Asymmetric VSD closure device

Asymmetric VSD closure device Complete heart block is an important risk of device closure of perimembranous veentricular septal defect (VSD). This is because of pressure from the device damaging the atrioventricular (AV) conduction system. An asymmetric VSD closure device is found to decrease the chance of complete heart block. Amplatzer asymmetric ventricular septal defect occluder is the one which is used often (AAVSDO) [Pinto RJ et al. Transcatheter closure of perimembranous ventricular septal defects using amplatzer asymmetric ventricular septal defect occluder: preliminary experience with 18-month follow up. Catheter Cardiovasc Interv. 2006;68:145-52]. The left ventricular disc is typically 5 millimeters towards the left ventricular apex while it is only 0.5 millimeters towards the aorta. The connecting waist is 1.5 millimeters long and the right ventricular disc is 4 millimeters larger than the waist. The asymmetric VSD closure device is made of nitinol mesh covered with dacron fabric and the final occlusion of the defect is by thrombus formation in the mesh [Thanopoulos BD et al. Transcatheter closure of perimembranous ventricular septal defects with the Amplatzer asymmetric ventricular septal defect occluder: preliminary experience in children. Heart. 2003; 89: 918–922]. Potential complications of device closure of VSD These include device migration, pericardial effusion, embolic episodes, delayed onset of conduction disturbances or even infective endocarditis....
Source: Cardiophile MD - Category: Cardiology Authors: Tags: General Cardiology AAVSDO Amplatzer asymmetric ventricular septal defect occluder Asymmetric ventricular septal defect closure device Asymmetric VSD closure device atrioventricular conduction system AV conduction system perimembranous ventri Source Type: blogs