URMC / Encyclopedia / Collection Heart Defects Atrial Septal Defect (ASD) in Children Ventricular Septal Defect (VSD) Atrioventricular (AV) Canal Defect in Children Tricuspid Atresia Pulmonary Atresia Transposition of the Great Arteries (TGA) in Children Tetralogy of Fallot (TOF) Coarctation of the Aorta (COA) in Children Aortic Stenosis in Children Pulmonary Stenosis in Children Patent Ductus Arteriosus (PDA)