Figure 3From: B-type natriuretic peptide and mortality in extremely low birth weight infants with pulmonary hypertension: a retrospective cohort analysis Kaplan-Meier cumulative survival curves showing cumulative rates of survival for 36 preterm infants with BPD-associated PH stratified by the identified BNP cut-off value. Infants with BNP ≥ 220 pg/ml differed significantly from infants with BNP < 220 pg/ml.Back to article page