The primary objective of this study is to characterize the pharmacokinetics (i.e. systemic exposure to tiotropium and salmeterol) of tiotropium qd + salmeterol qd or bid versus tiotropium qd and salmeterol bid following 4-week treatment periods in patients with chronic obstructive pulmonary disease (COPD).
Study Type
INTERVENTIONAL
Purpose
TREATMENT
Enrollment
50
1184.24.32001 Boehringer Ingelheim Investigational Site
Genk, Belgium
1184.24.32002 Boehringer Ingelheim Investigational Site
Hasselt, Belgium
1184.24.31001 Boehringer Ingelheim Investigational Site
Heerlen, Netherlands
Area under the concentration-time curve (AUC0-∞ ) of tiotropium in plasma
Time frame: 16 weeks
Maximum measured concentration of tiotropium in plasma (Cmax)
Time frame: 16 weeks
Amount of tiotropium that was eliminated in urine (Ae0-8) from time point 0 to 8 hours post-inhalation
Time frame: 16 weeks
AUC0-∞ of salmeterol in plasma
Time frame: 16 weeks
Cmax salmeterol in plasma
Time frame: 16 weeks
Area under the concentration time curve (AUCt1-t2) of tiotropium and salmeterol in plasma over the time interval t1 to t2 for time intervals 0 to 4, 0 to 6, and 0 to 8 hours after inhalation (AUC0-4, AUC0-6, and AUC0-8)
Time frame: 16 weeks
Time from dosing to the maximum concentration of tiotropium and salmeterol in plasma (tmax)
Time frame: 16 weeks
Terminal rate constant in plasma (λz)
Time frame: 16 weeks
Terminal half-life (t½) of tiotropium and salmeterol in plasma)
Time frame: 16 weeks
Mean residence time (MRTih) of tiotropium and salmeterol in the body after inhalational administration
Time frame: 16 weeks
Apparent clearance (CL/F) of tiotropium and salmeterol in plasma after extravascular administration)
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Time frame: 16 weeks
Apparent volume of distribution (Vz/F) during the terminal phase (λz) following an extravascular dose)
Time frame: 16 weeks
Amount of tiotropium that is eliminated in urine from the time point t1 to time point t2 (Aet1-t2) (Ae0-2, Ae2-4, Ae4-8, Ae0-8)
Time frame: 16 weeks
Fraction of tiotropium eliminated in urine from time point t1 to time point t2 (fet1-t2) (fe0-2, fe2-4, fe4-8, fe0-8)
Time frame: 16 weeks
Renal clearance of tiotropium from the time point t1 until the time point t2 (CLR,t1-t2) (CLR,0-2, CLR, 2-4, CLR,4-8, CLR,0-8)
Time frame: 16 weeks
All adverse events
Time frame: 20 weeks
Blood pressure (seated) recorded in conjunction with 12-lead ECG recordings pre-dose and following the morning dose of randomized treatment
Time frame: 20 weeks
Number of patients with abnormalities in routine blood chemistry, haematology and urinalysis
Time frame: 16 weeks
Trough forced expiratory volume in one second (FEV1)
Time frame: 16 weeks
Trough forced vital capacity (FVC)
Time frame: 16 weeks
FEV1 area under the curve 0 to 8 hours (FEV1 AUC0-8h)
Time frame: 16 weeks
FVC area under the curve 0 to 8 hours (FVC AUC0-8h)
Time frame: 16 weeks
Individual FEV1and FVC measurements at each time point at the end of each 4-week treatment period.
Time frame: 16 weeks