What is pulmonary stenosis? Pulmonary stenosis is a congenital (present at birth) defect that occurs due to abnormal development of the fetal heart during the first 8 weeks of pregnancy. The pulm →

Tetralogy of Fallot (TOF) is a cardiac anomaly that refers to a combination of four related heart defects that commonly occur together. The four defects are: Ventricular septal defect (VSD) Over →

What is an atrial septal defect? Anatomy of the heart, normal 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 →

Heart disease is difficult enough when it strikes adults, but it can be especially tragic in children. There are many different types of heart problems that can affect children. They include congeni →