Journal of Applied Physiology Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 80: 1649-1659, 1996;
8750-7587/96 $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 Hsu, S. H.
Right arrow Articles by Jamieson, A. M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Hsu, S. H.
Right arrow Articles by Jamieson, A. M.

Journal of Applied Physiology, Vol 80, Issue 5 1649-1659, Copyright © 1996 by American Physiological Society

ARTICLES

Role of viscoelasticity in the tube model of airway reopening. II. Non-Newtonian gels and airway simulation

S. H. Hsu, K. P. Strohl, M. A. Haxhiu and A. M. Jamieson
Department of Biomedical Engineering, Chung Yuan Christian University, Taiwan, Republic of China.

The influence of viscoelastic gels as lining fluids on the pressure-velocity relationships in an airway tube model (Gaver et al. J. Appl. Physiol. 69: 74-85, 1990) was examined. A flow instability was observed due to the occurrence of a sol-gel transition in the viscoelastic properties under flow conditions. We further report measurements of the viscoelastic properties of airway secretions. Airway secretions are gels under small strains and have a yield stress of 4-7 dyn/cm2. Secretions from the pharyngeal airway show lower elasticity than secretions from the trachea. The airway reopening process is simulated using a Weibel lung geometry by incorporating the constitutive equations from the model gel studies and utilizing the rheological data on airway secretions. In these simulations, a "popping-open" phenomenon arises from a flow instability in airway generations 8-14 when the rheological properties of the lining fluids are assumed to be similar to those of pharyngeal secretions. On the basis of these studies, the elasticity of airway secretions plays an important role in airway reopening.


This article has been cited by other articles:


Home page
 J. Appl. Physiol.Home page
A. M. Bilek, K. C. Dee, and D. P. Gaver III
Mechanisms of surface-tension-induced epithelial cell damage in a model of pulmonary airway reopening
J Appl Physiol, February 1, 2003; 94(2): 770 - 783.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
B. Suki, A. M. Alencar, J. Tolnai, T. Asztalos, F. Petak, M. K. Sujeer, K. Patel, J. Patel, H. E. Stanley, and Z. Hantos
Size distribution of recruited alveolar volumes in airway reopening
J Appl Physiol, November 1, 2000; 89(5): 2030 - 2040.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
S. N. Ghadiali and D. P. Gaver III
An investigation of pulmonary surfactant physicochemical behavior under airway reopening conditions
J Appl Physiol, February 1, 2000; 88(2): 493 - 506.
[Abstract] [Full Text] [PDF]


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