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Related Experiment Videos

Red cell mass during and after normal pregnancy.

D J Taylor, T Lind

    British Journal of Obstetrics and Gynaecology
    |May 1, 1979
    PubMed
    Summary

    Pregnancy initially reduces red cell mass but increases it later, especially with iron and folic acid supplements. These supplements significantly boost red cell production during gestation.

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    Area of Science:

    • Obstetrics and Gynecology
    • Hematology
    • Maternal-Fetal Medicine

    Background:

    • Red cell mass is crucial for oxygen transport during pregnancy.
    • Understanding changes in red cell mass is vital for maternal and fetal health.
    • Pregnancy-induced physiological changes impact hematological parameters.

    Purpose of the Study:

    • To investigate serial changes in red cell mass during pregnancy.
    • To determine the effect of iron and folic acid supplementation on red cell mass.
    • To compare postpartum red cell mass with values during gestation.

    Main Methods:

    • Serial calculation of red cell mass in 45 healthy pregnant women.
    • Measurements taken during pregnancy and postpartum (4-6 months).
    • Assessment of plasma volume and hematocrit to derive red cell mass.

    Main Results:

    • A reduction of ~100 ml in red cell mass was observed at 12 weeks gestation compared to postpartum.
    • Red cell mass increased to 180 ml above non-pregnant levels by 36 weeks gestation.
    • Iron and folic acid supplements increased this increment to 349 ml.

    Conclusions:

    • Red cell mass undergoes dynamic changes throughout pregnancy.
    • Iron and folic acid supplementation significantly enhances red cell mass expansion.
    • Supplementation is critical for meeting increased red cell demands during pregnancy.

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