Assessment of aortic regurgitant severity
from pulsed Doppler recording of abdominal aorta flow.
Top: Subcostal image showing the Doppler sample volumme (arrw) positioned
in the abdominal aorta. Systolic flow is oriented toward the transducer.
AA, abdminal aorta.
Bottom: Pulsed Doppl velocity curve shows anterograde systolic flow
above the baseline and retrograde flow that lasts through out diastole
(open arrow). This indicates severe regurgitation.