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Echocardiographic measurements from one representative patient. The figure shows: (A) measurement of LVOT diameter at aortic valve cusps through parasternal long-axis view (indicated by a yellow arrow) and (B) measurement of velocity-time integral using apical 5 chamber view (indicated as FVIA in our sonographer). RV, Right Ventricle; LV, Left Ventricle; LA, Left Atrium; LVOT, Left Ventricular Outflow Tract; FVIA, Flow Velocity Integral (aorta).
