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Characteristics predicting incorrect metered-dose inhaler technique in older subjects
S L Gray1, D M Williams, C C Pulliam
1School of Pharmacy, University of North Carolina, Chapel Hill, USA.
Archives of Internal Medicine
|May 13, 1996
Summary
Cognitive status and hand strength predict correct metered-dose inhaler (MDI) use in older adults. Impaired cognition or weak grip increases the risk of incorrect MDI technique, requiring tailored interventions.
Area of Science:
- Gerontology
- Respiratory Medicine
- Pharmacology
Background:
- Metered-dose inhalers (MDIs) are crucial for respiratory disease management in older adults.
- Correct MDI technique is essential for optimal drug delivery and therapeutic efficacy.
- Age-related changes may impact the ability of older adults to use MDIs correctly.
Purpose of the Study:
- To investigate the predictive value of cognitive status, hand strength, and demographics on correct MDI use in older individuals.
- To identify factors associated with improper MDI technique in the elderly population.
Main Methods:
- A study involving 71 subjects over 50 years old with limited prior MDI experience.
- Assessment of cognitive function using the Mini-Mental State Examination (MMSE) and hand strength.
- Instruction on proper MDI technique, followed by immediate and 1-week post-instruction assessments of technique.
Main Results:
- 56% of subjects used MDIs correctly at 1 week.
- Lower hand strength (OR 0.68), MMSE score < 24 (OR 3.66), and male gender (OR 5.01) predicted incorrect MDI use.
- Correct MDI technique was not significantly related to age, education, or subject group.
Conclusions:
- Cognitive status and hand strength are significant factors influencing correct MDI use in older adults.
- Clinicians should assess these factors when prescribing MDIs to the elderly.
- Individuals with cognitive impairment or reduced hand strength may need enhanced training and follow-up or alternative inhaler devices.
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