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Dementia, intelligence, and the competence to complete advance directives
Lancet (London, England)
|July 16, 1999
Summary
A small fraction of dementia patients can complete advance directives upon referral. Higher premorbid intelligence, measured by the National Adult Reading Test, predicted competence in these patients.
Area of Science:
- Neurology
- Cognitive Science
- Geriatrics
Background:
- Advance directives are crucial for patient autonomy in dementia care.
- Assessing competence to complete advance directives in dementia patients is challenging.
- Previous research has explored factors influencing decision-making capacity in cognitive impairment.
Discussion:
- Only 20% of dementia patients referred were competent to complete advance directives.
- Competence was significantly associated with higher premorbid intelligence.
- The National Adult Reading Test (NART) provided a reliable estimate of premorbid IQ.
Key Insights:
- Premorbid intelligence is a key factor in maintaining decision-making capacity for advance directives in dementia.
- Early assessment of competence is vital for ensuring patient wishes are documented.
- NART can be a valuable tool in evaluating cognitive reserve in dementia patients.
Outlook:
- Further research should explore other cognitive and non-cognitive factors influencing competence.
- Developing targeted interventions to support advance directive completion in early-stage dementia is needed.
- Integrating cognitive assessments into routine dementia care pathways can improve advance care planning.
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