How to Catch a Newborn Murmur

Atrial septal defects, even when they're large tend to be relatively asymptomatic the ASD is just don't cause a whole lot in the way of symptoms. The degree of shunting through a VSD almost always is is more than the shunted through a V SD of similar size. While you get pulmonary over circulation in an ASD, when that blood comes back to the left atrium,. It has a nice big pop off valve to be able to go right over to the right side of the heart again so you never build up those very high left atrial pressures which can lead to congestive heart failure.