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Modeling Ascending Vaginal Infection, Preterm Birth, and Neonatal Morbidity in Mice
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Modeling Ascending Vaginal Infection, Preterm Birth, and Neonatal Morbidity in Mice

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Preterm Delivery; Who Is at Risk?

Dvora Kluwgant1, Tamar Wainstock2, Eyal Sheiner1

  • 1Soroka University Medical Center, Department of Obstetrics and Gynecology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8400711, Israel.

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|June 2, 2021
PubMed
Summary

Placental abruption is the leading risk factor for extreme preterm birth (PTB). Risk factors for PTB did not significantly differ across various maternal subgroups, including those with multiple gestations or prior PTB.

Keywords:
extreme preterm birthplacental abruptionprematuritypreterm birth

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Area of Science:

  • Obstetrics and Gynecology
  • Neonatal Perinatal Medicine
  • Epidemiology

Background:

  • Preterm birth (PTB) is a primary cause of infant illness and death.
  • Infants born extremely preterm (24-28 weeks gestation) face the most severe health challenges.
  • Identifying risk factors for extreme PTB is crucial for improving neonatal outcomes.

Purpose of the Study:

  • To identify key risk factors associated with extreme preterm birth (PTB).
  • To investigate whether these risk factors vary across different maternal subpopulations, such as those with multiple gestations or a history of PTB.

Main Methods:

  • A population-based retrospective cohort study was conducted.
  • Analyzed data from 334,415 deliveries, focusing on 1155 cases of extreme PTB (24-28 weeks gestation).
  • Examined risk factors in the general population and specific subgroups: multiple gestations, previous PTB, and indicated/induced PTB.

Main Results:

  • Placenta previa (OR=5.8), multiple gestations (OR=7.7), and placental abruption (OR=20.6) were significant risk factors for extreme PTB.
  • Placental abruption emerged as the strongest risk factor across all analyzed groups.
  • Risk factors for extreme PTB showed minimal significant variation among the studied subpopulations.

Conclusions:

  • Placental abruption is a critical risk factor for extreme preterm birth.
  • The identified risk factors for extreme PTB are consistent across various maternal subgroups.
  • Further research into these risk factors may inform targeted interventions to reduce extreme PTB rates.