This study will test the safety and effectiveness of a range of doses of MK0476 (montelukast) compared to placebo on improved lung function in patients with chronic asthma.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
68
5 Period, Cross-over, Dose-Ranging study. Period I: no treatment. Periods II-V: Single-dose administration of inhaled montelukast (using doses as low as 25 mcg, to as high as 1000 mcg), or montelukast placebo. Two puffs of albuterol or albuterol placebo will be given four hours after montelukast/montelukast placebo.
5 Period, Cross-over, Dose-Ranging study. Period I: no treatment. Periods II-V: Single-dose administration of inhaled montelukast (using doses as low as 25 mcg, to as high as 1000 mcg), or montelukast placebo. Two puffs of albuterol or albuterol placebo will be given four hours after montelukast/montelukast placebo.
Change From Baseline in FEV1 Over 4 Hours
FEV1 measurements taken at 0 (=baseline), 10, 20, 30, 45, 60, 120, 180 and 240 minutes contributed to the average change from baseline over 4 hours. The number of minutes between consecutive measurements was used as weighting factor. The time-weighted average change was standardized by dividing by the time associated with the last measurement.
Time frame: 0 (=baseline) to 4 hours after treatment with montelukast
Change From Baseline in FEV1 Over 90 Minutes After Albuterol/Placebo Administration
FEV1 measurements taken at 0 (=baseline), 15, 30, 60, and 90 minutes after albuterol/placebo administration contributed to the average change from baseline over 90 minutes. The number of minutes between consecutive measurements was used as weighting factor. The time-weighted average change was standardized by dividing by the time associated with the last measurement.
Time frame: 4 hours (equals time point at which albuterol or albuterol placebo is administered) to 5.5 hours after treatment with montelukast
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