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The number of studies about B-type natriuretic peptide (BNP) and neonates is growing; nevertheless, the use of BNP needs to be further investigated in preterm newborns.1 2 We observed the pattern of plasma BNP concentrations from late fetal life, from umbilical cord blood (UBC) samples, through day 1 of life (preterm only), day 3, and until the first month of life in 32 preterm newborns and 32 full-term healthy newborns. The results are summarised below.
Median preterm newborns’ BNP concentrations: UBC, 31 pg/ml (interquartile range (IQR): 7.2–98.6); birth day, 84.4 pg/ml (IQR: 30.6–471.5); day 3, 35.7 pg/ml (IQR: 14.2–119.7); day 30, 12.7 pg/ml (IQR: 5–16.2). Median full-term newborns’ BNP concentrations: UCB, 10.6 …
Competing interests None.
Provenance and Peer review Not commissioned; externally peer reviewed.