Snapshot A neonatal boy is born without any complications to a 23-year-old mother who did not receive consistent prenatal care. The boy did very well in the first few hours of life, earning APGAR scores of 8 and 9. After 6 hours, however, he began having trouble feeding. He was tachypneic especially when feeding or when crying. His mom noticed that his lower extremities also appeared bluer than his upper extremities. An echocardiogram is scheduled immediately. Introduction Clinical definition login to view 5 more bullets Etiology Pathogenesis login to view 7 more bullets Associated conditions login to view 3 more bullets Epidemiology Demographics login to view 2 more bullets Location login to view 1 more bullet Risk factors login to view 1 more bullet Presentation Symptoms login to view 5 more bullets Physical exam login to view 13 more bullets Imaging Radiography login to view 9 more bullets Echocardiography login to view 5 more bullets Studies Electrocardiogram login to view 2 more bullets Differential Tetralogy of Fallot login to view 2 more bullets Diagnosis Making the diagnosis login to view 1 more bullet Treatment Medical login to view 8 more bullets Operative login to view 7 more bullets Complications Heart failure Systemic hypertension Berry aneurysms leading to cerebral hemorrhage Aortic rupture Endocarditis Prognosis Some may present early in life, but others may remain asymptomatic until adulthood