Changes in the highest frequency of breath sounds without wheezing during methacholine inhalation challenge in children (pages 485–490)
Chizu HABUKAWA, Katsumi MURAKAMI, Hiroyuki MOCHIZUKI, Satoru TAKAMI, Reiko MURAMATSU, Hiromi TADAKI, Satomi HAGIWARA, Takahisa MIZUNO, Hirokazu ARAKAWA and Yukio NAGASAKA
Version of Record online: 24 FEB 2010 | DOI: 10.1111/j.1440-1843.2010.01706.x
A breath sound analyser was used to detect bronchoconstriction without wheezing during methacholine inhalation challenge in children. The highest frequency of inspiratory breath sounds increased significantly during bronchoconstriction and decreased after inhalation of a bronchodilator. The highest frequency of inspiratory breaths sounds was correlated with bronchial reactivity.