اغلاق الفتحة بين الازينيتن
![](https://drjegaden.com/wp-content/themes/jegaden/assets/images/homehero.jpg)
An atrial septal defect (ASD) is a hole in the atrial septum, which is the muscular wall that separates the heart’s two upper chambers (atria). An ASD is a defect you are born with (congenital defect) that happens when the septum does not form properly.