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Utility of impulse oscillometry in young children with asthma

Tae Won Song1, Kyung Won Kim, Eun Soo Kim

  • 1Division of Allergy and Respiratory Medicine, Department of Pediatrics, Ilsan Paik Hospital, Inje University College of Medicine, Goyang-si, Korea.

Pediatric Allergy and Immunology : Official Publication of the European Society of Pediatric Allergy and Immunology
|March 12, 2008
PubMed

Insights

Impulse Oscillometry (IOS) effectively measures lung function in young asthmatic children, outperforming spirometry. IOS provides objective outcomes for early asthma diagnosis and intervention monitoring.

Area of Science:

  • Pediatric Pulmonology
  • Respiratory Medicine
  • Allergy and Immunology

Background:

  • Impulse Oscillometry (IOS) is a non-invasive lung function test suitable for young children.
  • Asthma diagnosis in preschool-aged children presents challenges with conventional spirometry.
  • Early detection and monitoring are crucial for managing pediatric asthma.

Purpose of the Study:

  • To evaluate the utility of Impulse Oscillometry (IOS) compared to spirometry for assessing lung function in asthmatic Korean children aged 3-6 years.
  • To determine if IOS can differentiate asthmatic children from healthy controls.
  • To assess the role of IOS in evaluating bronchodilator response in pediatric asthma.

Main Methods:

  • A comparative study involving 77 asthmatic children and 55 control subjects aged 3-6 years.
  • Lung function was assessed using both Impulse Oscillometry (IOS) and spirometry before and after bronchodilator administration.
  • Serum IgE, eosinophil counts, and specific IgE levels were measured.

Main Results:

  • Asthmatic children showed significant differences in baseline resistance and IOS-assessed bronchodilator response compared to controls.
  • Conventional spirometry did not yield statistically significant findings between groups.
  • IOS demonstrated significant differences in bronchodilator response in both atopic and non-atopic asthmatic children.

Conclusions:

  • Impulse Oscillometry (IOS) is a valuable tool for diagnosing early-stage asthma in young children.
  • IOS serves as a helpful objective measure for evaluating the effectiveness of early interventions in pediatric asthma.
  • IOS offers a more sensitive assessment of lung function in this age group compared to spirometry.

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