Page 4, Later Development, Develop. Physiol., Dr. D. Penney

Maternal Blood Volume Changes:

Maternal blood volume increases during gestation, from approximately 4.4 liters in the non-pregnant woman to 6.7 liters at term (Table 3.02). This comes about through large increases in plasma volume, and also relatively smaller increases in erythrocyte mass. As a result hematocrit progressively declines.

To review blood volume control

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