Wall shear stress and pressure patterns in aortic stenosis patients with and without aortic dilation captured by high-performance image-based computational fluid dynamics
Fig 13
Peak flow velocity magnitude (left) and z−component of the velocity field (right) for the TAVI0 case at stenosis (bottom), restored and unstressed (middle) and restored and stressed (top) cases.
Even though the flow is less chaotic after restoration in the ascending aorta, the descending aortic flow marks a major instability (a separation bubble) which is linked to elevated wall shear stress in that location (see Fig 11). This bubble could be due to the major out-of-plane bending of the aorta.