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Cardiovascular disease risk and cerebral blood flow velocity

Matthew P Pase1, Natalie A Grima, Con K Stough

  • 1Centre for Human Psychopharmacology, Swinburne University of Technology, 400 Burwood Road, Hawthorn, Australia. matthewpase@gmail.com

Stroke
|August 11, 2012
PubMed

Insights

Higher cardiovascular disease risk is linked to altered blood flow in the brain

Area of Science:

  • Neuroscience
  • Cardiology
  • Public Health

Background:

  • Cardiovascular disease (CVD) risk is a known predictor of cognitive decline.
  • The precise mechanisms linking CVD risk to cognitive impairment are not fully understood.
  • Elevated CVD risk may negatively impact cerebral blood flow, leading to cerebrovascular damage and dementia.

Purpose of the Study:

  • To investigate the association between cardiovascular risk and cerebral blood flow velocity.
  • To determine how cardiovascular risk influences blood flow in the common carotid and middle cerebral arteries.

Main Methods:

  • Examined 160 healthy middle-aged adults.
  • Utilized the Framingham General Cardiovascular Risk Profile to assess cardiovascular risk.
  • Measured blood flow velocity in the common carotid and middle cerebral arteries using Doppler ultrasonography.

Main Results:

  • Cardiovascular risk predicted higher pulsatile flow and lower mean flow velocity in both arteries.
  • These associations remained significant even after adjusting for age and sex.
  • Cardiovascular risk significantly predicted pulsatile, but not mean, flow velocity in the middle cerebral artery when controlling for age and sex.

Conclusions:

  • Cardiovascular risk exerts differential effects on mean and pulsatile blood flow velocity.
  • These alterations in cerebral blood flow may independently contribute to brain pathology and cognitive deficits.
  • Understanding these mechanisms could inform strategies for preventing cognitive decline in at-risk individuals.
Abstract

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