title: Correlation between cord blood, perinatal BNP values and echocardiographic parameters in healthy Italian newborns.
abstract: We evaluated the correlation between brain natriuretic peptide (BNP) in umbilical cord blood after normal pregnancy, in blood samples of twenty-nine Italian healthy newborns and paired echocardiographic parameters. Plasma BNP was evaluated in UCB (T0) and in blood on day 3 (T1), 30 (T2) of life. Echocardiographic parameters were recorded at T1 and T2. Median of BNP concentrations in cord blood was 8.6 pg/ml. Median BNP concentrations on T1 was 59.2 pg/ml, on T2 was 8.7 pg/ml. Significantly higher BNP concentrations were reported on T1 than T0 and T2 (p<0.0001), while no significant difference resulted between T0 and T2. Plasma BNP at T2 was significantly correlated with mVTI (p=0.006), E wave (p=0.004), LA (p=0.047), LVPW (p=0.004), M (p=0.025). No correlation was found with SF% and E/A. Our results confirm that in healthy and term neonates the cord blood BNP concentrations are low. On T1 BNP values are high with wide ranges because of physiological adjustment to postnatal circulation. When echocardiographic parameters are in normal ranges, BNP concentrations return to low levels on day 30. In healthy newborns left ventricular filling, LA size and M seem to influence BNP levels rather than left ventricular systolic and diastolic function.
authors.affiliation: Pediatric Cardiology, Department of Paediatrics, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
authors.forename: Savina
authors.initials: S
authors.lastname: Mannarino
authors.forename: Laura
authors.initials: L
authors.lastname: Ciardelli
authors.forename: Francesca
authors.initials: F
authors.lastname: Garofoli
authors.forename: Gianfranco
authors.initials: G
authors.lastname: Perotti
authors.forename: Elisa
authors.initials: E
authors.lastname: Mongini
authors.forename: Simona
authors.initials: S
authors.lastname: Damiano
authors.forename: Carmine
authors.initials: C
authors.lastname: Tinelli
authors.forename: Rosa Maria
authors.initials: RM
authors.lastname: Cerbo
authors.forename: Giorgio
authors.initials: G
authors.lastname: Rondini
authors.forename: Mauro
authors.initials: M
authors.lastname: Stronati
mesh_terms: D004562:Electrocardiography; D005260:Female; D005312:Fetal Blood; D006801:Humans; D007231:Infant, Newborn; D007558:Italy; D008297:Male; D020097:Natriuretic Peptide, Brain / Q000097:blood*; D012016:Reference Values
chemical_list: D020097:Natriuretic Peptide, Brain