<unk>  stenosis (TS) staging sections into categories A, B, C, D. Stages C (without symptoms) and D (with symptoms). When valve and/or chordal thickening and calcification are evident, there are additional findings indicative of severe TS, for example, pressure gradient greater than or equal to 5 mm Hg, pressure half-time greater than or equal to 190 milliseconds, valve area less than or equal to 1.0 cm^2, associated moderate right atrial enlargement, and inferior vena cava dilatation.
Tricuspid stenosis classification
Aortic stenosis classification
Tricuspid regurgitation classification
Pulmonic regurgitation classification
Left ventricular aneurysm classification
Mitral regurgitation classification
Aortic insufficiency classification of severity
Atrial septal defect classification