Sinus venosus atrial septal defect

A sinus venosus atrial septal defect is a type of atrial septal defect primarily associated with the sinus venosus.

Sinus venosus atrial septal defect
ASD locations. (1: upper sinus venosus defect; 2: lower sinus venosus defect.)
Specialty	Cardiac surgery

They represent 5% of atrial septal defects.^[1]

They can occur near the superior vena cava or inferior vena cava, but the former are more common.^[2]

They can be associated with anomalous pulmonary venous connection.^[3]