Characteristics of flow-standardized inspiratory lung sounds in healthy subjects

The precise median spectral characteristics of the main inspiratory lung sounds over the chest surface at an air flow rate of 0.89 ± 0.18 L/s have been determined in 36 healthy men aged 19 to 80 years. The spectral characteristics exhibited a high degree of bilateral symmetry. The cutoff frequencies...

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Bibliographic Details
Published in:Human physiology 2014, Vol.40 (4), p.440-449
Main Authors: Malinina, E. V., Kulakov, Y. V., Safronova, M. A., Tagilcev, A. A., Kostiv, A. E., Korenbaum, V. I.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Biomedicine
Human Physiology
Life Sciences
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Summary:The precise median spectral characteristics of the main inspiratory lung sounds over the chest surface at an air flow rate of 0.89 ± 0.18 L/s have been determined in 36 healthy men aged 19 to 80 years. The spectral characteristics exhibited a high degree of bilateral symmetry. The cutoff frequencies were found to increase significantly when moving from the interscapular region to both the apical and the basal areas of the lungs. The study also determined the 90% confidence intervals for interindividual variation in cutoff frequencies of the lung sound spectra in lung areas examined by means of auscultation.
ISSN:0362-1197
1608-3164
DOI:10.1134/S0362119714040112