Atrial Septal Defect

Causes

When the heart forms, partitions (septa) between the heart chambers take shape. Atrial septal defects occur when the partition does not close completely completely, leaving an opening in the atrial septum.

As with most birth defects, the cause is usually unknown. Most atrial septal defects occur by chance, with no clear reason for their development. Some congenital heart defects may have a genetic link, causing heart problems to occur more often in certain families.

Symptoms of ASD in Children

In many children, atrial septal defects cause no symptoms. Or symptoms may not show up until middle age or later. If symptoms are present, they may include:

• fatigue
• sweating
• rapid breathing
• difficulty breathing
• shortness of breath
• tiring easily when playing
• poor growth
• frequent respiratory infections

The symptoms of an atrial septal defect may resemble other conditions or medical problems. Consult a physician for evaluation.