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Lack of correlation between left ventricular mass and diameter of left coronary artery main trunk in hypertensive

C Cuspidi1, L Lonati, L Sampieri

  • 1Istituto di Clinica Medica Generale e Terapia Medica and Centro Fisiologia Clinica e Ipertensione, Università di Milano and Ospedale Maggiore, IRCCS, Milano, Italy.

American Journal of Hypertension
|January 5, 2000
PubMed

Insights

In essential hypertension, increased left ventricular mass does not correlate with left coronary artery diameter. This suggests a potential mechanism for impaired coronary blood flow in hypertensive heart disease.

Area of Science:

  • Cardiology
  • Hypertension Research
  • Vascular Biology

Background:

  • Essential hypertension is linked to left ventricular hypertrophy (LVH).
  • The relationship between increased left ventricular mass and coronary artery dimensions in hypertension requires clarification.

Purpose of the Study:

  • To investigate if increased left ventricular mass in essential hypertensives is proportionally associated with left coronary artery (LCA) trunk diameter.
  • To explore potential mechanisms for coronary blood flow impairment in hypertensive patients with LVH.

Main Methods:

  • Echocardiography was used to measure left ventricular (LV) dimensions and calculate LV mass index (LVMI).
  • Left coronary artery (LCA) trunk diameter was measured using 2D echocardiography.
  • Study included 26 hypertensives (14 with LVH, 12 without) and 10 normotensive controls.

Main Results:

  • LVMI was significantly higher in hypertensives with LVH compared to those without and controls.
  • LCA trunk diameter was similar across all groups (hypertensives with LVH, hypertensives without LVH, and controls).
  • No significant correlation was found between LVMI and LCA diameter in hypertensive patients.

Conclusions:

  • Increased left ventricular mass in essential hypertension is not accompanied by a proportional increase in epicardial LCA diameter.
  • This disproportion may contribute to the reduced coronary blood flow reserve observed in patients with LVH.

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