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Cognitive impairment associated with beta-blockade in the elderly
1Department of Medicine, Weston-super-Mare General Hospital, UK.
Postgraduate Medical Journal
|December 1, 1990
Summary
Beta-blocker medications, including propranolol and atenolol, may cause or worsen mental impairment in elderly patients. Stopping these drugs led to significant improvement in cognitive function for affected individuals.
Area of Science:
- Gerontology
- Pharmacology
- Neuroscience
Background:
- Beta-adrenoceptor blocking agents are widely prescribed for cardiovascular conditions.
- Elderly individuals may be more susceptible to medication side effects.
- Cognitive impairment in the elderly is a significant public health concern.
Observation:
- Three elderly patients developed insidious mental impairment while on both lipophilic (propranolol) and hydrophilic (atenolol) beta-blockers.
- No evidence of impaired cerebral perfusion or depression was found.
- Cognitive function improved markedly in all patients upon discontinuation of the beta-blockers.
Findings:
- Beta-blockade, encompassing both lipophilic and hydrophilic agents, may precipitate or aggravate cognitive deficits in the elderly.
- Two patients showed persistent mild impairment, suggestive of underlying neurodegenerative conditions like Alzheimer's disease.
- One patient fully recovered cognitive function after drug withdrawal.
Implications:
- Clinicians should consider beta-blocker-induced cognitive impairment in elderly patients presenting with mental changes.
- Careful medication review and potential drug withdrawal may be beneficial for cognitive health in this population.
- Further research is warranted to elucidate the mechanisms underlying beta-blocker neurotoxicity in older adults.