Abstract
Airway dysfunction can be appreciated by lung function testing, performing these tests can be difficult in infant. We studied whether breath sound may reflect subtle airway dysfunction in asymptomatic asthmatic children.
We performed sound spectrographic analysis of breath sounds in asymptomatic asthmatic children and found correlations between highest frequency of inspiratory breath sounds (HFI) and lung function in the absence of acute asthmatic symptoms. As a result, higher HFI in asymptomatic asthmatic children indicate small airway obstruction.
