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[Shearing anomalies of the arterial endothelium in essential arterial hypertension]

A Simon1, J Levenson

  • 1Centre de diagnostic, hôpital Broussais, Paris.

Archives Des Maladies Du Coeur Et Des Vaisseaux
|June 1, 1988
PubMed

Insights

Untreated hypertensive patients exhibit altered brachial artery blood flow dynamics. They show higher blood viscosity and lower wall shear stress and rate, potentially contributing to atherosclerosis.

Area of Science:

  • Cardiovascular Physiology
  • Biomedical Engineering
  • Rheology

Context:

  • Hypertension is a major risk factor for cardiovascular disease.
  • Arterial wall shear stress and rate are critical hemodynamic factors influencing vascular health.
  • Previous research has primarily focused on small arteries and arterioles.

Purpose:

  • To investigate brachial artery wall shear rate and stress in untreated hypertensive patients compared to normotensive controls.
  • To characterize blood flow alterations in large arteries of hypertensive individuals.

Summary:

  • This study measured brachial artery diameter, blood velocity, and viscosity in 20 hypertensive patients and 11 controls.
  • Hypertensive patients demonstrated significantly higher blood viscosity and lower systolic and mean wall shear rate and systolic wall shear stress.
  • These findings represent the first description of wall shear abnormalities in the large arteries of hypertensive patients.

Impact:

  • Identifies novel hemodynamic alterations in the brachial artery of hypertensive patients.
  • Highlights the potential role of reduced wall shear stress and rate in the atherogenic process associated with hypertension.
  • Suggests these findings warrant further investigation due to their implications for cardiovascular risk.

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