Heart failure with preserved ejection fraction in children: hormonal imbalance between aldosterone and brain

Satoshi Masutani1, Hirofumi Saiki, Clara Kurishima

  • 1Department of Pediatric Cardiology, Saitama Medical Center, Saitama Medical University.

Insights

Heart failure with preserved ejection fraction (HFpEF) occurs in children, often after congenital heart surgery. A higher aldosterone/BNP ratio may predict pediatric HFpEF, which has a lower mortality rate than systolic HF.

Area of Science:

  • Pediatric Cardiology
  • Cardiovascular Research
  • Clinical Medicine

Background:

  • Heart failure with preserved ejection fraction (HFpEF) is well-documented in adults, but information on its occurrence in children (EF >50%) is lacking.
  • Pediatric HFpEF is a significant clinical entity that warrants further investigation.

Purpose of the Study:

  • To investigate the characteristics of pediatric patients diagnosed with HFpEF.
  • To compare the hormonal profiles and outcomes of pediatric HFpEF with those of pediatric systolic heart failure (SHF).

Main Methods:

  • A retrospective review of 3,907 pediatric cardiovascular disease patients over a 10-year period.
  • Identification and analysis of 18 pediatric HFpEF cases.
  • Comparison of serum aldosterone and plasma brain natriuretic peptide (BNP) levels between HFpEF and SHF groups.

Main Results:

  • Pediatric HFpEF was identified in 0.5% of patients, predominantly young children (1.1±0.9 years) post-congenital heart surgery.
  • HFpEF patients exhibited concentric hypertrophy, diastolic dysfunction, elevated blood pressure, higher serum aldosterone, and lower plasma BNP compared to SHF patients.
  • A higher aldosterone/BNP ratio significantly predicted pediatric HFpEF (AUC=0.89), with a ratio ≥10.3 being optimal.
  • HF mortality was lower in pediatric HFpEF than SHF, with symptom improvement in 61% during follow-up.

Conclusions:

  • Heart failure with preserved ejection fraction (HFpEF) is present in the pediatric population.
  • Despite epidemiological differences, a shared pathophysiology may link childhood and adult HFpEF.
  • Further research is needed to explore the causal relationship between specific hormonal profiles and pediatric HFpEF.
Abstract

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