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Drugs & Aging

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30.06.2020 | Original Research Article

Assessment of Poor Inhaler Technique in Older Patients with Asthma or COPD: A Predictive Tool for Clinical Risk and Inhaler Performance

verfasst von: Tiago Maricoto, Duarte Santos, Catarina Carvalho, Inês Teles, Jaime Correia-de-Sousa, Luís Taborda-Barata

Erschienen in: Drugs & Aging | Ausgabe 8/2020

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Abstract

Background/Objectives

Older patients with asthma or chronic obstructive pulmonary disease (COPD) are particularly susceptible to inhaler technique errors and poor clinical outcomes. Several factors may influence their risk, but most studies are inconsistent and contradictory. We developed a tool for the major predictors of individual risk in these patients.

Design, Setting and Participants

In this multicentre, cross-sectional study, several demographic, socioeconomic and clinical characteristics were collected as potential predictors. Clinical features and inhaler technique performance were the main outcomes. Linear and logistic regression models were set up to identify significant variables. Subgroup analysis was performed according to age, cognitive performance and different types of inhalers.

Results

We included 130 participants, mean age of 74.4 (± 6.4) years. Mean years of device use were 5.8 (± 7.3). Inhaler errors affected 71.6% (95% CI 64–78.5) and critical mistakes 31.1% (95% CI 24–38.8). There were respiratory comorbidities in 82.3% of participants, and 56.2% had moderate to severe disease. A predictive score of misuse probability was developed for clinical practice, including points attributable to cognitive score, adherence and having received previous education on a placebo device. Other significant variables of individual risk were having respiratory allergies or comorbidities, smoking status, depression and educational level. Worse performance was detected in cognitively impaired patients older than 75 years who were using dry powder inhalers (DPI). Lung function was associated with smoking load, incorrect dose activation and absent end pause after inhalation.

Conclusions

Individual risk assessment in older individuals should focus on inhaler technique performance (mainly on dose activation and end pause) and adherence, smoking, respiratory comorbidities and cognitive impairment. Placebo device training provided by doctors seems to best suit these patients.

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Titel: Assessment of Poor Inhaler Technique in Older Patients with Asthma or COPD: A Predictive Tool for Clinical Risk and Inhaler Performance
verfasst von: Tiago Maricoto
Duarte Santos
Catarina Carvalho
Inês Teles
Jaime Correia-de-Sousa
Luís Taborda-Barata
Publikationsdatum: 30.06.2020
Verlag: Springer International Publishing
Erschienen in: Drugs & Aging / Ausgabe 8/2020
Print ISSN: 1170-229X
Elektronische ISSN: 1179-1969
DOI: https://doi.org/10.1007/s40266-020-00779-6

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Background/Objectives

Design, Setting and Participants

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