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  • Title: Efficacy, safety, and acceptance of beclomethasone dipropionate administered via a new dry powder Inhaler or a standard CFC metered-dose inhaler in asthma patients.
    Author: Kunkel G, Schäper C, Noga O, Schläfke S, Lemmnitz G, Köhler S.
    Journal: Respiration; 2003; 70(4):399-406. PubMed ID: 14512676.
    Abstract:
    BACKGROUND/OBJECTIVES: The mechanical aerosol generator, MAGhaler, is a new chlorofluorocarbon-free inhalation device. The objective of this trial was to show equivalent efficacy and safety of beclomethasone dipropionate (BDP) delivered via the MAGhaler and the metered-dose inhaler (MDI) in patients with mild to moderate bronchial asthma. Moreover, user-friendliness and acceptance of the two devices were compared. METHODS: This was a double-blind, reference-controlled, 12-week trial in 171 patients with asthma receiving BDP (1,000 microg/day) delivered via either the MAGhaler or the conventional MDI. Respiratory function parameters, clinical symptoms, concomitant intake of salbutamol or fenoterol, adverse events (AEs), laboratory values, and concomitant medications and diseases were recorded. The primary efficacy parameter was mean forced expiratory volume in 1 s (FEV1), measured after 4, 8, and 12 weeks of therapy. RESULTS: The equivalence of the two devices was confirmed (p = 0.003) on the basis of the ratios of the mean FEV1 in weeks 4 to 12. Mean (+/- SD) FEV1 (MAGhaler was 2.24 +/- 0.60 l (baseline), 2.61 +/- 0.90 litres (week 4), and 2.62 +/- 0.87 litres (weeks 4-12). Mean FEV1 (MDI) was 2.28 +/- 0.59 litres (baseline), 2.53 +/- 0.82 litres (week 4), and 2.56 +/- 0.77 litres (weeks 4-12). In total, 33 AEs occurred in 26 (30.2%) patients (MAGhaler) and 51 AEs in 36 (42.4%) patients (MDI). Most of the AEs were of mild or moderate intensity. The relationship to treatment could not be excluded for 11 AEs in 11 patients (MAGhaler) and 23 AEs in 18 patients (MDI). Three serious AEs, all unrelated to treatment, occurred in 3 patients (MAGhaler: 2, MDI: 1). There were no clinically relevant changes in other safety parameters. Most patients either preferred the MAGhaler or rated the two devices as equally acceptable. CONCLUSION: The new MAGhaler was equivalent to the standard MDI in terms of the safety and efficacy of BDP. The improved user-friendliness and acceptance of the MAGhaler over the conventional MDI represent an important advance in the clinical management of bronchial asthma.
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