Question

In severe aortic stenosis, what are the parameters indicating severity on echocardiography?

a. Peak velocity, mean gradient, aortic valve area
b. Left ventricular ejection fraction, end-diastolic volume, stroke volume
c. Pulmonary artery pressure, right ventricular size, tricuspid regurgitation
d. Aortic root diameter, ascending aorta size, left atrial size

Answer 1

The parameters indicating severity of severe aortic stenosis on echocardiography are peak velocity, mean gradient, and aortic valve area.

Step-by-step explanation:

On echocardiography, the parameters that indicate severity of severe aortic stenosis are:

• Peak velocity: This measures the maximum velocity of blood flow across the aortic valve. Higher peak velocity signifies a more severe stenosis.
• Mean gradient: This measures the average pressure difference between the left ventricle and the aorta during systole. Higher mean gradient indicates a more severe stenosis.
• Aortic valve area: This measures the cross-sectional area of the aortic valve opening. A smaller valve area indicates a more severe stenosis.

Therefore, option 'a' - Peak velocity, mean gradient, and aortic valve area - is the correct answer.