Different value of coronary calcium score to predict obstructive coronary artery disease in patients with and without moderate chronic kidney disease |
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Authors: | K. H. Yiu F. R. de Graaf J. E. van Velzen N. A. Marsan C. J. Roos M. K. de Bie H. F. Tse E. E. van der Wall M. J. Schalij J. J. Bax J. D. Schuijf J. W. Jukema |
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Affiliation: | 1. Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, the Netherlands 2. The Interuniversity Cardiology Institute of the Netherlands, Utrecht, the Netherlands 3. Cardiology Division, Department of Medicine, University of Hong Kong, Hong Kong, People’s Republic of China
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Abstract: | Purpose The coronary calcium score (CCS) predicts significant coronary artery disease (CAD) in the general population. While moderate chronic kidney disease (CKD) is associated with high CCS, the use of CCS to predict significant CAD in these patients is unknown. Methods A total of 704 patients underwent computed tomography coronary angiography for the assessment of CCS and CAD. Sixty-nine (10 %) patients had moderate CKD, defined by an estimated glomerular filtration rate (eGFR) between 30 and 59 mL/min/1.73m2, and the remaining patients were considered to be without significant CKD (eGFR?≥?60 mL/min/1.73m2). Results Patients with moderate CKD were older, had a higher CCS, and a higher prevalence of obstructive CAD than patients without significant CKD. Receiver-operator curve analysis showed that CCS predicted the presence of obstructive CAD in both patients with moderate CKD and those without significant CKD. In patients with moderate CKD, the optimal cut-off value of CCS to diagnose obstructive CAD was 140 (sensitivity 73 % and specificity of 70 %), and is 2.8 fold higher than in patients without significant CKD (cut-off value?=?50; sensitivity 75 % and specificity 75 %). Conclusion The present results demonstrate that CCS can predict obstructive CAD in patients with moderate CKD, although the optimal cut-off value is higher than in patients without significant CKD. |
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