Affiliation:
1. Department of Physiology, Harvard School of Public Health, Boston, Massachusetts
Abstract
Lung volumes during pressure breathing (PB) were measured in six subjects by two methods: 1) The subject was seated completely enclosed in a body plethysmograph breathing room air through a tube; pressures were applied to this tube and volume changes were recorded from the plethysmograph. 2) The subject was seated enclosed in a body box except for his head which protruded through a respirator collar; pressures were applied around the body and lung volume changes were recorded from a bag-box system. In addition, relaxation pressure (RP) measurements were obtained. Volume-pressure relationships by PB 1 closely approximated those by RP, whereas PB 2 tended to yield smaller volume changes for a given pressure than the other methods. The extrathoracic airways are subjected to the applied pressure in PB 1 and RP, but not in PB 2. The different results may relate to this difference. Submitted on June 14, 1962
Publisher
American Physiological Society
Subject
Physiology (medical),Physiology
Cited by
29 articles.
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