Linked Life Data

3589180

Source:http://linkedlifedata.com/resource/pubmed/id/3589180

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1987-7-17
pubmed:abstractText
The purpose of this study was to determine if the lung volume at which aerosol inhalation begins (LVi) influences airway responses to bronchoconstrictor agents. We compared the effects of carbachol boluses (25, 50 and 100 ml), inhaled at high and low LVi (averaging 72.2 and 15.8% of vital capacity, respectively) on specific airway resistance (SRaw). In order to eliminate the possible influence of airway obstruction on aerosol distribution and deposition, we selected 5 asthmatic subjects with normal respiratory function (spirometry, SRaw, nitrogen washout and closing volume); furthermore, non-cumulative dose-response curves were obtained (i.e. the patients inhaled only one dose of carbachol on a given test day). Inhaling carbachol at low LVi yielded a significantly (p less than 0.01) larger degree of bronchoconstriction. Differences in bronchial responses were probably due to differences in the amount of particles deposited in the airways and/or to their distribution. These data suggest that LVi should be controlled for quantified inhalation provocation tests.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0025-7931
pubmed:author
pubmed:issnType
Print
pubmed:volume
51
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
81-5
pubmed:dateRevised
2009-11-11
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Different bronchoconstrictor effects of carbachol boluses inhaled near residual volume or total lung capacity.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't