Coronary Artery Occlusion as a Complication of Transcatheter Aortic Valve Implantation

摘要

Transcatheter aortic valve implantation (TAVI) has now been accepted as the treatment of choice for symptomatic native aortic valve stenosis in patients who cannot undergo conventional open heart aortic valve replacement. The use of the transcatheter valve procedure has been increasing dramatically in Europe for the treatment of symptomatic aortic stenosis patients since it was approved for commercial use in 2007-2008. Although the transcatheter procedure is technically simpler and less invasive then conventional aortic valve replacement, it is still associated with considerable intraoperative and 30-day complications. The SAPIEN Aortic Bioprosthesis European Outcome (SOURCE) Registry showed 5.5% major intraoperative complications, including conversion to conventional aortic valve replacement, significant paravalvular leak (> 2), valve embolization, and coronary artery obstruction, and 20.8% 30-day major complications, including stroke, acute renal failure requiring dialysis, pacemaker implantation, and major vascular complication.