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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1988-9-15
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pubmed:abstractText |
Two healthy subjects performed single breath tests, the inspired gas containing 90% O2, 5% He and 5% SF6. The slope of the alveolar plateau was computed for N2, HE and SF6. The following experimental conditions were considered variable: (1) preinspiratory lung volume (PILV) with inspired volume (VT) equal to 1 L, (2) VT with PILV equal to functional residual capacity (FRC) with and without 10 sec of breath-hold (BH) time, (3) VT with PILV = FRC + 1 L, (4) flow with VT = 1 L and PILV = FRC with and without 10 sec end inspiration BH and (5) BH time with VT = 1 L and PILV = FRC. The slope dependence on the different variables was compared with simulations performed with two multibranch point models of the human acinus with different asymmetries. The model simulations give a coherent picture of all the experimental observations. The present work gives support to previous analyses which suggest that inter-dependence of transport by convection and diffusion in the periphery of the lung is a major component of the slope of the alveolar plateau.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:month |
Jun
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pubmed:issn |
0034-5687
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
72
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
257-70
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pubmed:dateRevised |
2009-11-11
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pubmed:meshHeading |
pubmed-meshheading:3406549-Adult,
pubmed-meshheading:3406549-Breath Tests,
pubmed-meshheading:3406549-Diffusion,
pubmed-meshheading:3406549-Female,
pubmed-meshheading:3406549-Humans,
pubmed-meshheading:3406549-Lung Volume Measurements,
pubmed-meshheading:3406549-Male,
pubmed-meshheading:3406549-Models, Biological,
pubmed-meshheading:3406549-Pulmonary Alveoli,
pubmed-meshheading:3406549-Pulmonary Gas Exchange,
pubmed-meshheading:3406549-Respiration
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pubmed:year |
1988
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pubmed:articleTitle |
Diffusion-dependent contribution to the slope of the alveolar plateau.
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pubmed:affiliation |
Institute of Interdisciplinary Research, Erasme Hospital, Free University of Brussels, Belgium.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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