1. What is Aortic Valve Severity?

Aortic valve severity is classified based on the aortic valve area (AVA) measurement, which helps determine the degree of aortic stenosis and guide treatment decisions.

2. How Does the Calculator Work?

The calculator uses the following classification:

3. Importance of AVA Measurement

Details: Accurate AVA measurement is crucial for diagnosing aortic stenosis severity, determining need for intervention, and monitoring disease progression.

4. Using the Calculator

Tips: Enter the aortic valve area in cm² as measured by echocardiography. The value must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: What other factors determine aortic stenosis severity?
A: While AVA is important, peak velocity, mean gradient, and velocity ratio are also considered in comprehensive assessment.

Q2: How is AVA typically measured?
A: AVA is most commonly measured by echocardiography using the continuity equation, though cardiac catheterization can also be used.

Q3: What are symptoms of severe aortic stenosis?
A: Symptoms include angina, syncope, and heart failure symptoms like dyspnea on exertion.

Q4: When is intervention recommended?
A: AVR is typically recommended for severe aortic stenosis with symptoms or reduced LV function.

Q5: Does body size affect AVA interpretation?
A: Yes, AVA may be indexed to body surface area (AVA index) in smaller or larger individuals.