ArticleJournal of human hypertension2026
Arterial compliance, assessed by PTC1 and PTC2 from radial artery pressure waveforms, and cognitive performance: The Multi-Ethnic Study of Atherosclerosis.
Article in Journal of human hypertension, 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
Arterial stiffness is a contributor to cognitive decline. Pressure time constants (PTCs: PTC1, PTC2) are new measures of arterial compliance (inverse of stiffness) which are based on a Windkessel model of arterial pulse pressure waveforms. The methodology for PTCs is open-source and scalable. We evaluated the cross-sectional association between PTCs from radial artery pressure waveforms and cognitive performance: Global cognitive function (Cognitive Abilities Screening Instrument, CASI; score range 0-100); processing speed (Digit Symbol Coding, DSC; 0-133); and working memory (Digit Span, DS; 0-30). Among 3134 adults from 6 U.S. communities in 2010-2012 (aged 54-94 years; 47% male; 41% White, 25% Black, 23% Hispanic/Latino, 12% Chinese), the mean ± SD was 283 ± 127 ms for PTC1, 85 ± 31 ms for PTC2, 89 ± 8 for CASI, 51 ± 18 for DSC, and 15 ± 4 for DS. In the entire sample (after adjustment for community, race/ethnicity, and variables in the dementia score called "Cardiovascular Risk Factors, Aging, and Incidence of Dementia"), neither PTC1 nor PTC2 was associated with CASI, DSC, or DS. In exploratory analyses, after adjustment, one SD higher PTC2 was associated with a 1.4 (95% confidence interval: 0.4, 2.5; p = 0.004) higher mean DSC score among the subset with at least one APOE-ε4 allele (N = 828) and a 0.8 (0.1, 1.5; p = 0.03) higher mean DSC score among those 65 years and older (N = 2020). Higher radial artery PTC2 (lower arterial stiffness) was associated with faster processing speed among carriers of APOE-ε4 and older adults. Future work should investigate the association of PTCs with other indicators of brain health.
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