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Meconium-stained amniotic fluid exposure is associated with a lower incidence of offspring long-term infectious

Dorit Paz Levy1, Asnat Walfisch1, Tamar Wainstock2

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

American Journal of Reproductive Immunology (New York, N.Y. : 1989)
|March 1, 2019
PubMed
Abstract

Insights

Exposure to meconium-stained amniotic fluid (MSAF) during labor may protect children from long-term infectious diseases. This study found lower hospitalization rates for infections in children exposed to MSAF, suggesting a potential protective effect against pediatric infectious morbidity.

Area of Science:

  • Obstetrics and Gynecology
  • Neonatal Medicine
  • Pediatric Infectious Diseases

Background:

  • Meconium-stained amniotic fluid (MSAF) is a known risk factor for immediate adverse neonatal outcomes.
  • Emerging evidence suggests MSAF may be linked to microbial invasion of the amniotic cavity.
  • The long-term impact of MSAF exposure on pediatric infectious morbidity remains unclear.

Purpose of the Study:

  • To investigate the association between MSAF exposure during labor and long-term pediatric infectious morbidity.
  • To determine if MSAF exposure influences the risk of hospitalizations due to infectious diseases up to age 18.

Main Methods:

  • Population-based cohort analysis of singleton deliveries from 1991-2014.
  • Exposure defined as the presence of MSAF during labor.
  • Evaluation of offspring hospitalizations for infectious diseases up to age 18 using Kaplan-Meier curves and Cox regression.

Main Results:

  • A total of 243,725 deliveries were analyzed, with 14.7% involving MSAF.
  • Children exposed to MSAF had significantly lower rates of infectious-related hospitalizations (10.8% vs 11.1%, P < 0.05).
  • Specifically, respiratory infection hospitalizations were less common in the MSAF group (5.1% vs 5.6%, P < 0.001), with significantly lower cumulative infectious morbidity (log rank P < 0.001).

Conclusions:

  • Fetal exposure to MSAF during labor is associated with reduced rates of long-term infectious-related hospitalizations in offspring.
  • This suggests a potential protective effect of MSAF exposure against developing certain childhood infections.
  • Further research is warranted to elucidate the mechanisms behind this observed association.
Keywords:
follow upimmune maturationmicrobiompediatric morbidityrespiratory infections

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