There are 3 measurements required to calculate the aortic valve area
a. Aortic jet velocity using CW doppler VTIAV
b. LVOT diameter to calculate LVOT cross-sectional area (CSALVOT)
c. LVOT velocity with PW doppler (VTILVOT)
The aortic valve area (AVA) = (CSALVOT x VTILVOT) / VTIAV
a. Aortic jet velocity using CW doppler VTIAV
b. LVOT diameter to calculate LVOT cross-sectional area (CSALVOT)
c. LVOT velocity with PW doppler (VTILVOT)
The aortic valve area (AVA) = (CSALVOT x VTILVOT) / VTIAV
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