Association between blood viscosity and common carotid artery elasticity

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Cesare Tripolino1, Concetta Irace1, Claudio Carallo1

  • 1Department of Clinical and Experimental Medicine, "Magna Græcia" University, Catanzaro, Italy.

Clinical Hemorheology and Microcirculation
|September 28, 2015
PubMed

Insights

Increased blood viscosity is linked to reduced carotid artery elasticity, a key factor in cardiovascular health. This finding highlights the importance of hemorheological parameters in assessing vascular stiffness and cardiovascular risk.

Area of Science:

  • Cardiovascular Physiology
  • Hemodynamics
  • Vascular Biology

Background:

  • Arterial elasticity is crucial for cardiovascular health and is linked to atherosclerosis.
  • Hemodynamic factors, specifically blood viscosity, have been underexplored in relation to vascular stiffness.

Purpose of the Study:

  • To investigate the relationship between hemorheological parameters and vascular stiffness in the carotid artery.
  • To determine if blood viscosity is an independent predictor of carotid elasticity.

Main Methods:

  • 102 individuals underwent measurements of blood and plasma viscosity using a cone-plate viscometer.
  • Carotid artery elasticity was assessed using Echo-Doppler to calculate strain, β-stiffness index, and distensibility.
  • Regression analyses were performed to evaluate associations between hemorheological parameters and elastic indexes.

Main Results:

  • Blood viscosity showed significant associations with carotid elasticity indexes: directly with β-stiffness index and inversely with strain and distensibility.
  • After adjusting for cardiovascular risk factors, blood viscosity remained independently associated with carotid arterial measures.
  • Plasma viscosity and hematocrit were not independently associated with carotid elasticity.

Conclusions:

  • Blood viscosity is strongly associated with common carotid elasticity.
  • These findings suggest blood viscosity is an important hemorheological parameter influencing vascular stiffness.
Abstract

Keywords:
Blood viscositycarotid elasticityplasma viscosityultrasound

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