Table 2.

Plasma BNP level of newborns with different birth conditions.

References	Gestational age (weeks)	Neonatal condition	n	Age	BNP (pg/mL)
					Median	Range
Mannarino et al. (14)	25–35	Preterm without PDA*	25	Day 3	25.5	10.9–49 (IQR)
				Day 28	15.6	10–22 (IQR)
Garofoli et al. (15)	31–35.6	IUGR**	43	Umbilical cord blood	23.9	9.3–68.3 (IQR)
				Day 1	40.6	20.2–105 (IQR)
				Day 3	14	4.9–44.1 (IQR)
				Day 30	11.45	4.9–18.1 (IQR)
Tauber et al. (19)*	24–31 6/7	Preterm without PDA	36	Day 1	96	89–213 (95% CI)
				Day 5	16.2	11–30 (95% CI)
				Day 10	10.7	8.9–19.5 (95% CI)
				Day 15	8.3	6.5–13.3(95% CI)
Torres et al. (20)	Mean: 36.3	Uncomplicated MDCA*** twin	50	Umbilical cord blood	13.14	9.17–19.84 (IQR)
	Mean: 39.5	Low-risk singleton	27		20.81	16.69–34.01 (IQR)

^*PDA, patent ductus arteriosus.

^**IUGR, intra uterine growth restriction.

^***MDCA, monochorionic diamniotic.