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Echocardiography at 18 months after the first presentation. (A) The normalized left ventricular internal diameter during diastole (LVIDDN) is 2.18 from the right parasternal short-axis view. (B) 2D left atrial–aortic ratio (LA: AO) is 3.17 from the right parasternal short axis view. (C) Tricuspid valve regurgitation velocity is 4.69 m/s from the left apical four-chamber view. (D) Transmitral valve E velocity is 1.72 m/s from the left apical four-chamber view
