Hemodynamics: HOCM, aortic stenosis, valve area equations, pitfalls of guidelines cutoffs for AS +MS

0:00 LV-aortic pressure gradient tracings: HOCM vs AS, and HOCM features
03:37 Features of AS
12:27: Features of HOCM, HOCM cases, Brockenbrough, spontaneous gradient changes
29:12 AS case. Pitfalls, including technical issues
34:39 Valve area equations for AS and MS (Gorlin, Hakki)
40:40 Consequence of Gorlin equation: gradient dependency on flow
41:47 Misalignment of valve area and gradient cutoffs in both AS and MS
43:28 Marked lability of MS gradient and its poor prediction of MS severity
49:54 Assessment of vaalve stenosis in AF
54:00 End-hole vs side-hole catheter in HOCM and in AS.
LVOT acceleration and pressure gradient in AS