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




Table 3.02 - Mean Circulating Maternal Plasma, Red Cell and Total Blood Volumes during Pregnancy.

Week of gestationPlasmaRed cellsBlood
mlml/kgmlml/kgmlml/kg
Nonpregnant280050155027435077
6290052150026 - 27440079
12310054157527467581
16340057162527502584
20380063165027545090
24440068177527617595
28440066180027520093
32460067182527642594
36470070187527657597
40470072197527667599


Note: Thus, hematocrit declines from 1550/4350 x 100 = 35.6% in a non-pregnant woman, to 1975/6675 x 100 = 29.6% in a pregnant woman at term.


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