Device closure of an atrial septal defect following successful balloon valvuloplasty in a neonate with critical pulmonary valve stenosis and persistent cyanosis

Persistent cyanosis after successful balloon valvuloplasty for neonatal cri tical pulmonary valve stenosis is often related to poor right ventricular c ompliance and right-to-left shunting at the atrial level. A successful cath eter closure of an atrial septal defect was performed with a dramatic incre ase in systemic oxygen saturation alleviating the need for a surgical syste mic-to-pulmonary artery shunt.