Heart Septal Defects, Atrial


Atrial Septal Defect

Atrial Septal Defects

Defect, Atrial Septal

Defects, Atrial Septal

Ostium Primum, Persistent

Ostium Secundum Atrial Septal Defect

Persistent Ostium Primum

Primum, Persistent Ostium

Septal Defect, Atrial

Septal Defects, Atrial

Developmental abnormalities in any portion of the ATRIAL SEPTUM resulting in abnormal communications between the two upper chambers of the heart. Classification of atrial septal defects is based on location of the communication and types of incomplete fusion of atrial septa with the ENDOCARDIAL CUSHIONS in the fetal heart. They include ostium primum, ostium secundum, sinus venosus, and coronary sinus defects.