Conditions: Chronic Obstructive Pulmonary Disease
Keywords: Chronic Obstructive Pulmonary Disease Onset of effect COPD Oxis Turbuhaler
Allocation: RANDOMIZED | Intervention model: CROSSOVER
Enrollment: 109
Healthy volunteers: no

Brief summary:
* Primary objective is to evaluate time to onset of effect of formoterol, 9 μg single dose,compared with salmeterol, 50 μg single dose, in patients with moderate COPD.Forced Expiratory Volume in 1 second (FEV1) measured by spirometry 5 minutes postdose.
* Secondary efficacy variables: Average FEV1 during the first 15 minutes (area under the FEV1 curve from 0 to 15 minutes), Average FEV1 during 120 minutes (area under the FEV1 curve from 0 to 120 minutes)

Detailed description:

Arms:
arm 1: Formoterol Turbuhaler 9 μg and Placebo Diskus first, then Salmeterol Diskus 50 μg and Placebo Turbuhaler, then Placebo Diskus and Placebo Turbuhaler arm 2: Salmeterol Diskus 50 μg and Placebo Turbuhaler first, then Placebo Diskus and Placebo Turbuhaler, then Formoterol Turbuhaler 9 μg and Placebo Diskus arm 3: Placebo Diskus and Placebo Turbuhaler first,then Formoterol Turbuhaler 9 μg and Placebo Diskus, then Salmeterol Diskus 50 μg and Placebo Turbuhaler arm 4: Formoterol Turbuhaler 9 μg and Placebo Diskus first, then Placebo Diskus and Placebo Turbuhaler, then Salmeterol Diskus 50 μg and Placebo Turbuhaler arm 5: Salmeterol Diskus 50 μg and Placebo Turbuhaler first, then Formoterol Turbuhaler 9 μg and Placebo Diskus, then Placebo Diskus and Placebo Turbuhaler arm 6: Placebo Diskus and Placebo Turbuhaler first, then Salmeterol Diskus 50 μg and Placebo Turbuhaler, then Formoterol Turbuhaler 9 μg and Placebo Diskus

Interventions: intervention 1: Formoterol intervention 2: Salmeterol intervention 3: Placebo
Intervention descriptions: intervention 1: Formoterol Turbuhaler 9 μg and Placebo Diskus intervention 2: Salmeterol Diskus 50 μg and Placebo Turbuhaler intervention 3: Placebo Diskus and Placebo Turbuhaler

Protocol document: