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Perinatal Physiology pp 565–587Cite as

Electrolyte and Water Metabolism

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Abstract

According to measurements during the last trimester of pregnancy, fluid retention is associated with a mean increase of 756 meq exchangeable sodium and of 171 meq potassium.(70) In this chapter, we are concerned with the fraction of retained water and electrolytes that accumulates during fetal development in the uterine cavity. The intrauterine water content in the primate may be divided into three compartments: fetal, placental, and amniotic fluid. Estimates of the water, sodium, and potassium content of these compartments are shown in Table I. If the data in Table I are compared with the total amount of electrolytes retained during pregnancy, it is obvious that the increase of sodium is divided equally between the intrauterine fluid pools and the expanding maternal extracellular fluid space, while most of the retained potassium is used for the formation of fetal tissues.

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  1. Department of Pediatrics No. II, University Medical School, Budapest IX, Hungary

    Edmund Kerpel-Fronius

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  1. Mailman Center for Child Development, University of Miami Medical School, USA

    Uwe Stave

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Kerpel-Fronius, E. (1978). Electrolyte and Water Metabolism. In: Stave, U. (eds) Perinatal Physiology. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-2316-7_26

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  • DOI: https://doi.org/10.1007/978-1-4684-2316-7_26

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