The document discusses the assessment of aortic regurgitation (AR) severity using various metrics such as jet diameter and depth. It details the hemodynamic changes and pressure equalization rates in the left ventricle and aorta based on AR severity. It also includes formulas for calculating regurgitant and forward stroke volumes.

4. LA
NCC
LCC
RCC
RV
Plane of
Sinus of Side View
Valsalva
Annulus
Free Edge
Aorta Commissure
Coaptation Frontal View
Leaflet Surface
Nodule of Sino-
Arantus Tubular
LV Side View Junction

13. Severity AR Jet/LVOT Diameter
Mild < 25%
Mod 25-50%
Severe > 50%
Severity AR Depth
Mild < 2 cm below AV
Mod 2 cm below AL of MV
Severe Jet to Pap Ms

16. Decel Slope measured by CWD from DTG view
Rate at which the LV and Aortic pressure equalizes
Is a function of the severity of AR

17. Time (sec)
Velocity m/sec
A
E
VTILVI
Forward SV = CSALVI x VTILVI
LV
Time (sec)
Velocity m/sec
VTILVOT (cm)
Total SV = CSALVOT x VTILVOT
CSA(cm2) = 0.785 x D2
Regurgitant SV = Total SV – Forward SV
RF = Regurgitant SV – Total SV

20. α
45 cm/sec
r
RJ
RV = 2 π r2 * Va * α /180
Va = 45 cm/sec
ROarea = RV / VTI RJ

22. Aortic Leaflet
Separation
Aortic Arch Lack of
Dilation Coaptation
Aortic
Regurgitation