ⓘ Ostium primum atrial septal defect

                                     

ⓘ Ostium primum atrial septal defect

The ostium primum atrial septal defect is a defect in the atrial septum at the level of the tricuspid and mitral valves. This is sometimes known as an endocardial cushion defect because it often involves the endocardial cushion, which is the portion of the heart where the atrial septum meets the ventricular septum and the mitral valve meets the tricuspid valve.

Endocardial cushion defects associated with the pathology of the atrioventricular valves, the mitral valve and the tricuspid valve. These include the cleft mitral valve, and single atrioventricular valve single large, deformed valve that flows into the right ventricle and the left ventricle.

Endocardial cushion defects are the most common congenital heart defect associated with down syndrome.

                                     
  • endocardial cushion can lead to an ostium primum atrial septal defect This is the second most common type of atrial septal defect and is commonly seen in Down
  • primum to fuse with the endocardial cushion can lead to an ostium primum atrial septal defect This is the second most common type of atrial septal defect
  • ISBN 0 - 683 - 40007 - X Diagram of Ostium Secundum Atrial Septal Defect at Mayo Clinic ostium primum atrial septal defect GPnotebook. Diagram Animation
  • defect in the ostium primum is occasionally classified as an atrial septal defect but it is more commonly classified as an atrioventricular septal defect
  • foramen ovale. An ostium secundum that persists at large size can be a source of atrial septal defects Foramen secundum atrial septal defects are the most
  • Atrioventricular septal defect AVSD or atrioventricular canal defect AVCD also known as common atrioventricular canal CAVC or endocardial cushion defect ECD