The circulating red cell volume and body hematocrit in normal pregnancy and the puerperium

Persistence and Utilization of Maternal Iron for Blood Formation During Infancy 12

“…The hemoglobin concentration of 14.6 gm. per cent in cord blood was low, without apparent reason from the obstetrical history or studies made during this mother's pregnancy (3). The similarity of hemoglobin concentrations in samples taken at 2 and 6 days after birth substantiates the measurement from cord blood.…”

“…In the original studies (2,3), radioactive iron (Fe) prepared in the Massachusetts Institute of Technology cyclotron was administered as donor red cells to 11 women on four to seven occasions during pregnancy. From these 11 pregnancies and from five subsequent ones of four of the women, a total of 16 infants were available for study.…”

“…The slow rise in hemoglobin concentration which occurs during the remainder of infancy may be affected by several factors, including the rapidity of body growth, the amount and absorption of dietary iron, and the amount and conservation of iron which was obtained transplacentally (1). An opportunity to measure the persistence and utilization of transplacental iron during infancy arose as a by-product of investigations of maternal red cell volume and hematocrit recently published from this hospital (2,3).…”

RED CELL, PLASMA AND BLOOD VOLUME IN HEALTHY MEN MEASURED BY RADIOCHROMIUM (Cr51) CELL TAGGING AND HEMATOCRIT: INFLUENCE OF AGE, SOMATOTYPE AND HABITS OF PHYSICAL ACTIVITY ON THE VARIANCE AFTER REGRESSION OF VOLUMES TO HEIGHT AND WEIGHT COMBINED*

“…Correction factors which apply to data on healthy subjects do not necessarily apply to subjects with disease. Plasma trapping varies with the hematocrit level (35) and the body: venous hematocrit ratio is altered in some circulatory disorders (11,35), with splenomegaly (36) and in pregnancy (37). Other investigators may conveniently compare their data with ours before they apply any desired correction factors.…”

Clinical Problems: Quantitation of Transplacental Haemorrhage

“…Antisocial Behaviour PHILIP BARKER British Medical Journal,197 ,3,[34][35][36] To understand antisocial behaviour in children it is helpful to consider how normal, socially acceptable behaviour develops. Such behaviour is largely a product of the child's family life and relationships.…”