An atrial septal defect is a congenital heart defect that is often treatable with medications but it will also depend on the severity of the case. 

What is ASD?

A wall called the septum divides the left and right sides of the heart. ASD is a gap or defect in the septum, which separates the top two chambers of the heart.

Due to this defect, blood that is oxygen-rich can leak into the heart's blood chambers that are oxygen-poor. 

Cardiologists frequently recommend surgery to treat a medium- to a large-sized atrial septal defect found in childhood or adulthood in order to avoid further complications.

There are currently no known treatments for ASD. The signs and symptoms of an atrial septal defect can be lessened with medication, but the defect cannot be repaired. Large ASDs measuring 8 to 10 mm frequently require surgery because they do not close naturally. When a child reaches the age of 3-5 years, ASD defects are to be closed surgically.