Objective:To explore the effect of different specifications of salmeterol and fluticasone in the treatment of elderly patients with stable COPD.Methods:82 elderly patients with stable COPD were selected.They were divided into the A group(50 μg/250 μg salmeterol and fluticasone) and the B group(50 μg/500 μg salmeterol and fluticasone).We observed the efficacy of the two groups.Results:The clinical efficacy of the B group was significantly better than that of the A group.After treatment,in the B group,arteria...