Description: Module 4 covers subaortic stenosis, beginning with the spectral analysis of a mid-cavity obstruction and including differentiating between spectral tracings of mitral regurgitation, subaortic stenosis, mid-cavity obstruction (with EKG timing), and the aortic valve. Case presentations include technical tips, overview of techniques for provocative maneuvers, and review of diagnostic criteria. Viewing Time: 35 minutes Customized Review: 30 minutes Click here for eCourse viewing FAQs (including Viewing Time) CME: CME is no longer available for this course.