Flow, Reflected by Stroke Volume Index, Is a Risk Marker in High-Gradient Aortic Stenosis Patients Undergoing Transcatheter Aortic Valve Replacement

Background Tools are needed to identify patients at increased risk after transcatheter aortic valve replacement (TAVR). Indexed stroke volume (SVi) is an echocardiographic measurement that is used for low-gradient aortic stenosis. We studied whether low SVi is a high-risk marker in patients with high-gradient aortic stenosis (HG-AS) and assessed the relationship between SVi and left ventricle (LV) systolic function in contributing to this risk....