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Related Experiment Videos

Body composition of the reference fetus.

E E Ziegler, A M O'Donnell, S E Nelson

    Growth
    |December 1, 1976
    PubMed
    Summary

    This study details the body composition of a reference human fetus from 24 to 40 weeks gestation, tracking changes in water, lipid, protein, and minerals. It provides insights into fetal growth and development by calculating component gains during this period.

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    Area of Science:

    • Perinatology
    • Human Physiology
    • Biochemistry

    Background:

    • Accurate fetal body composition data is crucial for understanding growth and development.
    • Existing data may lack comprehensive chemical analysis across a wide gestational range.

    Purpose of the Study:

    • To establish a reference model for human fetal body composition from 24 to 40 weeks gestation.
    • To quantify changes in major body components (water, lipid, protein, minerals) during late fetal development.

    Main Methods:

    • Utilized published chemical analysis data of human fetuses.
    • Constructed a reference fetus model based on representative body composition.
    • Calculated body composition and daily increments for gestational ages 24-40 weeks.

    Main Results:

    • Presented detailed body composition (water, lipid, protein, major minerals) for reference fetuses.
    • Observed decreasing concentrations of water, sodium, and chloride per unit body weight with advancing gestational age.
    • Documented increasing concentrations of protein, lipid, calcium, phosphorus, magnesium, and potassium with advancing gestational age.

    Conclusions:

    • Established a comprehensive reference for human fetal body composition during the third trimester.
    • Quantified dynamic changes in key elemental and molecular components during fetal growth.
    • Provided a basis for further research into fetal nutritional requirements and growth trajectories.

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