Delayed embolization of Amplatzer septal occluder device: an unknown entity--a case report.

A case of delayed embolization of Amplatzer septal occluder, occurring at 2 weeks postimplantation in a 10-year-old girl with an oval-shaped secundum atrial septal defect is reported. The structurally intact device dislodged into the left atrium owing to reversal of transatrial pressure gradients and embolized to the left ventricular outflow tract from where it was retrieved surgically.