Basic Echo Classification Of Aortic Regurgitation

The highlighted parameters are the more specific ones. 



Doppler parameter
Mild aortic 
regurgitation
Severe aortic 
regurgitation
Pressure half time
> 500 ms
< 250 ms
Vena contracta
< 0.3 cm
> 0.6 cm
Jet width/LVOT
< 25%
> 65%
Regurgitant orifice area
< 0.1 cm2
=/> 0.3 cm2
Aortic flow reversal
Early diastolic or none
Holodiastolic
Regurgitant volume
< 30 mL/beat
=/> 60 mL/beat

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