Non-Invasive Assessment of Vascular Impedance using Cardiac Magnetic Resonance Imaging and Applanation Tonometry to Better Estimate the Severity of Aortic Valve Stenosis

Background: The left ventricle (LV) faces a double afterload in patients with aortic stenosis (AS) – a valvular load due to the AS, and an arterial load as a consequence of reduced arterial compliance. Simultaneous high-fidelity radial artery tonometry (AT) and cardiac magnetic resonance imaging (CMR) may help to provide a more comprehensive assessment of aortic flow velocity, pressure and vasc ular impedance (Zc) than transthoracic echocardiogram (TTE) or left heart catheterisation alone.

Source: Heart, Lung and Circulation - June 23, 2019 Category: Cardiology Authors: S. Hungerford, & A. Adiji, N. Bart, L. Lin, M. Namasivayam, A. Jabbour, M. O ’Rourke, C. Hayward, D. Muller Tags: 295 Source Type: research