Linked Life Data

993162

Source:http://linkedlifedata.com/resource/pubmed/id/993162

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5 Pt. 1
pubmed:dateCreated
1977-1-25
pubmed:abstractText
We measured separate volume-pressure (V-P) relationships or rib cage and diaphragm-abdomen in seven human subjects during voluntary relaxation of the respiratory muscles, breathing at rest, during exercise, and rebreathing expired air. Estimates of separate volume displacements of the two parallel chest wall pathways were based on analysis of rib cage and abdominal anteroposterior diameter changes. The pressure developed across each pathway (transthoracic pressure) was partitioned into two serial pressure drops: transdiaphragmatic pressure and transabdominal pressure. We develop the concept that the relationship of volume displacements of structures to pressures developed by the structures during breathing, as compared to the relaxed state, reflects action of respiratory muscles in the structure. We interpret the relationship of rib cage volume displacements to transabdominal pressure (during breathing vs. relaxation) as indicating action of intercostal and accessory muscles only, the separate action of diaphragm on rib cage being measured by transdiaphragmatic pressure. At rest, the diaphragm is the only importantly active respiratory muscle. During increased ventilation activity of other respiratory muscles appears coordinated to assist the optimize diaphragmatic function.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0021-8987
pubmed:author
pubmed:issnType
Print
pubmed:volume
41
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
739-51
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1976
pubmed:articleTitle
Respiratory muscle action inferred from rib cage and abdominal V-P partitioning.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.