Endocardial cushion defect
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Synonyms and keywords: Atrioventricular septal defect; atrioventricular canal defect; AV septal defects; canalis atrioventricularis communis; persistent atrioventricular ostium; abnormal development of endocardial cushions
Overview
Endocardial cushion defects are often called atrioventricular canal or septal defects. This is not a single defect but a variety of defects that involve the atrial septum, one or both of the atrioventricular valves, or the ventricular septum.
Classification
There are two broad classes of defect:
- Partial defects: There is atrial septal involvement, but there are separate mitral and tricuspid valve orifices.
- Complete defects: There is the presence of both atrial and ventricular septal defects and there is a common AV valve.
Acknowledgements
The content on this page was first contributed by: C. Michael Gibson, M.S., M.D.