title: Dysfunction of an atrial septal defect occluder 8 years after implantation.
abstract: Catheter interventional treatment of atrial septal defect (ASD) is widely accepted. The ASD occluder system (ASDOS) is no longer a widely used device nowadays. However, it is implanted in a substantial number of patients. We report a case of severe left-to-right shunt 8 years after catheter interventional closure of an ASD with an ASDOS device. The shunt was due to a membrane perforation, while the arms of the device were not dislocated. Microscopy, microbiology, and histology could not establish a proper explanation for the dysfunction; so long-term follow-up investigation may be required in patients with an implanted ASDOS device.
authors.affiliation: Klinik III für Innere Medizin, Universität zu Köln, Cologne, Germany.
authors.forename: Henrik
authors.initials: H
authors.lastname: Ten Freyhaus
authors.forename: Stephan
authors.initials: S
authors.lastname: Rosenkranz
authors.forename: Michael
authors.initials: M
authors.lastname: Südkamp
authors.forename: Hans-Wilhelm
authors.initials: HW
authors.lastname: Höpp
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D017548:Echocardiography, Transesophageal; D006344:Heart Septal Defects, Atrial / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology; D019736:Prostheses and Implants; D011475:Prosthesis Failure; D019919:Prosthesis Implantation / Q000009:adverse effects* / Q000295:instrumentation; D011859:Radiography