Detection of respiratory mechanical dysfunction by forced random noise impedance parameters.


Journal Article

Respiratory mechanical parameters were computed from forced random noise impedance data in normal adults (group 1), asymptomatic smokers (group 2), and patients with obstructive pulmonary disease (group 3). Mean values for all derived parameters were significantly different (p less than 0.025) for group 3. Mean values of resonant frequency, the ratio of low-frequency (5 to 9 Hz) resistance to high-frequency resistance (15 to 19 Hz), and conductance normalized by height, were significantly different (p less than 0.05) between groups 1 and 2. This approach appears to yield respiratory mechanical parameters that are sensitive to mechanical alterations induced by early pulmonary disease. The rapid, noninvasive, and effort-independent nature of this approach make it especially useful for epidemiologic studies and for studies of "noncooperative" subjects.

Full Text

Cited Authors

  • Hayes, DA; Pimmel, RL; Fullton, JM; Bromberg, PA

Published Date

  • November 1, 1979

Published In

Volume / Issue

  • 120 / 5

Start / End Page

  • 1095 - 1100

PubMed ID

  • 507525

Pubmed Central ID

  • 507525

International Standard Serial Number (ISSN)

  • 0003-0805

Digital Object Identifier (DOI)

  • 10.1164/arrd.1979.120.5.1095


  • eng