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Prognostic factors associated with antenatal subchorionic echolucencies.

Geeta Sharma1, Robin B Kalish, Stephen T Chasen

  • 1Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Weill Medical College of Cornell University, New York, NY 10021, USA. geeta_sharma@yahoo.com

American Journal of Obstetrics and Gynecology
|October 31, 2003
PubMed
Summary

Subchorionic echolucency in pregnancy is linked to a high rate of preterm delivery (PTD). Antepartum bleeding is a key indicator for predicting premature birth in these pregnancies.

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Area of Science:

  • Obstetrics and Gynecology
  • Maternal-Fetal Medicine
  • Diagnostic Ultrasound

Background:

  • Subchorionic echolucencies are commonly detected during early pregnancy ultrasound.
  • The prognostic significance of subchorionic echolucencies requires further elucidation.

Purpose of the Study:

  • To identify prognostic factors for pregnancies diagnosed with subchorionic echolucency.
  • To assess the association between subchorionic echolucency characteristics and adverse pregnancy outcomes.

Main Methods:

  • Retrospective review of 129 pregnancies with diagnosed subchorionic echolucency.
  • Ultrasound parameters analyzed: location, size, gestational age, amniotic fluid, fetal abnormalities.
  • Adverse outcomes included: pregnancy loss before 24 or 37 weeks (PTD), intrauterine growth restriction.

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Main Results:

  • A high incidence of PTD (18.6%) was observed in pregnancies with subchorionic echolucency.
  • Antepartum bleeding significantly increased the risk of PTD (26.6% vs 7.0%, P=.009).
  • Subchorionic echolucency size, gestational age at detection, amniocentesis, maternal age, and parity were not associated with PTD.

Conclusions:

  • Subchorionic echolucency is associated with a substantial risk of preterm delivery.
  • Antepartum bleeding serves as a crucial prognostic indicator for preterm delivery in this cohort.