Comparison of lung function response between tiotropium inhalation solution and Spiriva HandiHaler.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
76
Boehringer Ingelheim Investigational Site
Study Chairs Or Principal Investigators, Belgium
Boehringer Ingelheim Investigational Site
Study Chairs Or Principal Investigators, Netherlands
Comparison of trough FEV1 values at the end of 4-week treatment with tiotropium inhalation solution (5 mcg, 10 mcg) to that achieved with tiotropium inhalation powder (Spiriva 18 mcg).
Trough forced vital capacity (FVC) response after 4 weeks (change from baseline)
Time frame: baseline until week 28
Peak response (FEV1 and FVC) to first dose
Time frame: within 3 hours to first dose
Peak response (FEV1 and FVC) after 4 weeks
Time frame: within 3 hours after 4 weeks
FEV1 AUC0-12h and FVC AUC0-12h response after 4 weeks
Time frame: after 4 weeks
FEV1 AUC0-3h and FVC AUC0-3h response after the first dose and after 4 weeks
Time frame: after first dose and after 4 weeks
Individual FEV1and FVC measurements at each time point
Time frame: up to 28 weeks
Pre-dose morning and evening peak expiratory flow rate (PEFR) measured by patients
Time frame: up to 28 weeks
Number of occasions of rescue therapy used as required (p.r.n. salbutamol)
Time frame: up to 28 weeks
Median time to onset of therapeutic response after first dose
Time frame: after 4 weeks
Number of patients with 15% response above baseline for each treatment at each timepoint after first dose
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Time frame: at week 4, 12, 20
Number of patients with 15% response above baseline for each treatment at each timepoint after 4 weeks
Time frame: at week 8, 16, 24