Prognostic Value of Coronary Computed Tomography Imaging in Patients at High Risk Without Symptoms of Coronary Artery Disease.

Abstract

At present, traditional risk factors are used to guide cardiovascular management of asymptomatic subjects. Intensified surveillance may be warranted in those identified as high risk of developing cardiovascular disease (CVD). This study aims to determine the prognostic value of coronary computed tomography (CT) angiography (CCTA) next to the coronary artery calcium score (CACS) in patients at high CVD risk without symptoms suspect for coronary artery disease (CAD). A total of 665 patients at high risk (mean age 56 ± 9 years, 417 men), having at least one important CVD risk factor (diabetes mellitus, familial hypercholesterolemia, peripheral artery disease, or severe hypertension) or a calculated European systematic coronary risk evaluation of >10% were included from outpatient clinics at 2 academic centers. Follow-up was performed for the occurrence of adverse events including all-cause mortality, nonfatal myocardial infarction, unstable angina, or coronary revascularization. During a median follow-up of 3.0 (interquartile range 1.3 to 4.1) years, adverse events occurred in 40 subjects (6.0%). By multivariate analysis, adjusted for age, gender, and CACS, obstructive CAD on CCTA (≥50% luminal stenosis) was a significant predictor of adverse events (hazard ratio 5.9 [CI 1.3 to 26.1]). Addition of CCTA to age, gender, plus CACS, increased the C statistic from 0.81 to 0.84 and resulted in a total net reclassification index of 0.19 (p <0.01). In conclusion, CCTA has incremental prognostic value and risk reclassification benefit beyond CACS in patients without CAD symptoms but with high risk of developing CVD.

• Authors: Admir Dedic, Gert-Jan R Ten Kate, Cornelis J Roos, Lisan A Neefjes, Michiel A de Graaf, Angela Spronk, Victoria Delgado, Jeanine E Roeters van Lennep, Adriaan Moelker, Mohamed Ouhlous, Arthur J H A Scholte, Eric Boersma, Eric J G Sijbrands, Koen Nieman, Jeroen J Bax, Pim J de Feijter
• Journal: The American journal of cardiology (Am J Cardiol) Vol. 117 Issue 5 Pg. 768-74 (Mar 01 2016) ISSN: 1879-1913 [Electronic] United States
• PMID: 26754124 (Publication Type: Journal Article, Multicenter Study, Observational Study, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2016 Elsevier Inc. All rights reserved.

Topics

• Aged
• Coronary Angiography (methods)
• Coronary Artery Disease (diagnostic imaging, mortality)
• Coronary Vessels (diagnostic imaging)
• Female
• Follow-Up Studies
• Humans
• Male
• Middle Aged
• Netherlands (epidemiology)
• Predictive Value of Tests
• Prognosis
• Prospective Studies
• Retrospective Studies
• Risk Assessment
• Risk Factors
• Survival Rate (trends)
• Tomography, X-Ray Computed (methods)