Patent ductus arteriosus, systemic NT-proBNP concentrations and development of bronchopulmonary dysplasia in very preterm infants: retrospective data analysis from a randomized controlled trial

Table 3 Comparative serum NT-proBNP concentrations in the groups

Indicators	BPD/death (n = 25)	Without BPD (n = 27)	р
NT-proBNP level in the first 24–72 h of life, pg/ml	17,916 (8920-26,373)^a	7391 (3257-16,868)	*0.008*
NT-proBNP level for 8–9 days of life, pg/ml	3988.5 (1839-8017)^b	1717 (1284-2409)^b	*0.002*

^a median (interquartile range); ^b the dynamics of the indicator is statistically significant (p < 0.01)

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