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Aortic  Regurgitation
Aortic  Regurgitation
Aortic  Regurgitation
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
Aortic  Regurgitation
Aortic  Regurgitation
Aortic  Regurgitation
Aortic  Regurgitation
Aortic  Regurgitation
Aortic  Regurgitation
Aortic  Regurgitation
Aortic  Regurgitation
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
Aortic  Regurgitation
Aortic  Regurgitation
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
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
Aortic  Regurgitation
Aortic  Regurgitation
α	

      45 cm/sec

          r



              RJ




RV = 2 π r2 * Va * α /180
                            Va = 45 cm/sec
ROarea = RV / VTI RJ
Aortic  Regurgitation
Aortic Leaflet
              Separation



Aortic Arch                    Lack of
Dilation                       Coaptation


               Aortic
               Regurgitation
Aortic  Regurgitation
Aortic  Regurgitation
Aortic  Regurgitation

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Aortic Regurgitation

  • 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 Ï€ r2 * Va * α /180 Va = 45 cm/sec ROarea = RV / VTI RJ
  • 22. Aortic Leaflet Separation Aortic Arch Lack of Dilation Coaptation Aortic Regurgitation