Atrial Septal Defect

We locally follow infants with an inter-atrial shunt ≥4 mm size. Otherwise, we consider the shunt a patent foramen ovale (depending also on its anatomy and presence of flap). See some examples of the patent foramen ovale in the subcostal section.

Ostium secundum ASD, left to right.

Silvestry, Frank E., et al. "Guidelines for the echocardiographic assessment of atrial septal defect and patent foramen ovale: from the American Society of Echocardiography and Society for Cardiac Angiography and Interventions." Journal of the American Society of Echocardiography 28.8 (2015): 910-958.