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Figure 1: Asymmetric septal hypertrophy and right ventricular wall hypertrophy are illustrated in the parasternal long-axis view of transthoracic echocardiography (a). Patent ductus arteriosus in the aortic arch is illustrated in the modified upper esophageal short-axis view of transesophageal echocardiography with a left-to-right shunt (b) and a right-to-left shunt (c) in color Doppler study and pulsed-wave Doppler study (d)

Figure 1:  Asymmetric septal hypertrophy and right ventricular wall hypertrophy are illustrated in the parasternal long-axis view of transthoracic echocardiography (a). Patent ductus arteriosus in the aortic arch is illustrated in the modified upper esophageal short-axis view of transesophageal echocardiography with a left-to-right shunt (b) and a right-to-left shunt (c) in color Doppler study and pulsed-wave Doppler study (d)