Bicuspid Aortic Valve

— v—---—-- v—'i

———HAX

Fig. 3. Calcific ("senile") degeneration of aortic valve showing "echo-bright" reflection (arrows).

Fig. 3. Calcific ("senile") degeneration of aortic valve showing "echo-bright" reflection (arrows).

Therefore, the 2D characteristics of the aortic valve can provide important clues to the etiology of aortic stenosis (Table 1).

doppler assessment

Doppler measurements across the aortic valve are essential to the determination of the severity of aortic stenosis. As the aortic valve narrows, the velocity of blood flow across the valve will generally increase. This velocity is dependent on the pressure gradient across the valve. Continuous-wave (CW) Doppler measurements across the aortic valve should be performed where the ultrasound beam is most parallel to the flow of blood across the valve. Therefore, measurements are best

Bicuspid Aortic Valve

Bicuspid aortic valve variants

(PLAX views)

Fig. 4. Sketch showing bicuspid aortic valve variants with different commissural orientations (parasternal short-axis views [PLAX]).

A Diastole

Leaflets **

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