Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1991-5-28
pubmed:abstractText
The authors studied the question of the completeness of ventilation of an additional dead space in the form of a tube 3 cm in diameter and with a volume of 600 ml. Seven young volunteers were examined while breathing with and without the tube, seated at rest and during a two-grade exercise load on a bicycle ergometer. The criterion of ventilation of the tube was enlargement of the dead space by 600 ml during breathing through the tube. The functional dead space was always calculated from the tidal volume and the CO2 concentration in mixed expired air and in an end-tidal sample, using the Bohr equation. In every case, the tube was found to be completely ventilated by breathing, both under resting conditions and during exercise. In breathing during the bicycle exercise, the ratio of the functional dead space to tidal volume fell from 0.3 to 0.19 and a similar decrease was recorded in breathing through the tube.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0369-9463
pubmed:author
pubmed:issnType
Print
pubmed:volume
39
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
443-7
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Ventilation of an additional dead space.
pubmed:affiliation
Department of Sports Medicine, Faculty of Paediatrics, Charles University, Prague.
pubmed:publicationType
Journal Article