Table 2 Airway responsiveness to methacholine, DI index and number of coughs for 32 min during and following the inhalationof methacholine
From: Bronchodilator effect of deep inspiration and bronchoconstriction-triggered cough
Airway responsiveness | |
PC20-FEV1 | 71.6 (GSEM, 1.28) mg/ml |
PC35-MEF40 | 21.1 (GSEM, 1.28) mg/ml |
PC35-PEF40 | 6.22 (GSEM, 1.27) mg/ml |
After inhalation of PC20-FEV1 concentration of methacholine | |
Percent decrease in FEV1 from the baseline value | 22.0 ± 9.0% |
Percent decrease in MEF40 from the baseline value | 53.4 ± 20.8% |
Percent decrease in PEF40 from the baseline value | 63.0 ± 18.2% |
(MEF40-PEF40)/PEF40 ratio (DI index) | 0.41 ± 0.39 |
Number of coughs | 39.3 ± 29.7/32 min |