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Related Experiment Videos

Amniotic fluid phospholipids and foetal lung maturation.

A Zapata1, J M Hernández-García, P de la Fuente

  • 1Biochemistry Service, La Paz Hospital, Madrid, Spain.

Scandinavian Journal of Clinical and Laboratory Investigation
|February 1, 1988
PubMed
Summary

Amniotic fluid analysis reveals that surfactant levels, indicated by the lecithin/sphingomyelin ratio and phosphatidyl-glycerol presence, mature significantly around 35-37 weeks of pregnancy. This maturation correlates well with newborn respiratory function.

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Area of Science:

  • Obstetrics and Gynecology
  • Neonatal Medicine
  • Biochemistry

Background:

  • Fetal lung maturity is crucial for neonatal respiratory health.
  • Amniotic fluid analysis can predict fetal lung development.

Purpose of the Study:

  • To assess the development of fetal lung surfactant in normal pregnancies.
  • To correlate surfactant levels with gestational age and newborn respiratory outcomes.

Main Methods:

  • Quantitative lipid extraction from amniotic fluid samples.
  • Two-dimensional chromatography for phospholipid isolation.
  • Analysis of lecithin/sphingomyelin ratio and phosphatidyl-glycerol presence.

Main Results:

  • Lecithin/sphingomyelin ratio significantly increased between 35-36 weeks.

Related Experiment Videos

  • Phosphatidyl-glycerol was detected from 35 weeks onwards.
  • Mature surfactant incidence rose from 9% at 35 weeks to 100% by 37 weeks.
  • Amniotic fluid surfactant levels correlated well with newborn respiratory function.

    • Conclusions:

    • Fetal lung surfactant matures significantly between 35 and 37 weeks of gestation.
    • The lecithin/sphingomyelin ratio and phosphatidyl-glycerol are reliable indicators of lung maturity.
    • Assessing amniotic fluid surfactant is valuable for predicting neonatal respiratory outcomes.