Abstract

MOREYRA¹, Camila et al. Asociación entre fibrilación auricular y tejido adiposo epicárdico evaluado con resonancia magnética cardíaca. Insuf. card. [online]. 2018, vol.13, n.1, pp.18-23. ISSN 1852-3862.

Association between atrial fibrillation and epicardial adipose tissue evaluated with cardiac magnetic resonance Background. Atrial fibrillation (AF) is the most frequent arrhythmia. Several studies suggest that it could be associated with the amount of epicardial adipose tissue (EAT). Most have used computed tomography, but cardiac magnetic resonance imaging (cMRI) is considered the gold standard for measuring visceral adipose tissue. Objectives. To assess whether there is an association between the thickness of EAT measured with cMRI and the prevalence of AF. Materials and methods. Retrospective and descriptive study. RMNc performed at the Sanatorium Allende were evaluated from 2015 to 2017. TAE was defined as the adipose tissue between the surface of the myocardium and the epicardium. Measurements were made in the short axis and long axis view evaluating 11 segments, analyzing the impact of both these individual measurements and the sum of them. Results. 121 patients were evaluated. The mean age was 48 ± 18 years and 71% was male. AF was confirmed in 11 patients (9%). The average EAT was 94 mm. In the group without AF the average was 92 mm versus 114 mm in the group with AF (P=0.12). In the AF group, the EAT was significantly higher in the lateral segments of the left ventricle (LV) and in the atrio-ventricular groove (3.9 ± 1.7 vs 5.8 ± 2.8 mm, p<0.03 and 12.9 ± 3.9 vs 16.9 ± 5, p<0.01). The ROC curves for these measurements were 0.69 (sensitivity 58%, specificity 18%) and 0.72 (81% and 45%, respectively). Conclusions. The average total EAT was 94 mm. A relationship between total EAT and AF was not demonstrated. The lateral segment of the LV and the left atrioventricular groove were statistically significant.

Keywords : Atrial fibrillation; Epicardial adipose tissue; Cardiac nuclear magnetic resonance.

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