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Respiratory impedance in children with cystic fibrosis using forced oscillations in clinic

C L Gangell1, F Horak, H J Patterson

  • 1School of Paediatrics and Child Health, Princess Margaret Hospital for Children, Perth, WA, Australia.

The European Respiratory Journal
|August 11, 2007
PubMed

Insights

The forced oscillation technique is a feasible method for measuring lung function in young children with cystic fibrosis (CF). This technique can help detect early lung disease in children with CF.

Area of Science:

  • Pediatric Pulmonology
  • Respiratory Physiology
  • Cystic Fibrosis Research

Background:

  • Lung function measurement is crucial for cystic fibrosis (CF) management but challenging in young children.
  • Early detection of lung disease in pediatric CF is essential for timely intervention.

Purpose of the Study:

  • To evaluate the utility of the forced oscillation technique (FOT) for routine lung function assessment in preschool-aged children with CF.
  • To determine if FOT can differentiate between symptomatic and asymptomatic children with CF.

Main Methods:

  • Lung function was assessed in 56 children (aged 2-7 years) with CF using FOT, measuring respiratory system resistance (Rrs) and reactance (Xrs) at 6, 8, and 10 Hz.
  • Results were expressed as Z-scores, and children were classified as symptomatic or asymptomatic based on clinical evaluation.
  • Repeatability was assessed in 25 children.

Main Results:

  • FOT measurement was feasible in a routine pediatric CF clinic setting.
  • Children with CF showed significantly different Z-scores for Rrs and Xrs compared to healthy controls.
  • Symptomatic children exhibited significantly decreased Xrs and increased Rrs at 6 Hz compared to asymptomatic children.

Conclusions:

  • The forced oscillation technique is a viable method for assessing lung function in young children with cystic fibrosis in a clinical environment.
  • FOT has the potential to enhance understanding of early-stage lung disease in pediatric CF patients.
  • This technique may aid in earlier diagnosis and management of CF lung complications.

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