Close to 100% In expirienced hands, surgery for avsd has close to no mortality.
It is not known. The cause of avsd is not known. There are known associations, most notably trisomy 21 or down syndrome. Nearly half of the children with avsd have trisomy 21.
Not clear. While avsd is seen associated with trisomy 21 most defects occur spontaneously with no clear cause.
No cause. Unless there is trisomy 21 there is no cause for avsd's. Nothing that we know of. You have done nothing wrong during pregnancy.
Development defect. The way the heart forms depends on an intricate movements and cell signaling sometimes it just doesn't go right. Also common in infants with down syndrome.
Unknown. The heart is a very complex organ. We still do not fully understand how the normal heart develops in the fetus. We understand even less about what causes the heart to develop abnormally. There are multiple genetic and environmental factors involved. But rest assured, nothing you did caused this heart defect and nothing you could have done would have prevented it.