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Significance of arterial hypertension on coronary collateral circulation development and left ventricular function in

E A Karpanou1, G P Vyssoulis, J N Skoumas

  • 1Cardiology Department, Athens University, Greece.

Journal of Hypertension. Supplement : Official Journal of the International Society of Hypertension
|December 1, 1988
PubMed

Insights

Arterial hypertension is linked to better coronary collateral circulation and preserved left ventricular function in men with coronary artery disease. This protective effect is more pronounced with more severe disease.

Area of Science:

  • Cardiology
  • Vascular Biology
  • Hypertension Research

Background:

  • Coronary artery disease (CAD) affects millions globally, with coronary collateral circulation (CCC) playing a crucial role in mitigating ischemic damage.
  • Arterial hypertension (AH) is a major risk factor for CAD, but its influence on CCC development and its impact on left ventricular (LV) function in the context of CAD severity remains an area of investigation.

Purpose of the Study:

  • To investigate the role of arterial hypertension in the development of coronary collateral circulation.
  • To assess the relationship between arterial hypertension, coronary collateral circulation, coronary artery disease severity, and left ventricular function in men.

Main Methods:

  • Study included 433 men with angiographically confirmed coronary artery disease.
  • Patients were categorized by number of diseased vessels (1, 2, or 3 vessels) and presence or absence of arterial hypertension.
  • Coronary collateral circulation was assessed, and coronary obstruction scores (Gensini) and left ventricular ejection fraction (LVEF) were determined.

Main Results:

  • Hypertensive patients (35.3%) showed a higher prevalence of coronary collateral circulation (70.6% vs. 57.1%, P=0.006), particularly high-grade CCC (27% vs. 15%, P=0.001), despite similar coronary obstruction scores.
  • Patients with CCC had more severe CAD, irrespective of hypertension status.
  • For similar CAD severity, hypertensive patients with CCC exhibited higher LVEF (52.6% vs. 46.1%, P=0.0006), notably in those with three-vessel disease and CCC (52% vs. 42.8%, P=0.002).

Conclusions:

  • Arterial hypertension is associated with enhanced coronary collateral circulation development in men with coronary artery disease.
  • Hypertension appears to have a protective effect on left ventricular function in the presence of significant coronary artery disease and well-developed collateral circulation.
  • These findings suggest a complex interplay where hypertension may promote beneficial collateralization, preserving myocardial function despite obstructive coronary lesions.

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