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Figure 1: Late peaking right outflow tract pressure gradient of 16 mm Hg (a), which increased to 45 mm Hg with limited exercise (b). The right ventricular obstruction in 2D echocardiography with color flow Doppler in the parasternal short-axis view of transthoracic echocardiography (c). RVOT; Right ventricular outflow tract, PA; Pulmonary artery, PG; Peak gradient

Figure 1: Late peaking right outflow tract pressure gradient of 16 mm Hg (a), which increased to 45 mm Hg with limited exercise (b). The right ventricular obstruction in 2D echocardiography with color flow Doppler in the parasternal short-axis view of transthoracic echocardiography (c). RVOT; Right ventricular outflow tract, PA; Pulmonary artery, PG; Peak gradient