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Abstract
Abstract Elderly patients frequently fail to achieve or to retain a competent inhaler technique using a conventional metered dose inhaler. In a prospective, randomised, crossover study of 44 subjects aged 64–94 (mean 78) years, we compared a metered dose inhaler (MDI) with a breath actuated inhaler (BAI) in terms of inhaler technique, ease of teaching and patient acceptability. Patients were stratified according to physical, functional or cognitive impairment before randomisation. Structured tuition was provided at the start of treatments, and technique was graded weekly and retaught if deficient. At the start of the treatment periods satisfactory technique was observed in 14 of 35 patients (six impaired, eight unimpaired) using the MDI and in 14 of 35 patients (three impaired, 11 unimpaired) using the BAI (P = 1.0). At the end of the four-week treatment periods satisfactory technique was observed in 19 of 30 patients (seven impaired, 12 unimpaired) using the MDI and in 27 patients (11 impaired, 16 unimpaired) using the BAI (P = 0.01). Mean weekly teaching times (minutes) were similar (MDI 7.0, BAI 6.5, P = 0.41) and there was no difference in terms of patient acceptability (P = 0.38). A breath actuated inhaler may be the preferred device for elderly patients as a greater proportion were able to retain satisfactory inhaler technique.
Published Version
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