Aortic Valve Area Calculator
This calculator helps healthcare professionals and caregivers determine how many solid medication tablets to administer based on the prescribed dose and the available dosage strength. It’s especially useful in clinical and pharmacy settings where accurate medication dosing is crucial for patient safety.
Aortic Valve Area
Aortic Valve Area Formula (Continuity Equation)
CSA (LVOT cross-sectional area): $$CSA = 0.785 \times (LVOT\ Diameter)^2$$
Stroke Volume (SV): $$SV = 0.785 \times (LVOT\ Diameter)^2 \times LVOT\ VTI$$
Where:
- LVOT Diameter in cm
- VTI values in cm
- AVA result is in cm²
The Aortic Valve Area Calculator is primarily used in echocardiography to assess the severity of aortic stenosis. It applies the continuity equation, assuming flow through the LVOT equals flow through the aortic valve. Inputs include the LVOT diameter, LVOT VTI, and aortic valve VTI. The calculator first determines the LVOT cross-sectional area (CSA), then computes the stroke volume (SV), and finally derives the AVA by dividing SV by the aortic valve VTI. This tool assists in quantifying stenosis severity for appropriate treatment planning.