Morphologic Characteristics and Relating Factors to the Need of Technical Modification in Transcatheter Closure of Large Atrial Septal Defect (≥25 mm)

摘要: Background and Objectives: The rigid coupling between the delivery wire right atrial disk has been occasionally encountered during transcatheter closure of septal defect (ASD). Therefore device frequently makes a perpendicular angle, leading edge left slips through prolapses into atrium (RA) before it is properly placed in septum. purpose this study to investigate relating factors need technical modification large ASD evaluate relevant morphologic characteristics rim situation. Subjects Methods: From July, 2003 May, 2007, 312 patients underwent occlusion with Amplatzer Septal Occluder ® (ASO, AGA medical corporation, Golden Valley, MN, USA) at Yonsei Cardiovascular Center among them 109 had (≥25 mm) these were enrolled our study. Patients divided two groups according deploying methods (Group I: standard method, Group II: modified methods). Assessments defects its surrounding rims made by echocardiography. Results: There no differences 2 age, body weight height except for balloon-stretched diameter (stop-flow technique) size. II showed larger size than group I method. mean length anterosuperior (AS) was significantly shorter (p<0.05). As used procedure increased, there trend towards increase methods. Conclusion: This shows that AS deficiency may be ASD. Therefore, when initial try method not successful deficient rim, we suggest changing strategy implantation save time efforts possibly reduce risk complications associated prolonged procedure. (Korean Circ J 2010;40:191-196)