The transaortic pressure gradient can assess the severity of aortic stenosis, the pressure gradient between the aorta and the left ventricle during systole.

The mean systolic pressure gradient is more consistent with cardiac catheterization data than the peak pressure gradient.
The mean gradient is calculated by averaging the pressure gradient over the entire ejection period. Calculators are embedded in echocardiographs; the operator will only trace the spectrogram.

Assessment of Aortic Stenosis by Mean Pressure Gradient:

 

• Mild  < 20 mmHg
• Moderate 20-40  mmHg
• Severe > 40 mmHg

 

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

 

 

 

 

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