Aortic valve area

Aortic Stenosis Microchapters
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Aortic Valve Area
Aortic Valve Area Calculation
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Percutaneous Aortic Balloon Valvotomy (PABV) or Aortic Valvuloplasty
Transcatheter Aortic Valve Replacement (TAVR) TAVR vs SAVR Critical Pathway Patient Selection Imaging Evaluation Valve Types TAVR Procedure Post TAVR management AHA/ACC Guideline Recommendations
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Lakshmi Gopalakrishnan, M.B.B.S. [2]

Overview

The severity of aortic stenosis can be assessed by estimating both the pressure gradient across the valve and the surface area of the valve. The latter can be calculated using echocardiographic flow velocities and the trans-valvular pressure gradient can be calculated using the following equation:

Pressure Gradient = 4 x (velocity of blood through the valve)² mmHg

References

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