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Cognitive impairment is related to increased arterial stiffness and microvascular damage in patients with

Helen Triantafyllidi1, Chrysa Arvaniti, John Lekakis

  • 12nd Department of Cardiology, Medical School, University of Athens, Attikon Hospital, Athens, Greece. seliani@hotmail.com

American Journal of Hypertension
|March 7, 2009
PubMed

Insights

Essential hypertension is linked to cognitive decline. Increased large artery stiffness and microvascular damage, indicated by microalbuminuria, are associated with impaired cognitive function in hypertensive patients.

Area of Science:

  • Cardiology
  • Neurology
  • Nephrology

Background:

  • Essential hypertension is a known risk factor for cognitive impairment, potentially linked to cerebral microvascular disease.
  • Increased stiffness in large arteries may promote microvascular changes via elevated pulsatile blood flow.
  • This study investigates the relationship between large artery stiffness, microvascular damage, and cognitive function in hypertensive individuals.

Purpose of the Study:

  • To test the hypothesis that large artery stiffness and microvascular damage are associated with changes in brain microcirculation, reflected by cognitive function.
  • To explore the link between arterial stiffness, microalbuminuria, and cognitive impairment in newly diagnosed essential hypertension.

Main Methods:

  • 110 patients (40-80 years) with newly diagnosed essential hypertension were studied.
  • Cognitive function was assessed using the Mini-Mental State Examination (MMSE).
  • Arterial stiffness was evaluated using 2-D echocardiography and carotid-femoral pulse wave velocity (PWV); microvascular damage was assessed by 24-h urine microalbumin excretion.

Main Results:

  • MMSE scores showed a negative correlation with age, 24-h pulse pressure, and PWV across the study population.
  • In patients over 65, MMSE was significantly correlated with microalbuminuria.
  • These results indicate a connection between arterial stiffness, microvascular damage, and cognitive function.

Conclusions:

  • Impaired cognitive function is associated with increased large artery stiffness and microalbuminuria in newly diagnosed, untreated hypertensive patients.
  • Findings support the hypothesis that cognitive impairment, stemming from microcirculation issues, is linked to large artery stiffness and microvascular damage.
  • Early detection and management of arterial stiffness and microvascular damage may be crucial for preserving cognitive function in hypertension.
Abstract

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