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Placenta previa: does its type affect pregnancy outcome?

Chi P Dola1, Thomas J Garite, David D Dowling

  • 1University of California, Irvine, Orange, California, USA.

American Journal of Perinatology
|December 5, 2003
PubMed
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Complete placenta previa is linked to worse pregnancy outcomes, including premature delivery and increased need for hysterectomy, compared to partial or marginal placenta previa.

Area of Science:

  • Obstetrics and Gynecology
  • Maternal-Fetal Medicine

Background:

  • Placenta previa is a significant obstetric complication.
  • Different types of placenta previa may influence pregnancy outcomes.

Purpose of the Study:

  • To compare pregnancy outcomes among different types of placenta previa: complete, partial, and marginal.
  • To identify specific risks associated with each type of placenta previa.

Main Methods:

  • Retrospective analysis of 175 singleton pregnancies with placenta previa (Jan 1990-Dec 1997).
  • Inclusion criteria: pregnancies beyond 24 weeks gestation.
  • Outcomes analyzed: onset of bleeding, antepartum hospitalization, gestation at delivery, birth weight, and hysterectomy at cesarean delivery.

Main Results:

Related Experiment Videos

  • Complete placenta previa was associated with earlier onset of bleeding (29.9 weeks) compared to partial (32.5 weeks) and marginal (32.7 weeks).
  • Higher rates of antepartum hospitalization (60.7%) and hysterectomy (20.5%) were observed in complete placenta previa cases.
  • Premature delivery (34.7 weeks gestation) and lower birth weights (2498.3 g) were noted with complete placenta previa.
  • Partial and marginal placenta previa groups showed similar outcomes and did not differ significantly from each other.

Conclusions:

  • Complete placenta previa, diagnosed via ultrasound, is associated with poorer pregnancy outcomes.
  • Women with complete placenta previa face higher risks of preterm birth and emergent hysterectomy during cesarean delivery.
  • Partial and marginal placenta previa present comparable and generally better pregnancy outcomes than complete placenta previa.