ABC | Volume 110, Nº5, May 2018

Clinicoradiological Correlation Atik et al Natural evolution of corrected transposition of great arteries Arq Bras Cardiol. 2018; 110(5):487-489 Figure 1 – Electrocardiogram showing conduction abnormality in the left branch the, biatrial overload and T-wave orientation towards the left ventricle at right. Chest X-ray showing cardiomegaly with enlarged ventricle and left atrium. Four-chamber echocardiographic view showing enlarged right ventricle at left and deviation of the interventricular septum at right and enlarged left atrium. Figure 2 – Computed tomography angiography of coronary arteries showing the right and left anterior ventricular branch originating from the anterior sinus of Valsalva (B). Larger arteries, composed by the circumflex, posterior ventricular and marginal arteries, arise from the posterior sinus of Valsalva that perfuses the entire right ventricle at left (A and C). literature and recognized as a consequence of right ventricular dysfunction, and the main long‑term sequela of this condition. Decreased coronary flow after vasodilation with adenosine, resulting in altered vasoreactivity and possible microcirculation was previously reported, 4 which may explain the ventricular dysfunction. Therefore, the best option for these patients may be atrial and arterial anatomic repair by double switch operation in some stage of the disease. 1,2 488