Influence of two different inhalation devices on therapy compliance in asthmatic patients.
SourceScandinavian Journal of Primary Health Care, 20, 2, (2002), pp. 126-8
Article / Letter to editor
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Scandinavian Journal of Primary Health Care
SubjectControl mechanisms in asthma and chronic obstructive pulmonary disease.; General Practice; Regulatie mechanismen bij astma en chronisch obstructieve longaandoeningen
OBJECTIVE: To examine the influence of inhalation device (Autohaler versus metered dose inhaler) and patients' subjective opinion towards the different devices, as well as daily frequency and duration of treatment on medication compliance. DESIGN: Prospective study measuring compliance in the same patients of the Autohaler twice daily with the metered dose inhaler twice daily, as well the Autohaler twice daily with the Autohaler four times daily. SETTING: Primary health care. SUBJECTS: 34 subjects with asthma. MAIN OUTCOME MEASURES: Patients preference and compliance. RESULTS: Patients preferred the Autohaler. The percentage of patients with a negative opinion towards the metered dose inhaler was 38% compared with 12% towards the Autohaler. The median values of the compliance rate of the Autohaler with twice and four times daily frequency were 90.8% (25-75th percentile 61.6-98.0%) and 78.5% (25-75th percentile 49.0%-91.2%), respectively (p < 0.001). The duration of treatment period had a significant negative influence on compliance when four times daily dosage frequency was prescribed (p = 0.05). CONCLUSION: In conclusion, the devices (metered dose inhaler and Autohaler) and the patients' opinion about the devices did not significantly contribute to the compliance rates. Compliance towards the medication treatment, however, is negatively influenced by a high daily frequency.
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