Pediatric Cardiology

, Volume 35, Issue 5, pp 879–887

Factors Associated with Serum B-Type Natriuretic Peptide in Infants with Single Ventricles

  • Ryan J. Butts
  • Victor Zak
  • Daphne Hsu
  • James Cnota
  • Steven D. Colan
  • David Hehir
  • Paul Kantor
  • Jami C. Levine
  • Renee Margossian
  • Marc Richmond
  • Anita Szwast
  • Derek Williams
  • Richard Williams
  • Andrew M. Atz
Original Article

DOI: 10.1007/s00246-014-0872-z

Cite this article as:
Butts, R.J., Zak, V., Hsu, D. et al. Pediatr Cardiol (2014) 35: 879. doi:10.1007/s00246-014-0872-z

Abstract

Data regarding the value of B-type natriuretic peptide (BNP) measurements in infants with a single-ventricle (SV) physiology are lacking. This analysis aimed to describe the BNP level changes in infants with an SV physiology before and after superior cavopulmonary connection (SCPC) surgery. Levels of BNP were measured by a core laboratory before SCPC (at 5.0 ± 1.6 months) and at the age of 14 months during a multicenter trial of angiotensin-converting enzyme inhibition therapy for infants with SV. Multivariable longitudinal analysis was used to model the associations between BNP levels and three sets of grouped variables (echocardiography, catheterization, growth). Multivariable analysis was performed to assess associations with patient characteristics at both visits. Associations between BNP levels and neurodevelopmental variables were investigated at the 14 month visit because neurodevelopmental assessment was performed only at this visit. The BNP level was significantly higher before SCPC (n = 173) than at the age of 14 months (n = 134). The respective median levels were 80.8 pg/ml (interquartile range [IQR], 35–187 pg/ml) and 34.5 pg/ml (IQR, 17–67 pg/ml) (p < 0.01). A BNP level higher than 100 pg/ml was present in 72 subjects (42 %) before SCPC and in 21 subjects (16 %) at the age of 14 months. In the 117 patients who had BNP measurements at both visits, the median BNP level decreased 32 pg/ml (IQR, 1–79 pg/ml) (p < 0.01). In the longitudinal multivariable analysis, higher BNP levels were associated with a higher end-systolic volume z-score (p = 0.01), a greater degree of atrioventricular (AV) valve regurgitation (p < 0.01), a lower weight z-score (p < 0.01), and a lower length z-score (p = 0.02). In multivariable analyses, a higher BNP level at the age of 14 months was associated with arrhythmia after SCPC surgery (p < 0.01), a prior Norwood procedure (p < 0.01), a longer hospital stay after SCPC surgery (p = 0.04), and a lower Bayley psychomotor developmental index (p = 0.02). The levels of BNP decreases in infants with SV from the pre-SCPC visit to the age of 14 months. A higher BNP level is associated with increased ventricular dilation in systole, increased AV valve regurgitation, impaired growth, and poorer neurodevelopmental outcomes. Therefore, BNP level may be a useful seromarker for identifying infants with SV at risk for worse outcomes.

Keywords

B-type natriuretic peptideBNPSingle-ventricle physiologySuperior cavopulmonary connection surgeryAngiotensin-converting enzyme inhibition therapySCPCVentricular dilation

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Ryan J. Butts
    • 1
  • Victor Zak
    • 2
  • Daphne Hsu
    • 3
  • James Cnota
    • 4
  • Steven D. Colan
    • 5
  • David Hehir
    • 6
  • Paul Kantor
    • 7
  • Jami C. Levine
    • 5
  • Renee Margossian
    • 5
  • Marc Richmond
    • 8
  • Anita Szwast
    • 9
  • Derek Williams
    • 10
  • Richard Williams
    • 11
  • Andrew M. Atz
    • 1
  1. 1.Department of PediatricsMedical University of South CarolinaCharlestonUSA
  2. 2.New England Research InstitutesWatertownUSA
  3. 3.Division of CardiologyChildren’s Hospital at MontefioreBronxUSA
  4. 4.Department of CardiologyCincinnati Children’s HospitalCincinnatiUSA
  5. 5.Department of CardiologyBoston Children’s HospitalBostonUSA
  6. 6.Department of PediatricsMedical College of WisconsinMilwaukeeUSA
  7. 7.Department of CardiologyHospital for Sick ChildrenTorontoCanada
  8. 8.Department of CardiologyChildren’s Hospital of New YorkNew YorkUSA
  9. 9.Department of CardiologyChildren’s Hospital of PhiladelphiaPhiladelphiaUSA
  10. 10.Department of CardiologyBrenner Children’s HospitalWinston-SalemUSA
  11. 11.Department of PediatricsUniversity of UtahSalt Lake CityUSA