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Ambulatory blood pressure and coronary artery calcification in middle-aged and younger adults

Stephen T Turner1, Lawrence F Bielak, Arvind K Narayana

  • 1Department of Internal Medicine, Mayo Clinic and Foundation, Rochester, Minnesota 55905, USA. turner.stephen@mayo.edu

American Journal of Hypertension
|June 21, 2002
PubMed

Insights

Ambulatory diastolic blood pressure (BP) predicts coronary artery calcification (CAC) in asymptomatic adults. Diastolic BP, not systolic BP, is a key factor in early atherosclerotic coronary artery disease development.

Area of Science:

  • Cardiology
  • Preventive Medicine
  • Medical Imaging

Background:

  • Coronary artery calcification (CAC) is an early marker of atherosclerotic cardiovascular disease.
  • Ambulatory blood pressure (BP) monitoring offers a comprehensive assessment of BP variability.
  • Investigating the link between ambulatory BP and subclinical atherosclerosis is crucial for early disease detection.

Purpose of the Study:

  • To examine the association between ambulatory BP monitoring and CAC in asymptomatic adults.
  • To determine if ambulatory BP measures predict the presence of CAC.
  • To identify specific BP parameters influencing early coronary artery disease development.

Main Methods:

  • 298 asymptomatic adults aged 20-60 years were enrolled.
  • Office and 24-hour ambulatory BP monitoring were performed.
  • Logistic regression analyzed the relationship between ambulatory BP and CAC detected by electron beam computed tomography (EBCT).

Main Results:

  • Ambulatory diastolic BP during both active and inactive periods significantly predicted CAC, independent of age, sex, and office BP.
  • Ambulatory diastolic BP also predicted CAC after adjusting for ambulatory systolic BP.
  • Ambulatory systolic BP, pulse pressure, and diurnal dipping patterns did not significantly predict CAC.

Conclusions:

  • Diastolic blood pressure, particularly when measured via ambulatory monitoring, is a significant predictor of early coronary artery calcification.
  • Hemodynamic stress from diastolic BP may play a critical role in the initiation of atherosclerotic coronary artery disease.
  • Findings highlight the importance of diastolic BP in assessing cardiovascular risk in asymptomatic individuals.
Abstract

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