At issue is whether a heart-plug procedure to repair a birth defect that is common in about a quarter of the U.S. population can prevent strokes in young people.

WSJ: Doctors Debate Whether Strokes Be Prevented With a Heart-Plug Procedure

If a baby with tricuspid atresia doesn't have an atrial septal defect, the baby may need a procedure to create this opening.

CNN: Tricuspid atresia