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  • Title: Formoterol and tiotropium compared with tiotropium alone for treatment of COPD.
    Author: Tashkin DP, Pearle J, Iezzoni D, Varghese ST.
    Journal: COPD; 2009 Feb; 6(1):17-25. PubMed ID: 19229704.
    Abstract:
    Combined use of beta(2)-agonists and anticholinergic bronchodilators may have complementary benefits in patients with chronic obstructive pulmonary disease (COPD). The objective of this study was to compare combination treatment with formoterol (FORM) plus tiotropium (TIO) versus treatment with TIO alone in patients with COPD. In this active-controlled, double-blind, multicenter trial, a total of 255 subjects with diagnosed COPD were randomized to 12 weeks of either a combination of FORM 12 microg twice-daily plus TIO 18 microg once-daily in the morning (QD AM) or monotherapy with TIO 18 microg QD AM. The primary efficacy variable was the area under the curve for forced expiratory volume in 1 second measured 0 to 4 hours after AM dosing (FEV(1) AUC(0-4h)). Significantly greater improvements in the FEV(1) AUC(0-4h) were seen with FORM + TIO (n = 116) versus TIO (n = 124) at all time points. The increase in FEV(1) 5 minutes after the first dose was 180 mL with FORM + TIO versus 40 mL with TIO (p < 0.001). At endpoint, FEV(1) AUC(0-4h) increased 340 mL with FORM + TIO versus 170 mL with TIO (p < 0.001). Improvements in trough FEV(1) with FORM + TIO versus TIO were 180 mL and 100 mL, respectively (p < 0.01). Significantly greater reductions from baseline in symptom scores (p < 0.05) and daytime albuterol use (p < 0.04) were seen at endpoint with combination FORM + TIO versus TIO monotherapy. Both treatments were well tolerated. This study demonstrated that concurrent treatment with FORM + TIO results in greater therapeutic benefits than TIO alone.
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