Abstract
Children with congenital heart disease need adequate diagnostic classification regarding their cardiovascular status (CVS). N-terminal brain natriuretic peptide (N-BNP) plasma concentration indicates dysfunction of the cardiovascular system and guides decisions concerning treatment and prognosis. Reference values are established for adults, with age-dependent increasing values and higher values in women. To avoid misclassification concerning the CVS, a large group of healthy children and adolescents can be used show the relationship between gender, age, and N-BNP and these can serve as reference values. N-BNP was measured in 434 healthy subjects (240 female and 194 male) with ages ranging from 0 to 32 years without any cardiovascular disease or renal or hepatic impairment. Measurements were performed with an electrochemiluminescence immunoassay from Roche Diagnostics. Mean N-BNP decreased from 12.6 fmol/ml (0–9 years; n = 79) to 9.41 fmol/ml (10–14 years; n = 154) and in adolescents from 6.1 (15–19 years; n = 99) to 4.8 fmol/ml (>19 years; n = 102) in adults (p < 0.05). Mean N-BNP concerning gender did not differ in any age group younger than 19 years. In contrast, the adult female group had 78% higher N-BNP compared to the male group (p < 0.05). There was a significant peak in N-BNP at the age of 12–14 years. This study shows that reference values for N-BNP differed profoundly in children compared to adults and were up to 260% higher in children without any gender difference. Therefore, these reference values will help to avoid CVS misclassification in children for the biomarker N-BNP.
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Acknowledgments
We are grateful to all the doctors and nurses of the Pediatric University Clinic at the University-Hospital in Hamburg for excellent support of this study. SA is supported by the Kompetenznetzwerk fuer Angeborene Herzfehler, funded by the Bundesministerium fuer Bildung und Forschung (BMBF) of the German Government. SL is a recipient of the Heisenberg Programme of the Deutsche Forschungsgemeinschaft (DFG) in Germany. The ECLIA kits for N-BNP measurements were donated to SL from Roche Diagnostic. Roche gave no financial support and had no input into the study design or the data analysis.
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Mir, T., Flato, M., Falkenberg, J. et al. Plasma Concentrations of N-Terminal Brain Natriuretic Peptide in Healthy Children, Adolescents, and Young Adults: Effect of Age and Gender. Pediatr Cardiol 27, 73–77 (2006). https://doi.org/10.1007/s00246-005-1022-4
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DOI: https://doi.org/10.1007/s00246-005-1022-4