A Randomized, Double-blind, Double-dummy, Placebo- and Active-controlled, Parallel Group Efficacy and Safety Comparison of 12-week Treatment of Two Doses (5 Mcg and 10 Mcg) of Tiotropium Inhalation Solution Delivered by the Respimat Inhaler, Placebo and Ipratropium Bromide Inhalation Aerosol (MDI) i
A Randomized, Double-blind, Double-dummy, Placebo- and Active-controlled, Parallel Group Efficacy and Safety Comparison of 12-week Treatment of Two Doses (5 Mcg and 10 Mcg) of Tiotropium Inhalation Solution Delivered by the Respimat Inhaler, Placebo and Ipratropium Bromide Inhalation Aerosol (MDI) i
The primary objective was to compare the bronchodilator efficacy of two doses (5 mcg and 10 mcg) of tiotropium inhalation solution delivered by the Respimat inhaler once daily to placebo and to ipratropium bromide MDI four times daily in patients with COPD. The secondary objective was to compare the safety of tiotropium inhalation solution delivered by the Respimat to placebo and ipratropium bromide MDI.
Outpatients of either sex, aged >/= 40 years with a diagnosis of COPD (FEV1 </= 60% predicted [ECCS criteria] and FEV1/FVC </= 70%)
Ste-Foy, Quebec, Canada