Linked Life Data

511685

Source:http://linkedlifedata.com/resource/pubmed/id/511685

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1980-2-15
pubmed:abstractText
Elastic loads of 9 cmH2O/1 were suddenly applied to the external airways of four normal human subjects during hypercapnic hyperpnea of 20-32 1/min using a closed-circuit breathing apparatus that permitted alveolar carbon dioxide pressure (PACO2) to be held nearly constant in spite of loading induced changes in ventilation. Transient depression of minute ventilation (V) and mean inspiratory flow (VT/TI) was observed immediately on loading; both these variables increased progressively to steady levels less than control without significant changes in alveolar chemistry. Two subjects increased VT (volume compensators) whereas the other two chose to increase f (frequency compensators). The net result in V and VT/TI compensation was not different between these groups. Load removal always resulted in an overshooting response of V lasting for several breaths and due entirely to an overshoot in VT because f transiently fell to or below control at once. Elastic loading always resulted in a steeper plot of V-VT in the steady state; in three of the subjects, the transition to this steeper line was immediate. The steady-state responses were qualitatively though not quantitatively consistent with pattern adaptation appropriate to minimize the work-rate of breathing.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0161-7567
pubmed:author
pubmed:issnType
Print
pubmed:volume
47
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
778-86
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1979
pubmed:articleTitle
Ventilatory responses to elastic loading at constant PACO2 hypercapnic hyperpnea.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.