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Related Experiment Video

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Pulse Wave Velocity Testing in the Baltimore Longitudinal Study of Aging
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Nonlinear association between pulse wave velocity and cognitive function: a population-based study.

Erik D Nilsson1, Sölve Elmståhl, Lennart Minthon

  • 1aClinical Memory Research Unit, Department of Clinical Sciences, Lund University bDivision of Geriatric Medicine, Department of Health Sciences cDepartment of Clinical Sciences, Lund University, Skåne University Hospital, Malmö, Sweden.

Journal of Hypertension
|October 3, 2014
PubMed
Summary
This summary is machine-generated.

Arterial stiffness, measured by carotid-femoral pulse wave velocity (cfPWV), is linked to cognitive decline. Individuals with the highest cfPWV values showed significantly worse cognitive function, highlighting a nonlinear association.

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Area of Science:

  • Cardiovascular Health
  • Neuroscience
  • Aging Research

Background:

  • Arterial stiffness is increasingly recognized as a potential contributor to cognitive decline.
  • Previous research on the association between arterial stiffness and cognitive function has yielded inconsistent findings.
  • Carotid-femoral pulse wave velocity (cfPWV) is a validated non-invasive measure of systemic arterial stiffness.

Purpose of the Study:

  • To investigate the relationship between carotid-femoral pulse wave velocity (cfPWV) and cognitive function.
  • To determine if arterial stiffness is associated with cognitive decline in an aging population.
  • To explore the nature of the association, whether linear or nonlinear.

Main Methods:

  • Cross-sectional study of 2637 participants from the Malmö Diet and Cancer Study (mean age 72.1 years).
  • Measurement of carotid-femoral pulse wave velocity (cfPWV) between 2007 and 2012.
  • Assessment of cognitive function using the A Quick Test of Cognitive Speed (AQT) and Mini Mental State Examination (MMSE).

Main Results:

  • A significant nonlinear association was observed between cfPWV and cognitive function.
  • Individuals in the top decile of cfPWV (cfPWV >13.8) exhibited significantly poorer performance on cognitive tests (AQT and MMSE).
  • The linear association between continuous cfPWV and AQT disappeared when nonlinearity was accounted for.

Conclusions:

  • Arterial stiffness is inversely associated with cognitive function in a nonlinear manner.
  • The most pronounced effects on cognitive function are seen in individuals with the highest levels of arterial stiffness.
  • Linear regression analyses may obscure significant associations due to pronounced nonlinearity, necessitating cautious interpretation.