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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
5
|
| pubmed:dateCreated |
1991-1-31
|
| pubmed:abstractText |
All the information regarding the forced expiratory manoeuvre are contained in the simple volume-time spirogram. Flow-volume and time-domain indices could be derived by digitising the volume-time spirogram. This paper describes an electronic means of digitising the spirogram and demonstrates its capability in deriving flow-volume and time-domain spirometric indices. The spirograms of 118 granite quarry workers were digitised using an electronic digitising pen. The volume and time data are stored in a micro-computer and a programme written in dBASEIII Plus is used to smoothen and derive the standard volume-time, flow-volume and time domain indices. There was good agreement between digitised and hand-read values (intraclass correlation coefficients, rI, greater than 0.9) for the forced expiratory flow in one second (FEV1) and forced vital capacity (FVC) irrespective of the pulmonary status. There was a small but statistically significant difference between digitised and hand-read FEV1 for those with normal and restrictive pulmonary function groups (-115 ml/sec and 19 ml/sec respectively). There was however, no evidence of systematic bias between the two methods. The technique described herein provides a rapid and accurate means for deriving flow-volume and time domain indices from a volume-time spirogram. It also provides the opportunity to reanalyse previously collected volume-time spirograms and allow for the assessment of small airways function of these subjects using newer flow-volume and time domain indices.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:status |
MEDLINE
|
| pubmed:month |
Sep
|
| pubmed:issn |
0304-4602
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
19
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
605-10
|
| pubmed:dateRevised |
2004-11-17
|
| pubmed:meshHeading |
pubmed-meshheading:2260814-Forced Expiratory Volume,
pubmed-meshheading:2260814-Humans,
pubmed-meshheading:2260814-Microcomputers,
pubmed-meshheading:2260814-Occupational Diseases,
pubmed-meshheading:2260814-Signal Processing, Computer-Assisted,
pubmed-meshheading:2260814-Software,
pubmed-meshheading:2260814-Spirometry,
pubmed-meshheading:2260814-Vital Capacity
|
| pubmed:year |
1990
|
| pubmed:articleTitle |
Derivation of flow-volume and time domain spirometric indices by digitisation of volume-time spirograms.
|
| pubmed:affiliation |
Department of Community, Occupational and Family Physicians, National University of Singapore.
|
| pubmed:publicationType |
Journal Article
|