DEGREE OF AORTIC STENOSIS BY PIC VELOCITY OF THE STENOTIC FLOW
Flow velocity beyond the narrowed aortic valve is studied on spectral Doppler in CW mode. The best position for the evaluation is the Apical 5 Chamber view. The flow should be as much parallel to the ultrasound beam as possible.
In the case of severe stenosis, the shape of the flow is more rounded. Mild stenosis is characterized by a peak at the beginning of systole; the flow is more triangular on the spectrogram. A late peak is characteristic of subaortic dynamic stenosis
Assessment of Aortic Stenosis by Pic Velocity:
Mild - 2.6-2.9 m/c
Moderate 3.0-4.0 m/s
Severe > 4 m/s
Apical 5 Chamber View. CW Doppler. Measurement of the Pic Velosity of the systolic flow and Mean pressure gradient. Aortic Stenosis. Simulation by Echocardiography Online Simulator MyEchocardiography.com