Chapter

Blood disorders specific to pregnancy

David J. Perry and Katharine Lowndes

in Oxford Textbook of Medicine

Published on behalf of Oxford University Press

Published in print May 2010 | ISBN: 9780199204854
Published online May 2010 | e-ISBN: 9780199570973 | DOI: http://dx.doi.org/10.1093/med/9780199204854.003.1416

Series: Oxford Textbooks

Blood disorders specific to pregnancy

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Plasma volume increases by more during pregnancy than does red cell mass, leading to haemodilution and a fall in the haematocrit from about 40% to 33%, with the nadir usually reached at 24 to 32 weeks gestation. Anaemia during pregnancy is defined as a haemoglobin concentration of <10.5 g/dl during the second and third trimesters....

Chapter.  6092 words.  Illustrated.

Subjects: Obstetrics

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