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Cardiovascular risk scores and the presence of subclinical coronary artery atherosclerosis in women with systemic lupus erythematosus

Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA

A Oeser

Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA

I Avalos

Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA

P Raggi

Department of Medicine, Section of Cardiology, Emory University School of Medicine, Atlanta, CA, USA

C M Stein

Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA, Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, USA, michael.stein{at}vanderbilt.edu

The Framingham risk score is widely used to identify patients at increased cardiovascular risk, and women with systemic lupus erythematosus (SLE) have a marked increased prevalence of cardiovascular events. Thus, we examined the hypothesis that cardiovascular risk scores would identify women with SLE who had asymptomatic coronary atherosclerosis. Ninety-three women with SLE and 65 control subjects were studied. The Framingham score and a score for younger populations developed from the Pathobiological Determinants of Atherosclerosis in Youth (PDAY) study were compared in both groups. Coronary atherosclerosis was ascertained by electron beam computed tomography. There were no significant differences in the median (interquartile range) Framingham [5 (2-10) compared to 7 (0-10), P = 0.88] and PDAY [15 (14-18) compared to 16 (13-18), P = 0.99] scores in patients with SLE and controls, respectively. Coronary atherosclerosis was associated with higher Framingham [12 (3-15) compared to 4 (1-8), P = 0.008] and PDAY [17 (15-19 compared to 15 (12-18), P = 0.03)] scores in patients with SLE; however, 99% of patients were classified as low-risk with a 10-year predicted risk of 1% (<1-3%). Our data indicate that cardiovascular risk scores are not adequate for risk stratification in women with SLE. Measurement of coronary calcification may add information to identify asymptomatic women with lupus who might benefit from aggressive preventive measures.

Key Words: cardiovascular risk scores • EBCT • Framingham • systemic lupus erythematosus

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