(A) A transthoracic echocardiogram after birth reveals a severely stenotic pulmonary valve with 3 dysplastic and thickened leaflets with a peak pressure gradient of 86 mmHg across the pulmonary valve. (B) Postoperative echocardiography shows a pressure gradient of 17 mmHg across the neoaortic valve, with an improved neoaortic valve regurgitation. neoAo: neoaorta; neoAV: neoaortic valve; PA: pulmonary artery; PV: pulmonary valve ; RV: right ventricle.