Clinical implications of Inter atrial septal aneurysm
Posted Oct 25 2010 10:21am
This is a relatively common abnormality of IAS. It is often observed as IAS bulging into left or right atrium in routine echocardiogram.If this happens without atrial hypertension it is termed as IAS aneurysm .
This is due to valve of foramen ovale bending into the LA/RA* cavity for various distance. By definition , the radius of curvature of the bulge should be more than 10 mm to label it as IAS aneurysm.
Mostly a benign entity.
More often observed in association with ostium secundum ASD.
The septal bulge can be static or dynamic . It could swing into LA, RA, and back to LA or vice versa.