Effect of parenchymal shear modulus and lung volume on bronchial pressure-diameter behavior
- 1 June 1978
- journal article
- research article
- Published by American Physiological Society in Journal of Applied Physiology
- Vol. 44 (6) , 859-868
- https://doi.org/10.1152/jappl.1978.44.6.859
Abstract
A method that interrelates lung pressure-volume behavior, bronchial pressure-diameter behavior, and parenchymal shear modulus is presented. The method was used to predict changes in intraparenchymal bronchial diameter that occurred when lobe pressure-volume behavior and parenchymal shear modulus were markedly changed by inducing air trapping in isolated dog lobes. Predictions agreed with measurements, thereby supporting the general method. Measured values for the shear modulus were approximately 0.7 times the transpulmonary pressure for the control state. Estimated values for the peribronchial pressure difference from pleural pressure during a deflation pressure-volume maneuver for transpulmonary pressures below 12 cmH2O were small, approximately +/- 1 cmH2O, its sign being positive or negative, depending on whether the bronchus was dilated or contricted.This publication has 7 references indexed in Scilit:
- Elastic constants of trapped lung parenchymaJournal of Applied Physiology, 1978
- Behavior of artificially produced holes in lung parenchymaJournal of Applied Physiology, 1977
- Axial forces in the bronchial treeJournal of Applied Physiology, 1977
- Effect of vagal tone on airway diameters and on lung volume in anesthetized dogsJournal of Applied Physiology, 1976
- Elastic constants of inflated lobes of dog lungsJournal of Applied Physiology, 1976
- Influence of lung parenchyma on pressure-diameter behavior of dog bronchi.Journal of Applied Physiology, 1966
- Mechanical Stability of the LungArchives of environmental health, 1963