The aortic valve (AV) is a semilunar valve of the heart. The area of the aortic valve (AVA) is used for measuring the severity of the Aortic stenosis (AS). Measurements that are taken during echocardiography is used for the calculation of the AVA. Find the stroke volume (SV), cross sectional (CSA) and AVA by entering the left ventricular outflow tract (LVOT), velocity time integral (VTI).
If the Aortic valve area is less than 1 centimeter square, then the risk for the aortic stenosis disorder is high.
If LVOT is 1, LVOT (VTI) is 2 cm and aortic valve VTI is 3 cm
CSA = 0.785 x 1 = 0.785 cm2
SV = 0.785 * 12 * 2 = 1.570 cc
Aortic Valve Area = 12 * 0.78540 * 2/3 = 0.52 cm2
Hence, the risk for Aortic Stenosis is Severe.
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