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Published on: April 23, 2021
Antihypertensive medication use and risk of cognitive impairment: the Honolulu-Asia Aging Study
Rebecca P Gelber1, G Webster Ross, Helen Petrovitch
1VA Pacific Islands Health Care System, University of Hawaii John A. Burns School of Medicine, Honolulu, HI, USA. rebecca.gelber@va.gov
Insights
Beta-blocker use was linked to a reduced risk of cognitive impairment in elderly hypertensive men. This finding suggests a potential protective effect of beta-blockers against cognitive decline in this population.
Area of Science:
- Gerontology
- Cardiovascular Medicine
- Neurology
Background:
- Hypertension is a significant risk factor for cognitive impairment in the elderly.
- Understanding the impact of antihypertensive medications on cognitive health is crucial for geriatric care.
Purpose of the Study:
- To investigate the association between different classes of antihypertensive medications and the risk of cognitive impairment in elderly hypertensive men.
Main Methods:
- Prospective community-based cohort study (Honolulu-Asia Aging Study) of 2,197 Japanese American men.
- Participants with hypertension but no baseline cognitive impairment were followed for cognitive function using the Cognitive Abilities Screening Instrument (CASI).
- Cognitive impairment was defined as a CASI score <74, with 854 men developing impairment over a median follow-up of 5.8 years.
Main Results:
- Beta-blocker monotherapy was associated with a significantly lower risk of cognitive impairment (IRR 0.69; 95% CI 0.50-0.94) compared to no antihypertensive medication.
- No significant associations were found for diuretics, calcium channel blockers, ACE inhibitors, or vasodilators used alone.
- The protective association of beta-blockers was more pronounced in men with diabetes, those over 75 years, and individuals with higher pulse pressure.
Conclusions:
- Beta-blocker use is associated with a reduced risk of developing cognitive impairment in elderly hypertensive Japanese American men.
- These findings highlight the potential neuroprotective role of beta-blockers in managing hypertension-related cognitive decline.
Objective:
To determine the associations between classes of antihypertensive medication use and the risk of cognitive impairment among elderly hypertensive men.
Methods:
The Honolulu-Asia Aging Study is a prospective, community-based cohort study of Japanese American men conducted in Honolulu, Hawaii. We examined 2,197 participants (mean age 77 years at cohort entry, 1991-1993, followed through September 2010) with hypertension and without dementia or cognitive impairment at baseline, who provided information on medication use. Cognitive function was assessed at 7 standardized examinations using the Cognitive Abilities Screening Instrument (CASI). Cognitive impairment was defined as a CASI score <74.
Results:
A total of 854 men developed cognitive impairment (median follow-up, 5.8 years). β-Blocker use as the sole antihypertensive drug at baseline was consistently associated with a lower risk of cognitive impairment (incidence rate ratio [IRR] 0.69; 95% confidence interval [CI] 0.50-0.94), as compared with men not taking any antihypertensive medications, adjusting for multiple potential confounders. The use of diuretics, calcium channel blockers, angiotensin-converting enzyme inhibitors, or vasodilators alone was not significantly associated with cognitive impairment. Results were similar excluding those with cardiovascular disease or <1 year of follow-up, and additionally adjusting for pulse pressure, heart rate, baseline and midlife systolic blood pressure, and midlife antihypertensive treatment (IRR 0.65; 95% CI 0.45-0.94). The association between β-blocker use and cognitive impairment was stronger among men with diabetes, men aged >75 years, and those with pulse pressure ≥70 mm Hg.
Conclusions:
β-blocker use is associated with a lower risk of developing cognitive impairment in elderly Japanese American men.
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