Blood Volume of Newborn Infant in Relation to Early and Late Clamping of Umbilical Cord

Growth in Beagles: Changes in Body Weight, Plasma Volume, and Venous Hematocrit

“…Other investigators, however, found no change in plasma volume in 50% of a series of newborns studied in the first 24 hr [14], in 1-3 days [9], or a significant decrease within 2 hr after birth [22]. One of the complicating factors which might account for some of the differences between these data was the time elapsing between delivery and clamping of the cord [9,23].…”

“…Other investigators, however, found no change in plasma volume in 50% of a series of newborns studied in the first 24 hr [14], in 1-3 days [9], or a significant decrease within 2 hr after birth [22]. One of the complicating factors which might account for some of the differences between these data was the time elapsing between delivery and clamping of the cord [9,23]. For many species of animals, including the rat [2,5,10], rabbit [3,16], lamb [12], pig [17], and guinea pig [5], the plasma volume, when expressed in milliliters per kilogram body weight, decreased during growth.…”

Circulating Blood Volumes: A Review of Measurement Techniques and a Meta-Analysis in Children

“…Four of the studies presented mean and standard deviation of CBV, whereas 17 of the studies additionally published their patient-level data. 7,12,15,16,20,[22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37] The results of the comprehensive meta-analysis mean values of CBV with a 95% confidence interval for each age group are shown in Table 1. The values obtained from the meta-analysis were similar, but not equivalent, when compared with often used values in a standard pediatric reference text ( Table 2).…”

Late vs Early Clamping of the Umbilical Cord in Full-term Neonates

“…Three of the included trials were conducted by the same research group, but it was clear from the descriptions that they were based on different samples. 44,47,48 The remaining 22 studies were excluded because they included exclusively preterm infants (12 trials) [50][51][52][53][54][55][56][57][58][59][60][61] or low-birthweight infants (4 trials), 62-65 did not include a control group (2 studies), 7,66 included data previously published (1 trial), 67 did not report gestational age (2 trials), 68,69 or did not include any of the outcomes of interest (1 trial). 70 No studies including only cesarean births were found, and no additional data were obtained from contacts with authors.…”