Linked Life Data

7280388

Source:http://linkedlifedata.com/resource/pubmed/id/7280388

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1981-11-22
pubmed:abstractText
We measured the cranio-caudal distribution (A/B) of slowly inspired gas (VI) and of perfusion (Q) at different lung volumes in 8 supine subjects. When supine closing capacity (CC) exceeded supine FRC, A/B of VI was greater than unity and decreased at higher lung volumes (VL). When CC less than FRC, A/B of VI less than or equal to 1.0 and showed no VL dependence. When abdominal girth/height ratio (Ag/Ht) exceeded 0.50, supine CC was greater than upright CC and A/B of VI was greater. In contrast, A/B of Q greater than 1.0 at all VL and was not related to (FRC--CC). The results suggest that cranio-caudal distribution of inspired gas is influenced by airway closure in the dependent paradiaphragmatic lung regions and that the latter is enhanced in the presence of abdominal obesity. Perfusion distribution is preferential to lung apices, relatively volume independent, and not influenced by airway closure.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0034-5687
pubmed:author
pubmed:issnType
Print
pubmed:volume
45
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
43-53
pubmed:dateRevised
2009-11-11
pubmed:meshHeading
pubmed:year
1981
pubmed:articleTitle
Cranio-caudal distribution of inspired gas and perfusion in supine man.
pubmed:publicationType
Journal Article