluate the incidence, identify risk factors, and assess outcomes of placenta accreta.
  • To analyze trends in placenta accreta over a 20-year period.

Main Methods:

  • A retrospective study analyzing 64,359 deliveries from 1982 to 2002.
  • Cases of placenta accreta identified by histopathologic or strong clinical criteria.

Related Experiment Videos

  • A matched case-control study assessed risk factors using conditional logistic regression models.

    • Main Results:

    • Cesarean delivery rates increased from 12.5% in 1982 to 23.5% in 2002.
    • The overall incidence of placenta accreta was 1 in 533 deliveries.
    • Significant risk factors identified: advanced maternal age (OR 1.13), two or more cesarean deliveries (OR 8.6), and placenta previa (OR 51.4).

    Conclusions:

    • The rate of placenta accreta has increased concurrently with cesarean deliveries.
    • Previous cesarean delivery, placenta previa, and advanced maternal age are the most significant risk factors for placenta accreta.
    • These findings highlight the importance of monitoring and managing risk factors for abnormal placentation.