ArticleJACC. Advances2026
Incidence of Dementia in Older Adults Hospitalized With Acute Coronary Syndrome: Insights From KP-Brain-Heart Health Study.
Article in JACC. Advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundCognitive decline has been reported after coronary artery revascularization, but whether it reflects procedure-specific effects or the burden of underlying vascular disease remains uncertain.
objectivesTo determine whether incident dementia risk differs according to coronary revascularization strategy among older adults with acute coronary syndrome (ACS).
methodsWe conducted a longitudinal cohort study among adults aged ≥65 years hospitalized for ACS between 2010 and 2020 (n = 25,176). Patients underwent percutaneous coronary intervention (n = 8,043), coronary artery bypass grafting (n = 797), or received no revascularization (n = 16,336). A second comparator cohort included patients with stable coronary artery disease (CAD) without revascularization (n = 154,299). The primary outcome was incident dementia identified using validated International Classification of Diseases codes after a 1-year washout. Propensity-matched analyses used Cox models accounting for the competing risk of death.
resultsRevascularized patients were younger (74.8 ± 6.9 vs 77.1 ± 8.2 years), more often male (66.2% vs 54.0%), and had lower Elixhauser multimorbidity scores (4.6 ± 2.8 vs 5.4 ± 3.0, all P < 0.001). Over a median 4.8 years of follow-up, 9.0% of ACS patients developed dementia. Revascularization was not associated with increased dementia risk compared with ACS without revascularization (sub-hazard ratio: 1.05; 95% CI: 0.95-1.17) or stable CAD. Dementia risk was also similar between percutaneous coronary intervention and coronary artery bypass grafting.
conclusionsWe found that among older adults with ACS, coronary revascularization was not statistically significantly associated with increased dementia risk compared with no revascularization or stable CAD. These findings reflect the hypothesis that the majority of dementia risk is potentially driven more by cumulative vascular and systemic factors than by procedure-specific neurotoxicity.
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