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Related Experiment Videos

Zonary placenta

N Y Steemers1, C De Rop, A Van Assche

  • 1Department of Obstetrics and Gynaecology, Gasthuisberg Academic Hospital, Leuven, Belgium.

International Journal of Gynaecology and Obstetrics: the Official Organ of the International Federation of Gynaecology and Obstetrics
|December 1, 1995
PubMed
Summary
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A rare ring-shaped placenta caused antepartum bleeding and fetal distress during labor induction. This case highlights the importance of recognizing and managing this unusual placental anomaly.

Area of Science:

  • Obstetrics
  • Maternal-Fetal Medicine
  • Pathology

Background:

  • Pregnancy induction is a common obstetric procedure.
  • Antepartum bleeding and fetal distress are serious obstetric complications.
  • Placental anomalies can impact pregnancy outcomes.

Observation:

  • A primipara with an uncomplicated pregnancy underwent labor induction.
  • Uterine contractions were followed by antepartum bleeding and fetal distress.
  • An anemic fetus was delivered via cesarean section.

Findings:

  • The placenta was annular (ring-shaped) with velamentous blood vessels.
  • One velamentous vessel was ruptured and sealed by a thrombus.
  • This represents an extremely rare placental morphology.

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Implications:

  • This case underscores the potential for rare placental variations to cause severe fetal compromise.
  • Early recognition and management of placental abnormalities are crucial for improving perinatal outcomes.
  • Further research into the etiology and management of annular placentas is warranted.