An atrial septal defect is a congenital heart issue. According to the Centers for Disease Control and Prevention (CDC), it develops in about 1 in 1,859 babies in the United States. An atrial septal ...
Acyanotic heart disease is a type of congenital heart defect that causes abnormal blood flow. It can range from mild to severe. Babies with the condition can seem out of breath and fatigued.