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

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The International Journal of Cardiovascular Imaging

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01-10-2013 | Original Paper

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

Authors: Pedro de Araújo Gonçalves, Hector M. Garcia-Garcia, Helder Dores, Maria Salomé Carvalho, Pedro Jerónimo Sousa, Hugo Marques, Antonio Ferreira, Nuno Cardim, Rui Campante Teles, Luís Raposo, Henrique Mesquita Gabriel, Manuel Sousa Almeida, Ana Aleixo, Miguel Mota Carmo, Francisco Pereira Machado, Miguel Mendes

Published in: The International Journal of Cardiovascular Imaging | Issue 7/2013

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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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Title: Coronary computed tomography angiography-adapted Leaman score as a tool to noninvasively quantify total coronary atherosclerotic burden
Authors: Pedro de Araújo Gonçalves
Hector M. Garcia-Garcia
Helder Dores
Maria Salomé Carvalho
Pedro Jerónimo Sousa
Hugo Marques
Antonio Ferreira
Nuno Cardim
Rui Campante Teles
Luís Raposo
Henrique Mesquita Gabriel
Manuel Sousa Almeida
Ana Aleixo
Miguel Mota Carmo
Francisco Pereira Machado
Miguel Mendes
Publication date: 01-10-2013
Publisher: Springer Netherlands
Published in: The International Journal of Cardiovascular Imaging / Issue 7/2013
Print ISSN: 1569-5794
Electronic ISSN: 1875-8312
DOI: https://doi.org/10.1007/s10554-013-0232-8

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