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Understanding your child's condition is an important step on your treatment journey. Learn more about causes, symptoms and diagnosis for a variety of conditions, as well as unique treatments and research being performed at Children's National.
An atrial septal defect is an opening in the atrial septum, or dividing wall between the two upper chambers of the heart, known as the right and left atria. Learn more about this condition.
Atrioventricular canal defect (AV canal) is a congenital defect in which certain areas of the heart do not form properly. Learn more about this condition.
Aortic stenosis is a heart defect that causes problems with the aortic valve that make it harder for the leaflets to open and permit blood to flow forward from the left ventricle to the aorta. Learn more about this condition.
Hypoplastic left heart syndrome (HLHS) is a combination of several abnormalities of the heart and great blood vessels. Learn more about this condition.
Patent ductus arteriosus is a heart problem characterized by the persistence of a normal prenatal connection between the aorta and the pulmonary artery. Learn more about this condition.
Pulmonary atresia means that there is an abnormal development of the pulmonary valve. Learn more about this condition.
Pulmonary stenosis is a congenital defect that occurs due to abnormal development of the prenatal heart during the first eight weeks of pregnancy. Learn more about this condition.
Single ventricle anomalies are rare congenital heart defects in which one of the ventricles (or chambers) of the heart does not develop properly, or when the heart can’t be separated into two chambers. Learn how the Fontan procedure can be performed to help your child receive better oxygenation and exercise capacity.
Tetralogy of Fallot (TOF or TET) is a condition of several related congenital defects of the prenatal heart during the first eight weeks of pregnancy. Learn more about this condition.
Total anomalous pulmonary venous return is a congenital heart defect in which the vessels that bring oxygen-rich (red) blood back to the heart from the lungs are improperly connected.