rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
6
|
pubmed:dateCreated |
1981-1-29
|
pubmed:abstractText |
Fourteen subjects showing an increase of residual volume (RV) without any clinical or functional signs of bronchial obstruction were studied. Maximum expiratory flow volume (MEFV) curves were obtained with a pressure-corrected volume plethysmograph. Static pressure-volume curves were obtained by stepwise interruption of a slow expiration from total lung capacity (TLC) to RV. Static compliance was measured by the slope of pressure-volume curve between functional residual capacity (FRC) and FRC+20% of TLC. Maximum flow static recoil (MFSR) curves were constructed by plotting MEF obtained from MEFV curves against elastic pressure (Pst) obtained from pressure-volume curves at the same lung volumes. Most patients demonstrated a decrease of MEF 50% and 25% of VC. From the MFSR curves it was clear that this reduction was not the result of increased airways resistance, but rather of loss of elastic recoil. Most patients showed a significant decrease of Pst at different volumes and changes seem likely to be evidence of emphysema.
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pubmed:commentsCorrections |
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:status |
MEDLINE
|
pubmed:month |
Jun
|
pubmed:issn |
0040-6376
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:volume |
35
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
461-6
|
pubmed:dateRevised |
2010-9-13
|
pubmed:meshHeading |
pubmed-meshheading:7434303-Adult,
pubmed-meshheading:7434303-Airway Resistance,
pubmed-meshheading:7434303-Female,
pubmed-meshheading:7434303-Forced Expiratory Volume,
pubmed-meshheading:7434303-Humans,
pubmed-meshheading:7434303-Lung,
pubmed-meshheading:7434303-Lung Compliance,
pubmed-meshheading:7434303-Lung Diseases,
pubmed-meshheading:7434303-Lung Volume Measurements,
pubmed-meshheading:7434303-Male,
pubmed-meshheading:7434303-Middle Aged,
pubmed-meshheading:7434303-Residual Volume
|
pubmed:year |
1980
|
pubmed:articleTitle |
Lung mechanics in subjects showing increased residual volume without bronchial obstruction.
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pubmed:publicationType |
Journal Article
|