Echocardiography III Exam 1 Practice 2026 - Free Echocardiography Practice Questions and Study Guide

Post-stenotic dilation is the typical pattern seen with aortic stenosis. The narrowed valve creates a high-velocity jet that travels into the ascending aorta and impinges on the wall distal to the stenosis. This jet increases shear stress and turbulence in the segment immediately downstream, promoting remodeling and dilation of the aorta beyond the narrowed valve. Dilation before the stenosis isn’t usually driven by the valve lesion, diffuse dilation implies a systemic or connective-tissue process, and no dilation would not fit with the hemodynamic impact of the stenosis.