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Accelerated coronary artery calcification in mildly reduced renal function of high-risk hypertensives: a 3-year

Michael Bursztyn1, Michael Motro, Ehud Grossman

  • 1Department of Medicine, Hadassah University Hospital, Mount Scopus, Jerusalem, Israel. bursz@cc.huij.ac.il

Journal of Hypertension
|September 26, 2003
PubMed

Insights

Mild renal dysfunction significantly accelerates coronary artery calcifications. This progression is two-fold greater in patients with reduced kidney function compared to those with normal function.

Area of Science:

  • Cardiology
  • Nephrology
  • Medical Imaging

Background:

  • Coronary artery calcifications (CAC) are a marker of atherosclerosis.
  • Renal dysfunction is increasingly recognized as a cardiovascular risk factor.
  • The impact of mild renal dysfunction on CAC progression requires further investigation.

Purpose of the Study:

  • To investigate the association between mild renal dysfunction and the progression of coronary artery calcifications.
  • To quantify the effect of reduced creatinine clearance on atherosclerosis burden in high-risk hypertensive patients.

Main Methods:

  • Prospective study of 313 high-risk hypertensive patients over 3 years.
  • Coronary artery calcifications assessed using dual-section spiral computed tomography (total coronary artery calcium score).
  • Patients categorized into renal dysfunction (creatinine clearance ≤ 60 ml/min) and normal renal function groups.

Main Results:

  • Coronary artery calcium score progression was two-fold higher in the renal dysfunction group compared to the normal group (P = 0.006).
  • Mild renal dysfunction was an independent predictor of accelerated CAC progression (OR 2.1).
  • Thiazide-based therapy was associated with faster CAC progression than nifedipine.

Conclusions:

  • Mild renal dysfunction accelerates coronary artery calcifications.
  • This effect is independent of traditional cardiovascular risk factors.
  • Renal function status should be considered in cardiovascular risk assessment.
Abstract

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