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Updated: Jul 9, 2026

Employing the Forced Oscillation Technique for the Assessment of Respiratory Mechanics in Adults
Published on: February 9, 2022
Impulse oscillometry in the assessment of children's lung function.
P P de Oliveira Jorge1, J H P de Lima2, D C Chong E Silva3
1Federal University of São Carlos (UFSCar), Brazil; Federal University of São Paulo (UNIFESP), Brazil.
Impulse oscillometry (IOS) is a useful tool for assessing pediatric lung function, particularly in asthma. While easy to perform, interpreting IOS results in children requires careful consideration.
Area of Science:
- Pediatric Pulmonology
- Respiratory Physiology
Background:
- Lung function assessment in children with respiratory diseases is crucial for diagnosis and management.
- Spirometry is a standard but can be challenging in young children.
- Impulse oscillometry offers an alternative, non-invasive method for evaluating airway mechanics.
Purpose of the Study:
- To review the literature on the use of impulse oscillometry for assessing lung function in pediatric respiratory diseases.
- To specifically evaluate its application in children with asthma.
Main Methods:
- Systematic literature search of Medline, PubMed, and Lilacs databases.
- Keywords included forced oscillation, impulse oscillometry, and asthma.
- Focused on studies assessing lung function in children.
Main Results:
- Impulse oscillometry (IOS) measures airway resistance and reactance, correlating well with spirometry.
- IOS is sensitive for assessing bronchodilator response and therapeutic effects in pediatric asthma.
- It aids in evaluating disease control but interpretation can be challenging in certain cases, like children with attention deficit.
Conclusions:
- Impulse oscillometry is a valuable tool for pediatric lung function measurement.
- The test is relatively easy to perform in children.
- Clinical interpretation of IOS results requires expertise and consideration of limitations.
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