Abstract
The aim of this pilot study was to explore the relative efficacy in terms of improvement in symptoms and lung function of combining fluticasone propionate/salmeterol combination (FSC) and tiotropium in patients with severe-to-very severe stable COPD. Ninety patients were randomized to receive 3 months of treatment in one of three treatment groups: (1) FSC 500/50 μg Diskus, 1 inhalation twice daily+placebo Handihaler 1 inhalation once-daily daily; (2) tiotropium 18 μg Handihaler, 1 inhalation once daily+placebo Diskus, 1 inhalation twice daily; (3) FSC 500/50 μg Diskus, 1 inhalation twice daily+tiotropium 18 μg Handihaler, 1 inhalation once-daily daily. Patients attended the clinic before and after 1 month, 2 months, and 3 months of treatment for evaluations of pulmonary function, and dyspnea, which was assessed using a visual analog scale (VAS). Also the supplemental salbutamol use was measured. Eighty-one patients completed the 3-month treatment period: 26 patients receiving FSC, 26 patients receiving tiotropium, and 29 patients receiving FSC+tiotropium. Patients were withdrawn for COPD exacerbation. Improvements in trough FEV 1 with all treatments medications were observed by the first month when trough FEV 1 had improved significantly above baseline by 74 mL ( p < 0.05 ) in the tiotropium group, by 117 mL ( p < 0.05 ) in the FSC group and by 115 mL ( p < 0.05 ) in FSC+tiotropium group. At the end of the study, trough FEV 1 had improved significantly above baseline by141 mL ( p < 0.05 ) in the tiotropium group, by 140 mL ( p < 0.05 ) in the FSC group and by 186 mL ( p < 0.05 ) in FSC+tiotropium group. The difference between FSC and tiotropium appeared to decrease, that between FSC and FSC+tiotropium appeared to increase and that between tiotropium and FSC+tiotropium remained almost similar with study duration. Our results suggest that adding FSC and tiotropium may provide benefits in symptomatic patients with severe-to-very severe stable COPD.
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