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Pulmonary artery growth after arterial duct stenting in completely duct-dependent pulmonary circulation

Giuseppe Santoro1, Giovanbattista Capozzi1, Cristina Capogrosso1

  • 1Department of Paediatric Cardiology, A.O.R.N. 'Ospedali dei Colli', 2nd University of Naples, Naples, Italy.

Heart (British Cardiac Society)
|February 3, 2016
PubMed

Insights

Arterial duct (AD) stenting promotes significant pulmonary artery (PA) growth in infants with congenital heart disease (CHD) and completely duct-dependent pulmonary blood flow (CDD-PBF). This percutaneous approach offers a promising alternative to surgical palliation.

Area of Science:

  • Cardiovascular Medicine
  • Pediatric Cardiology
  • Interventional Cardiology

Background:

  • Pulmonary artery (PA) growth is crucial for managing congenital heart disease (CHD).
  • Arterial duct (AD) stenting has shown potential for promoting PA growth in certain CHD cases.
  • Data on AD stenting's effect on PA growth in completely duct-dependent pulmonary blood flow (CDD-PBF) is limited.

Purpose of the Study:

  • To evaluate the impact of percutaneous AD stenting on PA growth in neonates with CDD-PBF.
  • To compare PA growth outcomes in CDD-PBF patients versus those with multiple pulmonary blood flow sources.

Main Methods:

  • A cohort of 49 infants undergoing neonatal AD stenting was studied.
  • Pulmonary artery growth was assessed using Nakata index, McGoon ratio, and individual PA z-scores.
  • Patients were categorized based on their pulmonary blood flow source: CDD-PBF (n=15) or multiple sources (n=34).

Main Results:

  • AD stenting resulted in significant and balanced PA growth across the study population (Nakata index +122%, LPA z-score +84%, RPA z-score +92%).
  • No significant difference in PA growth was observed between CDD-PBF patients and those with multiple PBF sources.
  • Short-term follow-up (7.2 months) demonstrated sustained PA growth in both groups.

Conclusions:

  • Percutaneous AD stenting effectively promotes significant and balanced pulmonary artery growth in CHD with CDD-PBF.
  • This interventional strategy may serve as a viable alternative to traditional surgical palliation for this patient group.
Abstract

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