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Peripheral airway dysfunction in prematurity-associated obstructive lung disease identified by oscillometry.

Michael Cousins1,2, Kylie Hart1,2, Bence L Radics3

  • 1Department of Child Health, Cardiff University School of Medicine, Cardiff, UK.

Pediatric Pulmonology
|September 13, 2023
PubMed
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Preterm-born children with obstructive lung disease show significant lung function impairments. Oscillometry can help identify these children and guide treatment after bronchodilator administration.

Keywords:
airway obstructionalbuteroloscillometrypremature birthrespiratory mechanics

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Area of Science:

  • Pediatric Pulmonology
  • Respiratory Physiology
  • Neonatal Medicine

Background:

  • Lung dysfunction is a common complication in preterm-born children.
  • Mechanisms of prematurity-associated lung disease require further elucidation.
  • Understanding lung phenotypes is crucial for targeted interventions.

Purpose of the Study:

  • To investigate lung function using oscillometry in preterm-born children with and without lung dysfunction.
  • To compare lung function parameters between different phenotypes of prematurity-associated lung disease and controls.
  • To assess the impact of exercise and bronchodilator administration on lung function.

Main Methods:

  • Assessed 179 children aged 7-12 years: 15 with prematurity-associated obstructive lung disease (POLD), 11 with prematurity-associated preserved ratio of impaired spirometry (pPRISm), 93 preterm controls, and 60 term controls.
  • Utilized oscillometry to measure impedance, resistance, reactance, and compliance at baseline, post-exercise, and post-bronchodilator.
  • Classified preterm children based on spirometry criteria (FEV1/FVC ratio and lower limit of normal).

Main Results:

  • Children with POLD exhibited significantly impaired impedance, increased resistance, and reduced compliance compared to both control groups.
  • The pPRISm group showed impaired reactance and compliance compared to term controls.
  • Post-exercise bronchodilator administration led to the greatest improvements in the POLD group, notably decreased resistance and reactance.

Conclusions:

  • Preterm-born children with obstructive airway disease demonstrate the most significant oscillometry impairments.
  • Oscillometry is a valuable tool for identifying lung disease in preterm-born children.
  • Findings support the use of oscillometry for early detection and treatment initiation in affected children.