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Chorioamnionitis, mechanical ventilation, and postnatal sepsis as modulators of chronic lung disease in preterm

Linda J Van Marter1, Olaf Dammann, Elizabeth N Allred

  • 1Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA.

The Journal of Pediatrics
|February 28, 2002
PubMed

Insights

Antenatal infection (chorioamnionitis) combined with prolonged mechanical ventilation or postnatal infection significantly increases chronic lung disease (CLD) risk in preterm infants.

Area of Science:

  • Neonatal Medicine
  • Pulmonology
  • Perinatal Epidemiology

Background:

  • Chronic lung disease (CLD) remains a significant concern in preterm infants.
  • Antenatal infections, such as chorioamnionitis, are suspected contributors to CLD.
  • The interplay between chorioamnionitis and postnatal factors in CLD development requires further investigation.

Purpose of the Study:

  • To evaluate the hypothesis that chorioamnionitis promotes CLD in preterm infants.
  • To investigate the interaction between chorioamnionitis and other risk factors, including mechanical ventilation and postnatal infection.

Main Methods:

  • A case-control study was conducted with 193 preterm infants (
  • Cases were matched 1:1 with control infants based on gestational age and hospital of birth.
  • Univariable and multivariable logistic regression analyses were employed to assess risk factors.

Main Results:

  • Histologic chorioamnionitis was associated with decreased CLD risk in univariable analysis.
  • Mechanical ventilation >7 days and culture-documented sepsis were linked to increased CLD risk.
  • Multivariable analysis revealed a significantly elevated risk of CLD when chorioamnionitis co-occurred with prolonged mechanical ventilation (OR, 3.2) or postnatal infection (OR, 2.9).

Conclusions:

  • Prolonged mechanical ventilation and postnatal infection independently increase CLD risk in surviving preterm infants.
  • These factors interact synergistically with antenatal infection (chorioamnionitis) to further elevate CLD risk.
  • Targeting antenatal and postnatal infections may be crucial for preventing CLD in vulnerable preterm populations.
Abstract

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