Differentiation of severe coronary artery calcification in the Multi-Ethnic Study of Atherosclerosis

Megan Coylewright, Kenneth Rice, Matthew J. Budoff, Roger S. Blumenthal, Philip Greenland, Richard Kronmal, R. Graham Barr, Gregory L. Burke, Russell Tracy, Wendy S. Post

Research output: Contribution to journalArticle

Abstract

Background: Coronary artery calcium (CAC) scores predict coronary heart disease (CHD) risk. Little is known, however, about the distinctive risk among asymptomatic individuals with very high CAC (≥1000) compared to high CAC (400-999). Methods and results: We compared CHD risk factors and event rates between participants with very high CAC (n= 257) and high CAC (n= 420) among adults free of clinical CHD in the Multi-Ethnic Study of Atherosclerosis (MESA). CAC was measured at baseline, and participants were followed for a median of 68 months. Very high CAC (≥1000), compared to high CAC (400-999), was associated with male gender (OR 3.10, p< 0.001) and older age (OR 1.42 per 10 year increase, p< 0.001). Chronic kidney disease (CKD) was associated with very high CAC (OR 1.66, p= 0.009) with a greater prevalence of moderate CKD (GFR 30-59) in the ≥1000 group (25% vs. 18%). Those with very high CAC were more likely to develop angina (adjusted HR 1.72 [95% CI 1.03-2.90], p= 0.04), but not more likely to experience myocardial infarction, resuscitated cardiac arrest, or CHD death (adjusted HR 1.17, [95% CI 0.64-2.12] p= 0.61) compared to high CAC. Total CHD event rates were greater for very high CAC (3.7 per 100 person-years) compared to high CAC (2.6 per 100 person-years). Conclusions: Both high and very high CAC are associated with an elevated risk of CHD events in those without symptomatic CHD at baseline; however, very high CAC is associated with an increased risk of angina, but not CHD death or MI, compared to high CAC.

Original languageEnglish (US)
Pages (from-to)616-622
Number of pages7
JournalAtherosclerosis
Volume219
Issue number2
DOIs
StatePublished - Dec 1 2011

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Keywords

  • Atherosclerosis
  • Epidemiology
  • Imaging

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Coylewright, M., Rice, K., Budoff, M. J., Blumenthal, R. S., Greenland, P., Kronmal, R., Barr, R. G., Burke, G. L., Tracy, R., & Post, W. S. (2011). Differentiation of severe coronary artery calcification in the Multi-Ethnic Study of Atherosclerosis. Atherosclerosis, 219(2), 616-622. https://doi.org/10.1016/j.atherosclerosis.2011.08.038