open access

Vol 72, No 11-12 (2004)
ORIGINAL PAPERS
Published online: 2008-02-18
Submitted: 2013-02-22
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The assessment of reversibility in airway obstruction

Izabela Toczyska, Wojciech Lubiński, Andrzej Chciałowski
Pneumonol Alergol Pol 2004;72(11-12):499-504.

open access

Vol 72, No 11-12 (2004)
ORIGINAL PAPERS
Published online: 2008-02-18
Submitted: 2013-02-22

Abstract


In the medical literature there have been described some methods to determine bronchodilator response. They are different because of the required percentage increase in FEV1 and /or FVC and the way of expressing results -as the percent of predicted or initial value. This study on 38 subjects evaluated that there is better bronchodilator responses when the results are presented as the percentage of the initial value compared with the predicted value. The intensivity of impovement in FEV1 depends on the baseline airway obstruction. There are more meaningfull responses in subjects with ’poor’ initial value when using the criteria of change in FEV1 as a percentage of initial value. About 10% of positive responses are misunderstood as ‘poor’ when it was considered improvement only in FEV1 (they are positive with reference only to FVC).
Pneumonol. Alergol. Pol. 2004, 72, 499:504

Abstract


In the medical literature there have been described some methods to determine bronchodilator response. They are different because of the required percentage increase in FEV1 and /or FVC and the way of expressing results -as the percent of predicted or initial value. This study on 38 subjects evaluated that there is better bronchodilator responses when the results are presented as the percentage of the initial value compared with the predicted value. The intensivity of impovement in FEV1 depends on the baseline airway obstruction. There are more meaningfull responses in subjects with ’poor’ initial value when using the criteria of change in FEV1 as a percentage of initial value. About 10% of positive responses are misunderstood as ‘poor’ when it was considered improvement only in FEV1 (they are positive with reference only to FVC).
Pneumonol. Alergol. Pol. 2004, 72, 499:504
Get Citation

Keywords

reversibility; predicted and initial value

About this article
Title

The assessment of reversibility in airway obstruction

Journal

Advances in Respiratory Medicine

Issue

Vol 72, No 11-12 (2004)

Pages

499-504

Published online

2008-02-18

Bibliographic record

Pneumonol Alergol Pol 2004;72(11-12):499-504.

Keywords

reversibility
predicted and initial value

Authors

Izabela Toczyska
Wojciech Lubiński
Andrzej Chciałowski

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