Linked Life Data

1804665

Source:http://linkedlifedata.com/resource/pubmed/id/1804665

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
1992-5-1
pubmed:abstractText
We have studied the relationship between emphysema and airways collapse, and response to corticosteroids in patients with chronic airflow obstruction. One hundred and seven patients completed a placebo-controlled trial comparing 2 wks treatment with oral prednisolone 40 mg.day-1 to inhaled beclomethasone dipropionate 500 micrograms t.d.s. Response to corticosteroids was defined on the basis of changes in forced expiratory volume in one second (FEV1), and/or forced vital capacity (FVC), and/or mean peak expiratory flow (PEF) after treatment. Patients were categorized as those with physiologically defined emphysema (carbon monoxide transfer coefficient (KCO) less than 70% predicted and total lung capacity greater than 120% predicted), and those with pressure dependent airways collapse on the flow-volume loop (ratio of inspiratory to expiratory flow at 50% vital capacity [I:E50] greater than 10). The response to placebo showed a significant order effect, probably due to a carry-over effect of active treatment of at least 3 wks. Hence, the efficacy of active treatment over placebo in the subgroups defined was assessed by analysis of data generated from the first treatment phase of the trial. The presence or absence of physiologically defined emphysema did not affect the response to oral prednisolone. Inhaled beclomethasone dipropionate, however, was less effective in the emphysema group. Pressure dependent airways collapse did not affect the response to either prednisolone or beclomethasone. However, when data from all three treatment phases were analysed there was no significant difference in the response to either drug in any of the subgroups defined.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0903-1936
pubmed:author
pubmed:issnType
Print
pubmed:volume
4
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1185-90
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Response to corticosteroids in chronic airflow obstruction: relationship to emphysema and airways collapse.
pubmed:affiliation
Dept of Respiratory Medicine, East Birmingham Hospital, UK.
pubmed:publicationType
Journal Article, Clinical Trial, Comparative Study, Randomized Controlled Trial