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Vascular changes in hypertensive patients with different left ventricular geometry

S D Pierdomenico1, D Lapenna, M D Guglielmi

  • 1Hypertension Study and Treatment Center, Institute of Pathophysiology, G. D'Annunzio University, Chieti, Italy.

Journal of Hypertension
|December 1, 1995
PubMed
Summary

Hypertension alters blood vessels, with concentric left ventricular changes leading to thicker artery walls and increased resistance. These vascular changes may stem from hemodynamic forces and growth factor activity.

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Area of Science:

  • Cardiology
  • Vascular Biology
  • Hypertension Research

Background:

  • Hypertension is linked to structural changes in the heart's left ventricle.
  • Different patterns of left ventricular geometry may influence vascular adaptations.

Purpose of the Study:

  • To investigate vascular structural changes in hypertensive patients with varying left ventricular geometries.
  • To assess intimal-medial thickness and forearm vascular resistance in relation to left ventricular remodeling and hypertrophy.

Main Methods:

  • Evaluated 250 untreated hypertensive patients using ambulatory blood pressure monitoring and echocardiography.
  • Selected four matched groups based on left ventricular geometry: normal, concentric remodeling, concentric hypertrophy, and eccentric hypertrophy.
  • Utilized carotid ultrasonography for intimal-medial thickness and lumen diameter, and venous occlusion plethysmography for forearm vascular resistance.

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Main Results:

  • Significantly higher intimal-medial thickness and forearm vascular resistance were observed in patients with concentric left ventricular remodeling and hypertrophy compared to eccentric hypertrophy and normal geometry.
  • No significant difference in vascular measures between concentric remodeling and concentric hypertrophy groups.
  • A trend towards increased vascular measures was noted in eccentric hypertrophy versus normal geometry, but without statistical significance.

Conclusions:

  • Cardiac adaptation patterns in hypertension are associated with corresponding vascular adaptation spectrums.
  • These vascular changes may be influenced by hemodynamic stimuli and variations in vascular growth factor expression or activity.