Journal of Applied Physiology http://www.adinstruments.com/labchart/faseb
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 78: 938-947, 1995;
8750-7587/95 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Rotger, M.
Right arrow Articles by Navajas, D.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Rotger, M.
Right arrow Articles by Navajas, D.

Journal of Applied Physiology, Vol 78, Issue 3 938-947, Copyright © 1995 by American Physiological Society

ARTICLES

T model partition of lung and respiratory system impedances

M. Rotger, R. Farre, R. Peslin and D. Navajas
Laboratori Biofisica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona, Spain.

The aim of this work was to demonstrate that the three compartments of the lung T network and the chest wall impedance (Zcw) can be identified from input and transfer impedances of the respiratory system if the pleural pressure is recorded during the measurements. The method was tested in six healthy volunteers in the range of 8-32 Hz. The impedances resulting from the decomposition confirm the adequacy of the monoalveolar structure commonly used in healthy subjects. Indeed, the T shunt impedance is well modeled by a purely compliant element, the mean compliance [0.038 +/- 0.081 (SD) l/kPa], which coincides within 9.5 +/- 6.3% of the alveolar gas compressibility derived from thoracic gas volume (0.036 +/- 0.011 l/kPa). The results obtained provide experimental evidence that the alveolar gas compression is predominantly isothermal and that lung tissue impedance is negligible throughout the whole frequency range. The shape of Zcw is consistent with a low compliance-low inertance pathway in parallel with a high compliance-high inertance pathway. We conclude that the proposed method is able to reliably identify the T network featuring the lung and Zcw.


This article has been cited by other articles:


Home page
 J. Appl. Physiol.Home page
R. Peslin and C. Duvivier
Evaluation of a forced oscillation method to measure thoracic gas volume
J Appl Physiol, March 1, 1998; 84(3): 862 - 867.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
R. Peslin and C. Duvivier
Partitioning of airway and respiratory tissue mechanical impedances by body plethysmography
J Appl Physiol, February 1, 1998; 84(2): 553 - 561.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
W. Tomalak, R. Peslin, and C. Duvivier
Respiratory tissue properties derived from flow transfer function in healthy humans
J Appl Physiol, April 1, 1997; 82(4): 1098 - 1106.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online