NPPB and congenital diaphragmatic hernia: Several studies focused on the evaluation of brain natriuretic peptide (BNP) and N-terminal pro-BNP (NTproBNP) as cardiac biomarker in infants with CDH.3–7 However, studies concerning biomarkers with alternative pathophysiological pathways are needed, because of inconsistent data regarding natriuretic peptides in CDH and possible intra- and inter-individual fluctuations in the first days of life.4