Preference, satisfaction and errors with two dry powder inhalers in patients with COPD.

To assess preference, satisfaction and critical errors with a novel, breath-actuated, multi-dose dry powder inhaler (DPI; Genuair®/Pressair™), versus a widely used, single-dose DPI (HandiHaler®) in patients with moderate-to-severe chronic obstructive pulmonary disease. In this randomised, open-label, multicentre, cross-over study, patients (aged ≥ 40 years) inhaled placebo once daily through both inhalers for 2 weeks in addition to current medication. The primary end point was percentage of patients who preferred Genuair to HandiHaler. Overall patient satisfaction (5-point scale: 1 = very dissatisfied; 5 = very satisfied), critical errors and willingness to continue using each inhaler (0 = not willing; 100 = definitely willing) were assessed. Of 130 patients randomised, 105 were included in the intent-to-treat population (71.4% male; mean age 65.7 years). After 2 weeks, significantly more patients preferred Genuair than HandiHaler (79.1 vs 20.9%; p < 0.0001). Overall satisfaction scores (4.6 vs 3.8; p < 0.0001) and willingness to continue use scores (84.0 vs 62.5; p < 0.0001) were significantly higher with Genuair versus HandiHaler. Significantly fewer patients made ≥ 1 critical error with Genuair only compared with HandiHaler only (2.9 vs 19.0%; p < 0.0001). After 2 weeks' practice, patients preferred and were more willing to continue using Genuair than HandiHaler. Genuair was associated with higher patient satisfaction and fewer critical errors than HandiHaler.

Citation

Job van der Palen, Thomas Ginko, Axel Kroker, Paul van der Valk, Martijn Goosens, Laura Padullés, Beatriz Seoane, Ludmyla Rekeda, Esther Garcia Gil. Preference, satisfaction and errors with two dry powder inhalers in patients with COPD. Expert opinion on drug delivery. 2013 Aug;10(8):1023-31

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PMID: 23745954

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