Dataset from The Acute Bronchodilator Effects of a Single Dose (2 Puffs) of the Shortacting Anticholinergic Ipratropium Bromide (40μg) and the Short-acting Beta-adrenergic Fenoterol (200μg) in Comparison to Placebo on Top of Pharmacodynamic Steady State of Once Daily Tiotropium (18μg) Inhalation Capsule in Patients With Chronic Pulmonary Disease (COPD)

To evaluate acute effect of single dose of ipratropium (Atrovent) or fenoterol (Berotec) in comparison to placebo when given to COPD patients on pharmacodynamic steady state of tiotropium (Spiriva)