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Plasma B-type natriuretic peptide levels in children with heart disease
Walter Knirsch1, Eliane Häusermann, Margrit Fasnacht
1Division of Pediatric Cardiology, University Children's Hospital Zurich, Zurich, Switzerland. walter.knirsch@kispi.uzh.ch
Insights
Plasma B-type natriuretic peptide (BNP) levels are elevated in children with heart disease. BNP monitoring is useful for assessing treatment effectiveness in pediatric cardiology patients.
Area of Science:
- Pediatric Cardiology
- Biomarkers
- Cardiovascular Research
Background:
- Heart diseases in children, including congenital heart disease (CHD), cardiomyopathies (CMP), and pulmonary arterial hypertension (PAH), present significant clinical challenges.
- Accurate monitoring of disease severity and treatment response is crucial for optimizing outcomes in pediatric cardiac patients.
Purpose of the Study:
- To determine plasma B-type natriuretic peptide (BNP) levels in children with various heart conditions.
- To evaluate the utility of plasma BNP as a monitoring tool for therapeutic efficacy before and during treatment in pediatric heart disease.
Main Methods:
- An observational prospective clinical trial was conducted involving 522 pediatric patients (14 days to 18 years).
- Plasma BNP levels were measured in children diagnosed with CHD, CMP, or PAH before and during medical or surgical treatment.
Main Results:
- Elevated plasma BNP levels were observed in most pediatric heart disease types prior to treatment.
- Cardiomyopathies showed the highest pre-treatment BNP levels, particularly dilated CMP.
- Significant reductions in BNP levels were noted in children with PAH under medical treatment and in those with univentricular CHD post-surgical palliation.
Conclusions:
- Plasma BNP levels are significantly elevated in children with heart disease before intervention.
- BNP serves as a valuable laboratory parameter for monitoring treatment response and guiding long-term follow-up in pediatric cardiovascular conditions.
Aim:
To determine plasma B-type natriuretic peptide (BNP) levels in children with heart diseases before medical or surgical treatment for monitoring therapeutic efficacy in an observational prospective clinical trial at tertiary care centre.
Methods:
In 522 paediatric patients at an age of 6.4 ± 5.2 years (mean ± SD; range: 14 days-18 years) with congenital heart disease (CHD), cardiomyopathies (CMP) or pulmonary arterial hypertension (PAH), plasma BNP levels were evaluated before and under treatment.
Results:
Most types of heart disease are associated with increased mean plasma BNP levels before treatment, with highest values in children with CMP (BNP 6165 pg/mL in dilated CMP vs. 817 pg/mL in hypertrophic, vs. 1236 pg/mL in restrictive CMP, each p < 0.05). Children with PAH showed a significant decrease in BNP levels under medical treatment (mean BNP 981 pg/mL before vs. 26 pg/mL under treatment, p < 0.05). Children with univentricular CHD undergoing surgical staged palliation showed a significant decrease in BNP levels after bidirectional cavopulmonary anastomosis (BDCP) (BNP 109 pg/mL before vs. 70 pg/mL after BDCP, p < 0.05).
Conclusion:
Plasma BNP levels are elevated in children with heart disease before treatment and are a useful laboratory parameter under treatment during long-term follow-up.
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