Transcatheter patch correction of secundum atrial septal defects.

The efficacy and safety of the transcatheter patch (TP) correction of a secundum atrial septal defect (ASD) was studied acutely and on short-term follow-up in 20 patients, successfully implanted with the device. TPs are made of polyurethane foam and require temporary balloon catheter immobilization on the atrial septum for 48 hours. Eighteen patients were not suitable for disk-device repair.