Abstract
Fluticasone propionate, an inhaled corticosteroid with negligible systemic bioavailability via the oral route, is efficacious in the treatment of asthma when administered via metered-dose inhaler. To evaluate the efficacy and safety of inhaled fluticasone propionate powder in patients with moderate asthma previously treated with an inhaled corticosteroid. This was a randomized, double-blind, placebo-controlled, parallel-group, multicenter study of 342 adolescent and adult patients with moderate asthma [forced expiratory volume in 1 second (FEV1) between 50% and 80% of predicted] treated previously by beclomethasone dipropionate or triamcinolone acetonide. Patients received fluticasone propionate powder 50 micrograms, 100 micrograms, 250 micrograms, or placebo via a breath-actuated inhalation device, the Diskhaler, twice daily for 12 weeks. Patients in the fluticasone propionate groups experienced a mean increase from baseline to endpoint in FEV1 ranging from 0.43 L to 0.47 L. Patients in the placebo group experienced a mean decrease from baseline of 0.22 L (P < .001). The probability of patients remaining in the study over time without developing signs of exacerbating asthma was significantly greater in the fluticasone propionate groups than in the placebo group (P = .001). Asthma symptom scores, supplemental rescue albuterol use, and number of nighttime awakenings due to asthma requiring treatment also improved significantly with all fluticasone propionate treatment regimens compared with placebo (P < .001). There were no statistically significant differences at endpoint among the three fluticasone propionate groups. No serious drug-related adverse events occurred. Fluticasone propionate powder (50, 100, and 250 micrograms) was well-tolerated and significantly improved lung function in patients with moderate asthma.
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More From: Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology
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