| Sinus venosus atrial septal defect | |
|---|---|
 | |
| ASD locations. (1: upper sinus venosus defect; 2: lower sinus venosus defect.) | |
| Specialty | Cardiac surgery |
A sinus venosus atrial septal defect is a type of atrial septal defect primarily associated with the sinus venosus.
They represent 5% of atrial septal defects.
They can occur near the superior vena cava or inferior vena cava, but the former are more common.
They can be associated with anomalous pulmonary venous connection.