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Coronary computed tomography angiography-adapted Leaman score as a tool to noninvasively quantify total coronary atherosclerotic burden

The International Journal of Cardiovascular Imaging volume 29, pages 1575–1584 (2013)Cite this article

Abstract

To describe a coronary computed tomography angiography (CCTA)-adapted Leaman score (CT-LeSc) as a tool to quantify total coronary atherosclerotic burden with information regarding localization, type of plaque and degree of stenosis and to identify clinical predictors of a high coronary atherosclerotic burden as assessed by the CT-LeSc. Single center prospective registry including a total of 772 consecutive patients undergoing CCTA (Dual-source CT) from April 2011 to March 2012. For the purpose of this study, 581 stable patients referred for suspected coronary artery disease (CAD) without previous myocardial infarction or revascularization procedures were included. Pre-test CAD probability was determined using both the Diamond–Forrester extended CAD consortium method (DF-CAD consortium model) and the Morise score. Cardiovascular risk was assessed with the HeartScore. The cut-off for the 3rd tercile (CT-LeSc ≥8.3) was used to define a population with a high coronary atherosclerotic burden. The median CT-LeSc in this population (n = 581, 8,136 coronary segments evaluated; mean age 57.6 ± 11.1; 55.8 % males; 14.6 % with diabetes) was 2.2 (IQR 0–6.8). In patients with CAD (n = 341), the median CT-LeSc was 5.8 (IQR 3.2–9.6). Among patients with nonobstructive CAD, most were classified in the lowest terciles (T1, 43.0 %; T2, 36.1 %), but 20.9 % were in the highest tercile (T3). The majority of the patients with obstructive CAD were classified in T3 (78.2 %), but 21.8 % had a CT-LeSc in lower terciles (T1 or T2). The independent predictors of a high CT-LeSc were: Male sex (OR 1.73; 95 % CI 1.04–2.90) diabetes (OR 2.91; 95 % CI 1.61–5.23), hypertension (OR 2.54; 95 % CI 1.40–4.63), Morise score ≥16 (OR 1.97; 95 % CI 1.06–3.67) and HeartScore ≥5 (OR 2.42; 95 % CI 1.41–4.14). We described a cardiac CT adapted Leaman score as a tool to quantify total (obstructive and nonobstructive) coronary atherosclerotic burden, reflecting the comprehensive information about localization, degree of stenosis and type of plaque provided by CCTA. Male sex, hypertension, diabetes, a HeartScore ≥5 % and a Morise score ≥16 were associated with a high coronary atherosclerotic burden, as assessed by the CT-LeSc. About one fifth of the patients with nonobstructive CAD had a CT-LeSc in the highest tercile, and this could potentially lead to a reclassification of the risk profile of this subset of patients identified by CCTA, once the prognostic value of the CT-LeSc is validated.

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Authors and Affiliations

  1. Cardiology Department, Centro Hospitalar Lisboa Ocidental, Lisbon, Portugal

    Pedro de Araújo Gonçalves, Helder Dores, Maria Salomé Carvalho, Pedro Jerónimo Sousa, Antonio Ferreira, Rui Campante Teles, Luís Raposo, Henrique Mesquita Gabriel, Manuel Sousa Almeida, Ana Aleixo & Miguel Mendes

  2. Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands

    Hector M. Garcia-Garcia

  3. Hospital da Luz, Lisbon, Portugal

    Pedro de Araújo Gonçalves, Hugo Marques, Antonio Ferreira, Nuno Cardim & Francisco Pereira Machado

  4. CEDOC, Chronic Diseases Research Center, FCM-NOVA, Lisbon, Portugal

    Pedro de Araújo Gonçalves, Ana Aleixo & Miguel Mota Carmo

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  1. Pedro de Araújo Gonçalves
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  2. Hector M. Garcia-Garcia
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Correspondence to Pedro de Araújo Gonçalves.

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de Araújo Gonçalves, P., Garcia-Garcia, H.M., Dores, H. et al. Coronary computed tomography angiography-adapted Leaman score as a tool to noninvasively quantify total coronary atherosclerotic burden. Int J Cardiovasc Imaging 29, 1575–1584 (2013). https://doi.org/10.1007/s10554-013-0232-8

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