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Amniotic fluid surface tension during pregnancy.

F F Rubaltelli, U Andreozzi, C Zorzi

    Biology of the Neonate
    |January 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

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    Amniotic fluid surface tension correlates well with gestational age and lecithin concentration. This finding supports the use of the foam test for assessing fetal lung maturity in normal pregnancies.

    Area of Science:

    • Obstetrics and Gynecology
    • Perinatal Medicine
    • Biochemistry

    Background:

    • Amniotic fluid composition changes throughout pregnancy.
    • Surface tension of amniotic fluid is influenced by surfactant components like lecithin.
    • Assessing fetal lung maturity is crucial for managing high-risk pregnancies.

    Purpose of the Study:

    • To investigate the correlation between amniotic fluid surface tension and gestational age.
    • To examine the relationship between amniotic fluid lecithin concentration and surface tension.
    • To evaluate the utility of the foam test in relation to amniotic fluid surface tension.

    Main Methods:

    • Analysis of 51 amniotic fluid samples from normal pregnancies.
    • Measurement of amniotic fluid surface tension.

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  • Determination of amniotic fluid lecithin concentration.
  • Performance of the Clements et al. foam test.

    • Main Results:

    • A significant positive correlation was observed between amniotic fluid surface tension and gestational age (20-43 weeks).
    • A strong relationship was found between amniotic fluid lecithin concentration and surface tension.
    • Amniotic fluid surface tension showed a good correlation with the results of the foam test.

    Conclusions:

    • Amniotic fluid surface tension is a reliable indicator of gestational age in normal pregnancies.
    • Lecithin concentration is a key determinant of amniotic fluid surface tension.
    • The foam test serves as a practical and effective method for estimating amniotic fluid surface tension and, by extension, fetal lung maturity.